Top Software Testing Companies in Sofia

Ratings Updated: June 19, 2026

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Featured

What are Featured Providers?
Simform

4.8 85 reviews
Premier Verified

$25,000+

$25 - $49 / hr

1,000 - 9,999

Serves Sofia, Bulgaria

Services provided

20% AI Development

20% Cloud Consulting & SI

10% CRM Consulting and SI +5 services

10% Custom Software Development

10% E-Commerce Development

10% ERP Consulting and SI

10% Enterprise App Modernization

10% Mobile App Development

Simform provides comprehensive software development and application testing services, consistently praised for their expertise and commitment to client success. Notably, 100% of reviewers highlight their exceptional project management and timely delivery. With a strong focus on application quality assurance, Simform excels in adapting to client needs and fostering seamless communication, making them a highly reliable partner in software QA testing and development.

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3 of 3 reviews are 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 3 times in the past 6 months
Recent client feedback highlights Simform's strong project management, responsiveness, and commitment to long-term solutions. Clients noted timely delivery and effective communication, with one stating Simform's team displayed a 'strong sense of independence and synergy.' Another client appreciated their attention to detail and willingness to understand operational needs. While documentation was identified as an area for improvement, overall sentiment remains positive, with clients describing Simform as a strategic partner rather than just a vendor.
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12 of 13 Application Testing reviews are 5 stars

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Development & QA Support for Lifestyle Membership Platform
5.0 — Simform provides ongoing development and QA support for a lifestyle membership platform. The team has helped develop services, automated the client's regression testing, and set up automated class Read more
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Industry Experience

Simform has garnered positive feedback across various industries, demonstrating expertise in Education, Hospitality, IT, and Business Services. Clients commend their project management, responsiveness, and ability to deliver high-quality software solutions within budget and on schedule. Particularly notable is their adaptability in complex projects, fostering a collaborative environment. Overall, their strengths lie in technical proficiency and effective communication, making them a suitable partner for clients in Education, Hospitality, IT, Business, and Real Estate sectors.
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Utilities Financial services eCommerce Real estate Healthcare Logistics & Supply Chain Wellness & Fitness Agriculture Human Resources Media Other industries Consulting Nonprofit Construction Legal Arts, entertainment & music Gaming Food & Beverages Other Industry Consumer Products Fitness Software Business services Information technology Hospitality & leisure Education Advertising & marketing IT Services

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United States (50) Canada (6) England (4) Germany (4) United Arab Emirates (2) Switzerland (2) Netherlands (1) Norway (1) Singapore (1) Sweden (1) Israel (1) Ireland (1) Hungary (1) Finland (1)

This provider is fluent in 1 language:

English

This provider is available in 4 time zones:

Central Standard Time (CST)

Eastern Standard Time (EST)

Pacific Standard Time (PST)

Mountain Standard Time (MST)

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QA Wolf

4.9 62 reviews
Premier Verified

$5,000+

Undisclosed

50 - 249

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QA Wolf is an application testing company specializing in automated regression and end-to-end testing services, ensuring enhanced software quality assurance. The company is praised for its responsiveness, adaptability, and seamless integration within development workflows. Approximately 90% of reviewers highlight their exceptional project management and timely delivery, while 70% commend their ability to operate as an embedded partner rather than a mere vendor.

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2 of 4 reviews are 5 stars

3 new reviews for Application Testing services

$50,000 – $199,999 avg. project cost

Reviewed 4 times in the past 6 months
In the last six months, QA Wolf has received overwhelmingly positive feedback from clients, highlighting their responsiveness and integration into teams. Clients noted the swift identification of bugs, with one report mentioning 33 pre-existing issues uncovered. Their project management was praised for timely deliverables and effective communication, often feeling like an embedded part of the client's team. Areas for improvement were minimal, primarily concerning initial alignment on workflows. Overall, clients expressed high satisfaction with QA Wolf's value and performance.
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44 of 58 Application Testing reviews are 5 stars

4 new reviews for Application Testing in past 6 months

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Application Testing for Financial Services Company
5.0 — QA Wolf is providing application testing services to a financial services company. The team defines and builds out the testing environment as well as runs and oversees the validation Read more
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Industry Experience

QA Wolf has demonstrated strong expertise in various industries, notably Insurance, Telecommunications, Financial Services, and Education. Clients praised their ability to automate testing processes, resulting in significant reductions in bugs and improved release confidence. The Insurance industry feedback highlighted successful end-to-end testing, while Telecommunications clients noted enhanced automated test coverage. Overall sentiment reflects satisfaction across sectors, emphasizing QA Wolf's responsiveness and value, making them a suitable partner for organizations seeking reliable QA solutions.
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Other industries Gambling Manufacturing Arts, entertainment & music Automotive Advertising & marketing Education Healthcare Media Consulting eCommerce Information technology Logistics & Supply Chain Agriculture Software Telecommunications Financial services Engineering Insurance

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QualityLogic

4.9 32 reviews
Premier Verified

$5,000+

$25 - $49 / hr

50 - 249

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QualityLogic is a professional services company specializing in App Testing, QA Testing, and Software Testing. Across numerous reviews, 100% of clients praised their communication and project management skills, and 90% noted their technical expertise and professionalism. A recurrent theme is their alignment with clients' values and budget, with many highlighting their flexible and dedicated approach to Software Quality Assurance.

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1 of 1 reviews is 5 stars

$50,000 – $199,999 avg. project cost

Reviewed 1 time in the past 6 months
Recent client feedback highlights QualityLogic's effective support in achieving ADA compliance for digital assets. The Whatcom County Government praised the team's consistency in meeting deadlines and their ability to communicate the importance of accessibility practices. Clients noted substantial progress in compliance and integration of these practices across departments, though some training sessions could have been better scripted. Overall, sentiment remains positive, with an emphasis on their value for cost and alignment with client values.
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Industry Experience

QualityLogic has demonstrated expertise across diverse industries, including Government, Healthcare, Education, Information Technology, and Advertising. Clients commend their effective ADA compliance solutions and thorough testing methodologies that enhance digital accessibility in Government and Education sectors. In Healthcare, their functional testing significantly improved product launches. Overall sentiment reflects strong satisfaction in QualityLogic's thoroughness, communication, and adaptability, making them a solid choice for organizations in need of quality assurance and accessibility compliance.
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Software Healthcare Advertising & marketing Information technology Legal Education Other Industry Arts, entertainment & music Consulting Transportation IT Services Financial services Media Government Business services

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More responsive than most other service providers

QualityLogic is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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View projects from:

United States (26) Canada (1) Singapore (1) Spain (1)

This provider is fluent in 1 language:

English

This provider is available in 3 time zones:

Central Standard Time (CST)

Pacific Standard Time (PST)

Mountain Standard Time (MST)

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Cleverix - Software Engineering

5.0 7 reviews

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Premier Verified

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

40% Application Testing

30% Mobile App Development

15% UX/UI Design +1 service

15% Web Development

Cleverix - Software Engineering is a specialized software testing company, offering comprehensive services like App Testing, QA Testing, and Software Quality Assurance. Across reviews, 100% of clients praised their technical expertise, responsiveness, and ability to integrate into teams seamlessly. Clients noted significant improvements in product quality, testing coverage, and release velocity, with no reported areas for improvement.

See all 7 projects
6 of 6 Application Testing reviews are 5 stars

3 new reviews for Application Testing in past 6 months

$10,000 – $49,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

Application Testing for Academic Research Sharing Website
5.0 — Cleverix - Software Engineering tested an academic research sharing website's functionality. The team provided a detailed report with recommendations. Read more
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Average Project Cost Breakdown

$50,000 to $199,999 (4) $10,000 to $49,000 (2)

What Clients Have Said
Clients consistently commend Cleverix for their competitive pricing and excellent value for money. One client noted that their pricing fit the budget while providing great cultural alignment and value for cost. Another highlighted their ability to deliver high-quality services on time, often exceeding expectations. Overall, sentiment is overwhelmingly positive, with clients expressing satisfaction with the cost-effectiveness of their engagements and the quality of deliverables received.
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United States (3) Bulgaria (2) England (1)

This provider is fluent in 3 languages:

Bulgarian

English

German

This provider is available in 3 time zones:

Greenwich Mean Time (GMT)

Eastern European Time (EET)

Eastern Standard Time (EST)

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$2,000 Essential QA $5,000 Enhanced QA $8,000

QA Managed Service
Cleverix’s QAaaS model delivers end-to-end QA services tailored to your needs. Our ISTQB-certified QA engineers match your technical requirements, handling sprint-based testing to complex automation. Prices are indicative and may vary. A customized offer will be provided following the free discovery phase to align with your specific needs.
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Scalefocus

4.9 38 reviews
Premier Verified

$1,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

20% AI Development +3 services

20% Mobile App Development

15% Web Development

10% IT Managed Services

Scalefocus is a software development and digital transformation company specializing in custom solutions, cloud services, and DevOps. Their reviews indicate high client satisfaction, with commendations for their technical expertise and seamless integration into client teams. Approximately 90% of feedback highlights their strong project management and adaptability to evolving needs, while 80% emphasize their effective communication and cultural fit. Scalefocus consistently delivers projects on time, with a focus on innovation and client-centric solutions.

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Reviews mention Detail-oriented
Clients consistently praised ScaleFocus for their detail-oriented approach, highlighting their ability to identify and adapt to specific needs. One client noted their 'brilliant support and attention to detail' as key to exceeding expectations. Another emphasized ScaleFocus's 'meticulousness' and 'diligence,' which were crucial in overcoming potential hurdles during project development. Overall, the sentiment regarding their attention to detail is overwhelmingly positive, contributing significantly to client satisfaction and project success.

Managed IT Services for Creative Design Company

5.0 Sep 16, 2019

I would have to say that, what impressed me most was how well ScaleFocus were able to identify our and our customers’ exact needs and adapt their approach according to them. Their brilliant support and attention to detail are an excellent ad-on to Arqino’s services. Our expectations were exceeded, by their determination to go the extra-mile in terms of delivery and customer engagement.
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Custom ERP & Web Portal for Delivery Company

5.0 Jul 8, 2019

In spite of being new in the field, their professionalism and attention to detail were on a premium level. They managed to see all potential hurdles along the line of the development process and act accordingly so that we overcome them efficiently. They also finalized their tasks in a timely, concise and competent manner.
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Ongoing Software Dev for IT Firm

5.0 Sep 16, 2018

ScaleFocus is our go-to partner for trustworthy offshore development. With high quality and strong communication consistent across the entire team, they ensure we meet our goals on time and to the highest standard. Detail-oriented and focused on outcomes, they are always available and ready to help, in spite of the time difference.
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2 of 2 reviews are 5 stars

$200,000 – $999,999 avg. project cost

Reviewed 2 times in the past 6 months
Recent client feedback highlights Scalefocus's exceptional collaboration and technical expertise. Clients praised their ability to deliver complex functionalities and modern UI/UX designs, noting significant improvements in project outcomes and team integration. For instance, one client noted the transformation of their incident ingestion process, while another emphasized the innovative LLM-as-a-Judge evaluation methodology. Overall sentiment reflects high satisfaction with Scalefocus's responsiveness and cultural alignment, with minor initial alignment challenges cited as the only area for improvement.
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More responsive than most other service providers

Scalefocus is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Review Rating from Clients

4.9/5.0

Quality

4.8

Schedule

4.8

Cost

4.7

Willing to Refer

4.8

Clients in Sofia commend Scalefocus for their strong technical skills in web, mobile, and enterprise solutions, including payment integrations, platform development, and data visualization. They emphasize the company's reliable project management, timely delivery, and customer-centric approach across various industries.
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Featured

What are Featured Providers?

BetterQA

4.9 64 reviews
Premier Verified

$5,000+

Undisclosed

50 - 249

Serves Sofia, Bulgaria

Services provided

80% Application Testing

10% Application Management & Support

10% Other IT Consulting and SI

BetterQA is a specialized software quality assurance company offering comprehensive QA testing services, including app testing, software validation, and application quality assurance. Across diverse industries, reviews highlight their high expertise and strategic integration into client workflows, with 100% of reviews noting their responsiveness and on-time delivery. Clients appreciate their ability to tailor solutions, improve testing processes, and reduce defects, leading to enhanced software quality and efficiency.

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4 of 4 reviews are 5 stars

3 new reviews for Application Testing services

$10,000 – $49,000 avg. project cost

Reviewed 4 times in the past 6 months
In the last six months, client feedback on BetterQA has been predominantly positive. Clients praised their strong QA expertise and tailored approach, noting significant improvements such as a 60% reduction in recruitment process time and a 15% increase in efficiency. Timeliness and responsiveness were highlighted, with one client appreciating the clear communication and structured project management. Overall, clients expressed satisfaction with the value for cost and the collaborative nature of the engagements, with few suggestions for improvement.
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36 of 40 Application Testing reviews are 5 stars

3 new reviews for Application Testing in past 6 months

$10,000 – $49,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

QA/Software Testing for Security/Defense Consultancy
4.5 — BetterQA provided QA and software testing services for a security and defense consultancy. The team created a QA strategy and test cases, automated test scripts, and conducted performance and Read more
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Industry Experience

BetterQA demonstrates robust expertise across various industries, including Construction, Real Estate, Banking, eCommerce, and IT. Clients commend their business consulting, quality assurance, and cybersecurity capabilities, highlighting improved operational efficiencies and reduced bugs as key outcomes. Sentiment is overwhelmingly positive, with notable mentions of their responsiveness and adaptability. Industries such as Financial Services and Media appreciate BetterQA's meticulous testing and tailored solutions, making them a strong candidate for companies seeking quality assurance in complex environments.
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Real estate Construction Human Resources Financial services Media Software Fitness Consulting Food & Beverages Advertising & marketing Chemicals & Biotechnology Retail Logistics & Supply Chain Engineering Wellness & Fitness Healthcare Banks IT Services eCommerce Other Industry Information technology

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$4,500 Startups, Small Teams $7,500 Growing Businesses $9,000 Enterprises, Complex

BetterQA Independent Testing Solutions
Independent testing that tells you what's actually broken, not what you want to hear. We bridge the gap between developers who build it and business teams who sell it. Bottom line: we make sure your releases work so you can sleep at night.
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QAlified

4.9 21 reviews
Verified

Undisclosed

$25 - $49 / hr

10 - 49

Serves Sofia, Bulgaria

Services provided

100% Application Testing

QAlified is a Software Quality Assurance company specializing in comprehensive testing services, including App Testing, QA Testing, and Software Validation. They are consistently recognized for exceptional project management, timely delivery, and thorough bug reporting. Across numerous client reviews, 100% commend their dedication to quality and responsiveness, with notable appreciation for their flexibility and seamless integration into client workflows.

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1 of 1 reviews is 5 stars

1 new review for Application Testing services

Unknown avg. project cost

Reviewed 1 time in the past 6 months
Recent client feedback highlights QAlified's exceptional project management and adaptability, with timely deliverables and clear communication. Clients noted improved site stability and reduced production issues, attributing this success to QAlified's thorough testing and structured defect reporting. Their transparency and cultural alignment were praised, fostering a collaborative environment. While clients suggested exploring test automation earlier in engagements, overall sentiment remains highly positive, reflecting QAlified's commitment to quality and partnership.
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Industry Experience

QAlified has demonstrated expertise across multiple industries, including healthcare, media, aviation, e-commerce, advertising, manufacturing, education, and government. Feedback highlights their strengths in quality assurance, automated testing, and their ability to adapt to client needs. Overall, clients commend their responsiveness, project management, and thorough testing processes, indicating a strong fit for organizations seeking reliable QA solutions in diverse sectors.
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Information technology IT Services Media Software Advertising & marketing Manufacturing Education Government Retail

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Average Project Cost Breakdown

Less than $10,000 (3) $10,000 to $49,000 (3) $50,000 to $199,999 (3) $200,000 to $999,999 (2) $1,000,000 to $9,999,999 (1)

What Clients Have Said
Clients consistently praise QAlified for offering competitive pricing that aligns with their budgets while providing excellent value for money. Feedback highlights that the company's services not only meet but often exceed expectations, with one client noting, "Good value for cost." Another emphasized their ability to deliver high-quality results on time, reinforcing the sentiment that QAlified is a cost-effective choice for quality assurance services.
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Reactive Hive Ltd

5.0 11 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

100% Application Testing

Reactive Hive Ltd is a company specializing in Application Testing and Software Quality Assurance, with a strong focus on e-commerce platforms like Magento and Adobe Commerce. Across their reviews, 100% of clients commend their efficient integration and thorough QA processes, highlighting their ability to seamlessly slot into existing workflows and rapidly identify and resolve issues. Their communication and expertise are universally praised, driving high client satisfaction and project success.

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4 of 4 reviews are 5 stars

4 new reviews for Application Testing services

Unknown avg. project cost

Reviewed 4 times in the past 6 months
In recent reviews, Reactive Hive Ltd has received overwhelmingly positive feedback for their quality assurance services. Clients noted their seamless integration into existing teams and effective communication. One client praised their thorough testing processes, which led to timely project launches, while another highlighted their deep understanding of e-commerce platforms. Overall, clients appreciated the company's culture fit and efficiency, with no reported areas for improvement.
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$1,337 Fast & focused QA checks $2,337 Deeper, structured testing $4,242 Full coverage & ongoing QA support

Monthly QA Subscription
QA Subscriptions offer monthly testing hours designed to reduce your team’s QA workload and ensure robust coverage when you need it most. No long-term commitment required: choose a package that fits your needs. Scale your existing testing team and bridge capacity gaps with short-term support. Prioritise quality during peak delivery periods.
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1 of 1 Sofia-based review is 5 stars

1 Sofia-based review for Application Testing in past 6 months

Unknown avg. project cost for Application Testing services in Sofia

Application Testing project highlight

E-Commerce Software Testing for Furtniture Marketplace
5.0 — Reactive Hive was hired by a furniture marketplace to support their manual testing efforts. They're tasked with documenting new features, doing automated tests, and assisting in field tech issue Read more
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

In Sofia, Reactive Hive Ltd is valued for their expertise in QA, testing, and bug resolution for digital projects. Reviewers appreciate their quick integration, professionalism, and thorough work, which helps clients achieve smooth project launches and maintain high-quality standards.
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App Streams Ltd

5.0 9 reviews

$25,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

30% Web Development

25% Mobile App Development +3 services

10% AI Development

10% IoT Development

10% UX/UI Design

App Streams Ltd is a software development and application testing company renowned for its expertise in QA Testing, Software Quality Assurance, and App Quality Testing. With positive feedback from 100% of reviewers, they are praised for their rapid response times, deep understanding of client needs, and ability to deliver high-quality, bug-free solutions promptly. Their exceptional project management skills and strong team culture are consistently highlighted.

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3 of 3 reviews are 5 stars

2 new reviews for Application Testing services

$10,000 – $49,000 avg. project cost

Reviewed 3 times in the past 6 months
In the past six months, App Streams Ltd has garnered positive feedback for their responsiveness, timely delivery, and high-quality work. Clients praised their ability to effectively address urgent challenges, such as stabilizing applications and developing user-friendly interfaces. Notable instances include their collaboration with Auxa Health, where they accelerated product launches and improved testing processes, and with Sportal.bg, where they successfully implemented critical updates under tight deadlines. Overall, clients express strong satisfaction and a desire for continued partnership.
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Industry Experience

App Streams Ltd has demonstrated significant expertise across diverse industries, including healthcare, information technology, consumer products, automotive, manufacturing, and media. Clients praised their exceptional project management, timely delivery, and strong collaborative culture. In healthcare, they excelled in developing user-friendly applications for patient care. In IT and consumer products, they provided innovative solutions for gamification and fan engagement. Overall, feedback reflects high satisfaction across all sectors, making them a versatile partner for clients seeking reliable software development support.
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Other industries Information technology Consumer products & services Healthcare Software Manufacturing Automotive Media

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More responsive than most other service providers

App Streams Ltd is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
Get in Touch

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

4.5

Located in Sofia, Bulgaria, App Streams Ltd delivers tailored software solutions, including backend and mobile app development, with a focus on timely delivery and good communication. Reviewers value their professionalism and close collaboration on innovative projects like e-bike management systems.
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Wiser Technology

4.9 42 reviews

$25,000+

$25 - $49 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

70% Custom Software Development

20% IT Managed Services

Wiser Technology is a company specializing in Application Testing and Software Quality Assurance. Feedback highlights their efficient onboarding process and the exceptional skills of their QA testers, making them feel integral to their clients' teams. With 100% positive reviews, clients commend Wiser Technology for their dedication and effective remote collaboration.

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Reviews mention Hard working
Clients consistently highlight the hard-working nature of Wiser Technology's team. One client noted that ITIDO's DevOps engineers felt like integral members of their organization, demonstrating dedication and openness in collaboration. Another client praised their ability to deliver complex solutions within tight timelines, emphasizing the team's commitment to achieving project goals. Overall, feedback reflects a strong sentiment of appreciation for the diligence and work ethic exhibited by Wiser Technology's professionals.

Software Dev Services for IT Company

5.0 Apr 6, 2023

It always seemed and felt that the colleagues from ITIDO are part of our organization. Their DevOps engineers are hard-working, open-minded, and quite friendly to work with. Despite that we are in separate geographic locations, remote collaboration with ITIDO feels like a breeze.
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1 of 2 Application Testing reviews are 5 stars

$50,000 – $199,999 avg. project cost

Application Testing PROJECT HIGHLIGHT

Software Dev Services for IT Company
5.0 — An IT company has partnered with Wiser Technology (formerly ITIDO) for software development services. They are working on а new custom monitoring solution and are tasked with researching and Read more
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Industry Experience

Wiser Technology has garnered positive feedback across various industries, showcasing expertise primarily in IT Services, Telecommunications, Healthcare, and Media. In IT Services, clients praised their innovative solutions and project management. In Telecommunications, they received accolades for responsiveness and integration capabilities. Their work in Healthcare demonstrated adaptability and technical proficiency, while feedback from Media highlighted effective collaboration and user-focused design. Overall, their strengths lie in software development, cloud solutions, and agile project management, making them a suitable partner for clients in these sectors.
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IT Services Research Telecommunications Information technology Sports Real estate Media Healthcare Financial services Software Food & Beverages Nonprofit Business services Education Other Industry Advertising & marketing Agriculture Energy & natural resources

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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

4.9

Cost

4.7

Willing to Refer

5.0

Sofia-based clients praise Wiser Technology for their expertise in web and app development, including MVP launches, IoT platforms, and digital solutions. They highlight effective project management, responsive communication, and high-quality deliverables across diverse, complex projects, reflecting strong technical skills and collaborative teamwork.
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Stanga1

4.8 9 reviews

$5,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

20% Custom Software Development

15% IT Staff Augmentation +5 services

15% Web Development

10% CRM Consulting and SI

10% Cloud Consulting & SI

10% Cybersecurity

10% Mobile App Development

Stanga1 is a leading company specializing in Software Quality Assurance and Development Testing services. Their client reviews highlight a strong commitment to quality, teamwork, and timely delivery, with 100% positive feedback on their communication and problem-solving skills. Notably, 90% of reviewers commend their adaptability and technical expertise in full-stack development and cloud infrastructure.

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Reviews mention Autonomous
Clients have expressed a positive sentiment towards Stanga1's autonomy in project execution. One client noted that the team was able to perform their activities independently, which allowed internal teams to focus on their tasks without interruptions. Their responsiveness and thorough analysis were also highlighted as key strengths. Overall, Stanga1's ability to work without requiring constant oversight was greatly appreciated, indicating a strong level of trust and competence.

Managed IT Services for Tire & Rubber Company

5.0 Mar 24, 2023

Stanga1 delivered everything in a timely manner while making themselves available all the time. Stanga1 people, once they became familiar with the project and the scope of the exercise, they were able to perform all their activities without any need of our interference. This was very appreciated from our internal teams. Their availability and ability to work independently were particularly appreciated by our internal teams, as they were able to focus on their own tasks without interruptions.
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Belgium (1) Bulgaria (1) France (1) Germany (1)

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1 of 1 Sofia-based review is 5 stars

Unknown avg. project cost for Application Testing services in Sofia

Sofia-based Application Testing project highlight

Web & Mobile App Dev for Software Development Company
5.0 — Stanga1 has developed a software development firm's web and mobile apps. They've managed the end-to-end development of the apps, processed and optimized large volumes of data, and built a cloud Read more
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Sofia-based clients praise Stanga1 for their full-stack, mobile, and cloud development expertise, delivering complex transportation platforms with real-time data processing. Their organized project management, responsiveness, and technical breadth ensure successful, scalable solutions tailored to client needs.
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NATEK

5.0 5 reviews

$250,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

20% Application Management & Support

20% DevOps Managed Services +7 services

10% Computer Engineering

10% IT Managed Services

10% IT Staff Augmentation

5% AI Development

5% BI & Big Data Consulting & SI

5% Cloud Consulting & SI

5% Staffing

NATEK is an IT services company specializing in IT staffing, recruitment, and project management solutions. Across multiple reviews, clients highlight NATEK’s speed, flexibility, and effective communication, with 100% of reviewers noting their timely delivery and high-quality recruitment process. The company is praised for its strong cultural alignment and proactive approach to meeting client needs, with no significant areas for improvement mentioned.

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5 of 5 reviews are 5 stars

$200,000 – $999,999 avg. project cost

Reviewed 5 times in the past 6 months
Recent client feedback on NATEK has been overwhelmingly positive, highlighting their effective communication, timely delivery, and strong cultural alignment. Clients from diverse sectors praised NATEK's high competence in IT staffing and project management, with one noting their 'fast recruitment process' and another emphasizing 'exemplary communication.' Overall, clients reported successful project outcomes and expressed satisfaction with NATEK's flexibility and responsiveness, with no significant areas for improvement identified.
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Industry Experience

NATEK has garnered positive feedback across various industries, showcasing strong expertise in Banking, IT, Energy & Natural Resources, and Retail. Clients from the banking sector commend NATEK for its high competence in IT specialists and effective recruitment processes. In IT, NATEK is noted for timely project management and a strong cultural fit. The Energy sector praises their swift delivery in recruitment, while Retail highlights their flexible and goal-oriented approach. Overall, NATEK is highly regarded for its professionalism and adaptability across these sectors.
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Energy & natural resources Information technology Banks Retail

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Sofia, Bulgaria

Sopharma Business Towers Complex, 5 Lachezar Stanchev str.
Sofia, Bulgaria 1797
76 - 100

+359 896 935 690

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Review Rating from Clients

5.0/5.0

Quality

4.5

Schedule

5.0

Cost

4.8

Willing to Refer

5.0

Local clients in Sofia commend NATEK for their organized project management and fast recruitment of IT professionals. They value their professionalism, cultural alignment, and ability to deliver results on time, supporting complex IT projects and staffing needs seamlessly.
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SoCyber

5.0 13 reviews

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

10% Application Management & Support

10% BI & Big Data Consulting & SI +7 services

10% Blockchain

10% Corporate Training & Coaching

10% Cybersecurity

10% Graphic Design

10% Public Relations

10% Social Media Marketing

10% Web Development

SoCyber is a specialized company offering Application Testing and Software Quality Assurance services, particularly in web application and API penetration testing. The reviews are overwhelmingly positive, with 100% of clients highlighting the professionalism and efficiency of their technical team and streamlined communication. Clients commend their ability to deliver quality work on time and within budget, although a post-remediation verification phase could enhance their offerings.

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2 of 2 Application Testing reviews are 5 stars

1 new review for Application Testing in past 6 months

Less than $10,000 avg. project cost

Application Testing PROJECT HIGHLIGHT

Penetration Testing for Video Chat Services Company
5.0 — SoCyber conducted web app and API penetration testing for a video chat services company. They adhered to the OWASP Web Security Testing Guide and other custom frameworks for the tests. Read more
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Industry Experience

SoCyber has demonstrated strong expertise in the information technology, software, consulting, and financial services sectors. Clients consistently praise their professionalism, efficient project management, and the ability to identify and remediate security vulnerabilities effectively. Positive feedback highlights their thorough penetration testing, regulatory compliance support, and strong communication. Overall, SoCyber is well-suited for companies in these industries, particularly those seeking to enhance cybersecurity measures and ensure compliance with industry standards.
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Information technology Software Consulting Financial services IT Services

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Average Project Cost Breakdown

Less than $10,000 (11)

What Clients Have Said
Clients consistently highlight SoCyber's competitive pricing and strong value for money. For instance, a CTO noted that SoCyber's pricing fit their budget while ensuring a good value for the cost. Similarly, another client appreciated the range of service options from basic to complex, allowing for flexibility in expenditures. Overall, sentiment towards SoCyber's cost-effectiveness is positive, with many clients expressing satisfaction with the quality of services received relative to the investment made.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

Sofia-based clients commend SoCyber for their comprehensive security testing, regulatory compliance, and effective communication. Their work spans web, mobile, and infrastructure security, with a focus on high-quality, timely results, and tailored solutions for financial institutions, government agencies, and corporate clients.
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DSS - Digital and Software Solutions

5.0 4 reviews

$10,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

40% IT Staff Augmentation

20% Web Development +4 services

15% Custom Software Development

5% Application Management & Support

5% IT Managed Services

5% Other IT Consulting and SI

DSS - Digital and Software Solutions provides comprehensive services in software development, ServiceNow development, and consulting. The company has received positive feedback for their professional project management, effective automation of processes, and responsive team. Their expertise in App Testing and QA Testing has been highlighted, with clients appreciating the swift response to needs and high project success rates.

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Reviews mention Communicative
Clients have consistently praised DSS - Digital and Software Solutions for their excellent communication and responsiveness. One client noted the 'clear communication and prompt response' throughout the project, highlighting their efficient project management and timely delivery. Another emphasized the company's reliability and ability to address needs promptly, reflecting a strong sentiment of satisfaction regarding communication practices.

Cybersecurity Platform Dev & IT Services for University

5.0 Feb 27, 2024

Project management was excellent, with clear communication and prompt response, efficient resource allocation and strict compliance with the timelines. All items were delivered according to schedule, and all our needs were promptly addressed.
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Industry Experience

DSS - Digital and Software Solutions has demonstrated expertise across several industries, including Banking, Research, and Information Technology. Feedback highlights their strengths in improving customer experiences in banking applications, delivering complex cybersecurity platforms for universities, and providing quality IT support solutions. Overall sentiment is highly positive, reflecting their reliability, flexibility, and strong project management capabilities, making them a suitable partner for clients in these sectors.
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Banks Research Information technology

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Average Project Cost Breakdown

$200,000 to $999,999 (1)

What Clients Have Said
Clients consistently highlight DSS - Digital and Software Solutions for their competitive pricing and strong value for money. One client noted, 'Pricing fits our budget' and 'Good value for cost,' while another echoed similar sentiments, emphasizing their 'great culture fit' and alignment of values. Overall, reviews reflect a positive sentiment regarding cost-effectiveness, with no significant complaints regarding pricing or value, indicating a reliable choice for project partners.
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Review Rating from Clients

5.0/5.0

Quality

5.0

Schedule

5.0

Cost

5.0

Willing to Refer

5.0

In Sofia, DSS is recognized for delivering advanced digital solutions, including mobile banking enhancements, cybersecurity systems, and high-performance hardware. Clients commend their professionalism, prompt responses, and ability to handle diverse, high-stakes projects efficiently.
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MyApp.BG

5.0 1 review

$5,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

80% Mobile App Development

10% Application Management & Support

MyApp.BG is a development company that specializes in designing and creating applications from scratch. The overall feedback is highly positive, with 100% of the reviewers highlighting their responsiveness and client-focused approach. The company is praised for its good pricing and effective project management, though it could benefit from increased local advertising.

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Industry Experience

MyApp.BG has demonstrated expertise in the Other Industry, particularly in application development for health-related platforms. Clients have praised their ability to bring ideas to life, highlighting strengths in project management, responsiveness, and competitive pricing. The overall sentiment is positive, with successful outcomes reported, such as profitable app sales. Potential clients in the health and wellness sector may find them especially suitable for projects requiring custom software development.
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Other Industry

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Average Project Cost Breakdown

What Clients Have Said
Clients express a positive sentiment regarding MyApp.BG's overall cost and value for money. One reviewer noted the company's 'good prices' while highlighting their responsiveness and effective communication. The successful sale of an application developed by MyApp.BG further underscores the perceived value, indicating a strong return on investment. However, some clients suggest that improved advertising could enhance the company's visibility and attract more potential customers.
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Quality House

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

80% Application Testing

20% IT Staff Augmentation

Application Testing company Quality House is in Sofia, Bulgaria and Bucharest, Romania. They provide Application Testing and IT staff augmentation.
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adesso Bulgaria

Not yet reviewed

$25,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

20% Application Testing

30% Custom Software Development

20% Application Management & Support +2 services

20% IT Managed Services

10% Enterprise App Modernization

Adesso Bulgaria is a custom software development company established in 2018. Their services include Custom Software Development and IT managed services.
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DeepSource

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

25% Application Testing

30% Mobile App Development

30% Web Development +1 service

15% Custom Software Development

DeepSource, a mobile app development company, is headquartered in Sofia, Bulgaria. The team specializes in Mobile App Development and Web Development.
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Atom Solutions Ltd.

Not yet reviewed

$5,000+

$25 - $49 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

30% Web Development

20% Web Design +4 services

15% Mobile App Development

10% AR/VR Development

10% UX/UI Design

5% Graphic Design

Atom Solutions Ltd. Is a web development firm founded in 2008. Located in Sofia, Bulgaria and Silkeborg, Denmark, the team focuses on Web Development and Web Design.
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Energize Global Services

Not yet reviewed

$10,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

30% IT Staff Augmentation

19% Custom Software Development +8 services

10% DevOps Managed Services

10% Microservices Architecture Services

10% Web Design

5% Cloud Consulting & SI

3% Staffing

1% AI Development

1% IT Strategy Consulting

1% Recruiting

Energize Global Services is a Yerevan, Armenia-based IT staff augmentation company. They focus on IT staff augmentation and Custom Software Development and were established in 2007.
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Sofia, Bulgaria

European Trade Center, Building D, Floor 6, 115M Tsarigradsko Shosse
Sofia, Bulgaria 1784
151 - 200

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Estafet

Not yet reviewed

$100,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

20% Application Testing

20% AI Development

20% API Development +3 services

20% Microservices Architecture Services

10% Custom Software Development

10% Web Design

Estafet is a midsize custom software development firm. Launched in 2002, the team provides Custom Software Development and Artificial Intelligence.
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Sofia, Bulgaria

Floor 5 Vitosha Business Center 47, Blvd. "Cherni vrah" Blvd, 1407 Sofia, Bulgaria
Sofia, Bulgaria 1407
76 - 100

+447779246741

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1Crew

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

30% Application Testing

30% Cloud Consulting & SI

15% IT Managed Services +2 services

15% IT Strategy Consulting

10% IT Staff Augmentation

1Crew is a cloud consulting & SI company launched in 2013. The team focuses on cloud consulting & SI and Application Testing.
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TINQIN

Not yet reviewed

$50,000+

$50 - $99 / hr

250 - 999

Sofia, Bulgaria

Services provided

10% Application Testing

40% Custom Software Development

15% Business Consulting +5 services

10% Application Management & Support

10% Web Development

5% IT Strategy Consulting

5% UX/UI Design

5% Web Design

In Sofia, Bulgaria, TINQIN is a midsize custom software development firm. Their services include Custom Software Development and Business Consulting.
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Soft2Run

Not yet reviewed

$10,000+

$25 - $49 / hr

10 - 49

Bałsza, Bulgaria

Services provided

15% Application Testing

30% Custom Software Development

20% AI Development +6 services

10% Application Management & Support

5% E-Commerce Development

5% Enterprise App Modernization

5% Mobile App Development

5% Other Application Development

5% Web Development

Soft2Run is a software development company. The team is headquartered in Bałsza, Bulgaria, and their services include Custom Software Development and Artificial Intelligence.
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NCB Ltd

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

20% Application Testing

30% Custom Software Development

30% Web Development +2 services

10% Blockchain

10% IoT Development

Founded in 2013, NCB Ltd is a software development firm. Their team offers Custom Software Development and Web Development.
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Concord Europe

Not yet reviewed

Undisclosed

Undisclosed

50 - 249

Sofia, Bulgaria

Services provided

15% Application Testing

30% Custom Software Development

30% IT Staff Augmentation +3 services

10% BI & Big Data Consulting & SI

10% Other IT Consulting and SI

5% IT Strategy Consulting

Concord Europe is an IT staff augmentation company launched in 2017. The team offers IT staff augmentation and Custom Software Development.
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ENDIGITAL

Not yet reviewed

$25,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

15% Application Testing

15% Custom Software Development

15% E-Commerce Development +4 services

15% IT Staff Augmentation

15% Mobile App Development

15% Web Development

10% IT Managed Services

ENDIGITAL is a custom software development firm launched in 2012. The team offers Custom Software Development and E-Commerce Development and is located in Sofia, Bulgaria and LONDON, England.
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Wildorb Interactive Design Studio

Not yet reviewed

$1,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

10% Branding

10% Custom Software Development +7 services

10% E-Commerce Development

10% Graphic Design

10% IoT Development

10% Mobile App Development

10% UX/UI Design

10% Web Design

10% Web Development

Wildorb Interactive Design Studio, a software development firm, is based in Sofia, Bulgaria. They provide Custom Software Development and UX/UI Design.
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Sourcelab

Not yet reviewed

$5,000+

$25 - $49 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

15% UX/UI Design

15% Web Development +6 services

10% Custom Software Development

10% E-Commerce Development

10% Low/No Code Development

10% Mobile App Development

10% Web Design

5% Application Management & Support

Sourcelab is an UX design agency. They offer UX/UI Design and Web Development and were established in 2019. The company is in Sofia, Bulgaria and Amsterdam, Netherlands.
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More responsive than most other service providers

Sourcelab is very responsive
They are a great candidate to start a conversation with. Send them a short message or project inquiry.
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Roller Gaming Ltd.

Not yet reviewed

$100,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

15% Application Testing

45% Mobile App Development

20% Custom Software Development +1 service

20% Web Development

Roller Gaming Ltd. Is a mobile app development company established in 2021. The firm provides Mobile App Development and Custom Software Development, and is small.
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Devocean Services

5.0 2 reviews

$10,000+

$50 - $99 / hr

50 - 249

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

25% Enterprise App Modernization +3 services

15% Mobile App Development

15% Web Development

10% Application Management & Support

Devocean Services provides comprehensive IT solutions, including application testing, software testing, and app QA, specializing in creating and overhauling platforms for consultancy and IT firms. Their reviews highlight a strong emphasis on professionalism, transparent communication, and timely delivery. Clients commend their entrepreneurial experience, superior project management, and ability to meet client needs efficiently, often exceeding expectations without compromise on budget or timeline.

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VA Software Solutions ltd

Not yet reviewed

$50,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

20% Custom Software Development

20% Enterprise App Modernization +4 services

20% Web Development

10% Application Management & Support

10% BI & Big Data Consulting & SI

10% Robotics Process Automation

Launched in 2019, VA Software Solutions ltd is a custom software development company. Based in Earley, England and Sofia, Bulgaria, the team focuses on Custom Software Development and Web
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Sofia, Bulgaria

bul. Cherni Vrah 47
Sofia, Bulgaria 1407
10 - 15

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SavvyTribe

Not yet reviewed

$25,000+

$50 - $99 / hr

10 - 49

Sofia, Bulgaria

Services provided

10% Application Testing

25% Custom Software Development

25% IT Staff Augmentation +4 services

10% AI Development

10% BI & Big Data Consulting & SI

10% Cloud Consulting & SI

10% Enterprise App Modernization

SavvyTribe is an IT staff augmentation company. Launched in 2022, the agency is in Sofia, Bulgaria and Sofia, Bulgaria. Their services include IT staff augmentation and Custom Software Development.
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Emerging Markets Consulting

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Sofia, Bulgaria

Services provided

25% Application Testing

50% IT Strategy Consulting

25% Business Consulting

Emerging Markets Consulting is a small IT strategy consulting company located in Sofia, Bulgaria. The team provides IT strategy consulting and Application Testing.
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Populosoft

Not yet reviewed

$1,000+

$25 - $49 / hr

2 - 9

Sofia, Bulgaria

Services provided

25% Application Testing

40% Mobile App Development

25% Custom Software Development +1 service

10% Social Media Marketing

In Sofia, Bulgaria, Populosoft is a mobile app development company. Founded in 2025, the team offers Mobile App Development and Custom Software Development.
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Web Publishing House

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

30% Mobile App Development

30% Web Development +2 services

20% IT Strategy Consulting

10% UX/UI Design

Web Publishing House is a mobile application development firm. Their small team is based in Sofia, Bulgaria. Their services include Mobile App Development and Web Development.
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SoftConsultGroup

Not yet reviewed

$10,000+

$50 - $99 / hr

2 - 9

Sofia, Bulgaria

Services provided

10% Application Testing

50% Custom Software Development

20% Mobile App Development +1 service

20% Web Development

SoftConsultGroup is a Sofia, Bulgaria-based software development company. Their services include Custom Software Development and Mobile App Development.
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Top Software Testing Companies in Sofia

List of the Top Sofia QA Testers

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QualityLogic is very responsive

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App Streams Ltd is very responsive

Reviews mention Hard working

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Sourcelab is very responsive

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