Top JavaScript Developers
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Featured
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$5,000+$25 - $49 / hr50 - 249London, EnglandServices provided
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See all 89 projectsDigis, a Fiverr company (NYSE: FVRR), is a web development firm specializing in full-stack and custom website development. Reviews consistently highlight their exceptional project management, technical expertise, and strong communication skills. Approximately 90% of reviewers commend their proactive and reliable service, resulting in improved project delivery times and increased user satisfaction across various web applications.
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$10,000+$25 - $49 / hr50 - 249
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See all 5 projectsAquSag Technologies is a versatile web development company renowned for its expertise in custom website development, web design, and web application development. With over 95% of feedback being positive, clients consistently commend AquSag for its cost-effective solutions, timeliness, and excellent communication. Reviewers frequently highlight the company's technical guidance and ability to align with client values and needs, ensuring seamless project execution and successful outcomes.
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$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
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See all 15 projectsBrainence is a full-stack web development company specializing in custom website development and web application development. Across reviews, 100% of clients express satisfaction with their services, highlighting their professionalism, responsiveness, and ability to deliver sophisticated platforms that exceed expectations. Their effective project management and strong communication skills are frequently praised, with no significant areas for improvement noted.
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$5,000+$25 - $49 / hr50 - 249Surat, India
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See all 4 projectsKNOVATOR TECHNOLOGIES PRIVATE LIMITED is a web development company specializing in custom website development and web application development. They have received highly positive feedback, with clients praising their punctual delivery and effective communication. Impressively, 100% of reviewers mention their ability to meet deadlines, and all feedback highlights their significant impact on client success.
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Undisclosed$50 - $99 / hrFreelancer
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See all 2 projectsLinéa Digital is a specialized eCommerce development company known for building optimized online stores on platforms like Shopify and WooCommerce. The reviews highlight Alex's expertise and problem-solving capabilities, with both clients praising his responsive communication and ability to deliver high-performing websites. Notably, 100% of the reviews praised the speed and performance of the developed websites, emphasizing customer satisfaction and efficient project management.
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$1,000+$50 - $99 / hr2 - 9Istanbul, Türkiye
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See all 1 projectsScaefy is a proficient web development company specializing in custom API development and seamless integration of AI solutions into WordPress environments. With 100% positive feedback, clients praise their technical expertise, clear communication, and commitment to innovation. They notably achieved a 45% increase in user interaction rates and reduced page load times by over 30%.
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$5,000+$50 - $99 / hr2 - 9Warszawa, Poland
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See all 2 projectsByteGeometry is a full-stack web development company specializing in custom website development and web application development. Notably, 100% of their feedback is positive, highlighting their exceptional project management, technical skill, and creative intuition. Clients commend them for delivering projects on time, capturing the envisioned concepts, and exceeding expectations with seamless, functional, and visually striking products.
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$25,000+$25 - $49 / hr10 - 49L'viv, Ukraine
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See all 10 projectsCodeGeeks Solutions is a web development company specializing in custom website development, full-stack web development, and web application development. Notably, 100% of reviewers praised their project management, technical expertise, and ability to integrate seamlessly into existing workflows. Additionally, their commitment to meeting client needs and delivering high-quality outcomes was highlighted consistently across reviews.
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$5,000+$25 - $49 / hr10 - 49Ahmedabad, India
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See all 2 projectsMantrasoft India is a company specializing in Web Development and Web Application Development, with a strong focus on custom website solutions. The reviews highlight their efficient project management and dedication, with 100% positive feedback. Approximately 33% of reviewers emphasize their ability to deliver custom back-end systems tailored to specific business needs.
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$1,000+$25 - $49 / hr2 - 9
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See all 1 projectsGruffi is a technology consultancy and development firm specializing in building complex modules for startups, such as secure payment gateways, business analytics services, and scheduling systems. Reviews highlight their consultative approach, with 100% of clients appreciating their thorough questioning and challenging of requirements. The firm is praised for its project management, though 20% suggest improvements in dedicated testing resources.
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$10,000+$150 - $199 / hr2 - 9
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See all 4 projectsBull & Beard is a web development company specializing in website development and design, including custom website development and responsive mobile solutions. Their reviews highlight a 100% positive feedback rate, with clients praising their transparency, effective project management, and professionalism. Approximately 50% of reviewers commend their ability to simplify complex topics and maintain excellent communication throughout the project.
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$1,000+$25 - $49 / hr10 - 49Moshi, Tanzania
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See all 19 projectsMAYOCOO is a web development company specializing in custom website development and responsive web design. Across their reviews, 100% of clients praised their attention to detail, timely delivery, and effective communication. Clients often highlighted their ability to create user-friendly websites that boosted online engagement and met specific business goals.
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$1,000+$25 - $49 / hr10 - 49Gothenburg, Sweden
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See all 4 projectsSource A Network AB is a web development company specializing in custom website and web application development. Reviews indicate a 100% satisfaction rate, highlighting their professionalism, timely delivery, and technical expertise. Clients commend their ability to transform ideas into scalable, user-friendly platforms, with 100% noting their effective project management and communication.
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$1,000+< $25 / hr2 - 9
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See all 2 projectsKico Web Design is a web development company specializing in custom website development and full-stack web development. With a 100% positive feedback rate, reviewers consistently praise their excellent project management, responsiveness, and ability to enhance online presence. Approximately 35% of reviewers highlight their effectiveness in lead generation and user engagement.
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$1,000+$25 - $49 / hr10 - 49Jaipur, India
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See all 4 projectsSTART DESIGNS is a web development company specializing in Website Development and Custom Website Development. They have received highly positive feedback, with clients particularly praising their effective communication and professionalism. Approximately 100% of reviewers express satisfaction with the websites created, highlighting their dedication and expertise in various platforms.
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Undisclosed$150 - $199 / hr10 - 49Baltimore, MD
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See all 2 projectsAstriata is a branding and design agency specializing in comprehensive rebranding, website overhauls, and digital design solutions. The company consistently receives positive feedback, with clients highlighting their meticulous project management and ability to create impactful designs that elevate brand perception. Approximately 100% of reviewers commend Astriata's attention to detail and client-focused approach, noting the transformative impact of their design work on both external perception and internal morale.
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$10,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 7 projectsVirtual Factory is a distinguished Web Development company, offering comprehensive services such as Website Development, Web Programming, and SEO optimization. The overall feedback is overwhelmingly positive, with approximately 100% of clients praising their collaborative approach, timely delivery, and high-quality results. Notably, 80% of reviewers emphasize the company's attention to detail and exceptional project management skills.
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$1,000+$100 - $149 / hr2 - 9Dhaka, Bangladesh
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See all 3 projectsRANK TRENDS is a web development company specializing in website development and web design. The company has received positive feedback, with 100% of reviewers highlighting their professionalism and impressive communication skills. Clients commend their ability to deliver projects on time, with one reviewer specifically praising their web development via WordPress.
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$1,000+$50 - $99 / hr10 - 49
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See all 4 projectsSimplix Innovations is a web development company excelling in website design, development, and hosting. With 100% positive feedback, clients appreciate their timely delivery, professional communication, and exceptional quality. Notably, 50% of reviewers highlight increased lead generation post-launch, and 30% note improved website traffic. Their work consistently aligns with client brand identities and strategic goals.
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$10,000+< $25 / hr50 - 249Dhaka, Bangladesh
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See all 33 projectsOntik Technology Ltd. is a web development company renowned for its proficiency in AI Development, Custom Software Development, and Full-Stack Web Development. The majority of reviewers, around 85%, commend their technical expertise, innovative solutions, and seamless integration across diverse industry platforms. However, approximately 15% mention concerns about project management and communication efficiency.
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UndisclosedUndisclosed10 - 49
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See all 5 projectsPromogent is a Web Development company specializing in Custom Website Development and Web Design. The company consistently receives positive feedback, with over 90% of reviews highlighting on-time delivery, professionalism, and effective communication. Clients commend their ability to integrate creativity with technical expertise, resulting in responsive and visually appealing websites that boost online visibility and customer engagement.
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$5,000+$50 - $99 / hr10 - 49
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See all 6 projectsSwaileap is a full-stack web development company specializing in custom website development and web application development. The company is praised for its open communication, flexibility, and timely delivery, with 100% of reviewers highlighting their efficient project management and responsiveness. Swaileap is recognized for delivering good value for cost and successfully meeting project objectives.
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$5,000+< $25 / hr10 - 49Jaipur, India
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See all 1 projectsPM IT SOLUTION is a web development company excelling in Website Development and SEO services, particularly in the EdTech sector. Based on reviews, 100% of clients express satisfaction with their high-quality deliverables, timely project completion, and exceptional customer support. The company's expertise in both development and digital marketing is highly valued by clients.
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$1,000+$25 - $49 / hrFreelancerBarcelona, Spain
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See all 2 projectsHable Studios is a design and development company specializing in creating WordPress websites and digital profiles. Reviewers commend their excellent communication and project management, with 100% expressing satisfaction. Many highlight the team's modern aesthetic sensibility and user-friendly approach. A majority of clients mention the smooth execution and timely delivery of their projects.
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$50,000+$50 - $99 / hr10 - 49Budapest, Hungary
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See all 1 projectsKonstruktor Online is an IT development company specializing in both software and hardware solutions. The reviews highlight their comprehensive service offering, including user experience design and project management, with 100% of feedback being positive. Clients praise their ability to integrate complex systems and their innovative approach, though they note room for growth in maturity and response time.
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$5,000+$100 - $149 / hr2 - 9
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See all 1 projectsPixelPeople is a web design company renowned for delivering effective and fast WordPress websites tailored to client needs. Reviews highlight their excellent communication, with 100% mentioning prompt responses and satisfaction with the final product. Clients appreciate their competitive pricing and reliability, making them a trustworthy choice for web design projects.
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$1,000+< $25 / hr10 - 49Bengaluru, India
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See all 6 projectsRemotebricks is a web development company specializing in full-stack web development, AI enablement, and automation support. They have received positive feedback for their technical expertise and project management, with 100% of reviews noting a significant increase in product quality and reduced response time. Their alignment with client values and competitive pricing are also praised.
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$1,000+$25 - $49 / hrFreelancerLahore, Pakistan
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See all 1 projectsMortis Labs is a web development company specializing in custom website development and web design. According to reviews, 100% of clients highlight their responsiveness and ability to drive high-quality traffic, resulting in increased e-commerce sales. Clients appreciate Mortis Labs for their excellent value and timely project delivery, with no notable areas for improvement mentioned.
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$5,000+$50 - $99 / hr2 - 9
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See all 7 projectsOsh Boutique is a web development company specializing in full-stack web development and custom website development. Their clients appreciate their swift delivery and helpful demeanor, with 100% of reviewers highlighting quick workarounds, though some suggest enhancements in their QA process.
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$5,000+$50 - $99 / hr10 - 49
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See all 6 projectsEnfluentia Technologies LLP. is a web development company specializing in Custom Website Development and CRM integration. Approximately 100% of reviews highlight their effective communication and personalized approach, with 50% noting significant improvements in user experience and traffic. The company is praised for its prompt, proactive service and customized solutions, leading to high client satisfaction.
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$1,000+< $25 / hr10 - 49Addis Ababa, Ethiopia
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See all 5 projectsSydek IT Solutions is a web development company offering services in Custom Website Development and Web Application Development, with a strong focus on project management and communication. All reviews highlight their attention to detail, agile methodologies, and excellent delivery, with 100% positive feedback on their communication and expertise in both website and application development.
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$10,000+$25 - $49 / hr10 - 49Kharkiv, Ukraine
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See all 2 projectsFaifly, LLC is a full-stack web development company known for its flexibility and customer-centric approach. They consistently deliver quality work on time and within budget, with a 100% positive feedback rate from clients. Their expertise in both front-end and back-end development, along with their agile project management, is highly praised by clients.
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$5,000+$25 - $49 / hr50 - 249Noida, India
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See all 4 projectsVipra is a versatile software and mobile application development company, highly praised for its effective project management and excellent communication skills. They have developed solutions for a range of industries, consistently delivering projects on time and accommodating client requests efficiently. Approximately 90% of reviewers highlight their technical expertise and strong understanding of business needs, with few areas for improvement noted.
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$1,000+$25 - $49 / hr50 - 249
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See all 2 projectsEncircl LLC is a versatile digital solutions company specializing in email deliverability and web development. They have received positive feedback from clients, with a focus on flexibility and effective communication. Notably, 100% of reviewers highlighted their expertise and project success, with improvements in email engagement and enhanced online presence. However, in-person meetings were cited as an improvement area due to geographical constraints.
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$1,000+Undisclosed10 - 49
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See all 1 projectsENVAST is a web development company specializing in custom website development, web programming, and full-stack web development. With 100% positive feedback, clients commend their expertise, reactivity, and ability to deliver projects on time and within budget, highlighting perfect load speed and excellent user experience.
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$10,000+$100 - $149 / hr2 - 9Charleston, SC
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See all 14 projectsComplete Web is a website development company known for its expertise in Web Design, Custom Website Development, and Web Programming. Across multiple reviews, 100% of clients highlight their responsiveness, professionalism, and great value for cost. Approximately 75% of reviews commend their impressive project management and communication skills, while over 50% note their ability to deliver projects on time and within budget.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsStriver Technosoft LLP is a mobile app development company known for offering high-quality, cost-effective solutions tailored to client needs. Their reviews highlight a 100% positive feedback rate, with clients praising their timely deliveries, responsiveness, and exceptional problem-solving skills, reflecting their expertise and experience in the industry.
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$1,000+$25 - $49 / hr10 - 49Rzeszów, Poland
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See all 1 projectsInvestimetric.io is a web development company specializing in custom website development and web application development, with a strong focus on back-end development. Their reviews reflect a high level of client satisfaction, with 100% positive feedback highlighting their expertise, flexibility, and effective project management. Clients particularly appreciate their innovative approach and ability to deliver projects on time and within budget.
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$1,000+< $25 / hr10 - 49Chandigarh, India
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See all 1 projectsCodeAI Labs Private Limited specializes in Web Development and Web Application Development, excelling particularly in MEAN stack technology. The company is praised for its quality and responsibility, with 100% positive feedback on their performance. While their expertise and project management are commendable, a noted area for improvement is unit testing.
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$10,000+$50 - $99 / hr2 - 9Chișinău, Moldova
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See all 3 projectsElysio (Out of Business) operated as a web development company, specializing in creating comprehensive online platforms and bespoke web solutions. The reviews consistently highlight their capability in full-stack web development, with a notable emphasis on designing user-friendly interfaces and robust back-end systems. Approximately 90% of reviewers appreciated Elysio's innovative approach and ability to exceed expectations, often transforming initial concepts into successful, widely praised web platforms.
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UndisclosedUndisclosed2 - 9
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See all 2 projectsDevNova is a web development company specializing in custom website development and web design, with a focus on creating responsive, mobile-friendly sites. Clients praise their clear project management and responsiveness, with 100% positive feedback highlighting efficient deliveries and flexibility in addressing requests, ultimately enhancing online credibility and brand presence.
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$1,000+$100 - $149 / hr2 - 9Los Angeles, CA
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See all 11 projectsNexeo, a distinguished web development company, excels in custom website development, full-stack web development, and web application development. With unanimous positive feedback, clients highlight Nexeo's high-quality work, responsiveness, and innovative approach to both front-end and back-end development. Approximately 100% of reviews praise their ability to deliver projects on time and their impressive project management skills.
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$50,000+Undisclosed2 - 9New York, NY
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See all 2 projectsNeoSkript is a web development company specializing in custom website development and web application development. They have earned positive feedback from clients, with 100% of reviewers highlighting their ability to enhance online presence and user engagement. Clients are impressed by NeoSkript's proactive communication and technical expertise, although there is room for improvement in initial onboarding and CMS training.
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$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
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See all 5 projects3e Software House is a comprehensive software development company specializing in full-stack solutions, encompassing both backend and frontend development. The company is highly praised, with an impressive record of delivering projects on time and maintaining high service quality. Over 90% of the reviews highlight their technical expertise, proactive approach, and effective communication. They are frequently commended for their agile methodologies and ability to manage complex projects efficiently.
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$50,000+$50 - $99 / hr10 - 49Dortmund, Germany
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See all 6 projectsSvitSoftware is a versatile software development company providing services such as full-cycle development, mobile app development, UX/UI design, and custom software solutions. Across reviews, 100% of clients commend their technical expertise, project management, and responsiveness. Their emphasis on quality, flexibility, and a strong cultural fit is consistently praised by clients, with no significant areas for improvement noted.
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$1,000+< $25 / hr10 - 49Kazhakkoottam, India
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See all 2 projectsNxtGenix Solutions Pvt Ltd is a web development company specializing in UI/UX design. The company is praised for its professional approach and timely delivery, with 100% of reviewers mentioning satisfaction with the project management and timelines. They offer good value for cost, making them a reliable choice for custom website development projects.
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$50,000+$50 - $99 / hr2 - 9Hollywood, FL
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See all 2 projectsRockinDev is a web development company specializing in advanced web technology and cloud engineering. They consistently deliver projects on time, with 100% of reviewers noting their technical expertise and strong project management. Their attention to detail and commitment to quality have led to increased client engagement and successful outcomes.
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$10,000+$25 - $49 / hr2 - 9Pazin, Croatia
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See all 1 projectsInstitute of Ideas and Inventions is a web development company that specializes in website development and online promotion. Clients have praised their professional execution, effective communication, and ability to visualize and realize project ideas, with 100% positive feedback. The team is noted for its responsiveness and approachability, though enhanced communication via video calls could improve remote collaboration.
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$10,000+$50 - $99 / hr2 - 9
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See all 2 projectsProdRocket is a strategic consulting firm specializing in product and marketing strategy for early-stage startups. Their clients commend their ability to clarify market positioning and develop targeted go-to-market plans, with 100% of reviewers highlighting their effective collaboration and innovative solutions. ProdRocket has been instrumental in launching products and achieving early adoption, with no areas for improvement mentioned.
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$10,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 6 projectsPerpetuum Mobile is a web development company specializing in custom website development, web application development, and e-commerce solutions using platforms like Magento and Drupal. Their expert team is praised for their quick understanding of client needs and excellent communication, with 100% of reviews highlighting satisfaction with their work. However, some clients suggest increasing staffing to enhance project speed.
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$5,000+< $25 / hr10 - 49Hanoi, Vietnam
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See all 1 projectsSiten Software Company is a management software provider specializing in utility services for sectors such as restaurants, homestays, and spas. Their clients report high satisfaction, with 100% of reviewers praising their project management capabilities, responsiveness, and innovative approach, highlighting their transformation of traditional management methods into modern, technology-driven solutions.
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List of the Top 15 JavaScript Development Companies
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$75,000+$100 - $149 / hr50 - 249Vancouver, Canada
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
90% Web Development50% JavaScript10% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
39.3/40.019.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.3/40.019.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Web Development75% JavaScript55% Other -
$25,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
40% Web Development60% JavaScript60% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% Other -
$10,000+Undisclosed50 - 249San Francisco, CA
Ability to deliver
38.5/40.019.2/20 Reviews9.6/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$25,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
65% Web Development20% JavaScript35% Other -
$10,000+$50 - $99 / hr50 - 249Kuala Lumpur, Malaysia
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Web Development70% JavaScript70% Other -
$5,000+$50 - $99 / hr50 - 249Chicago, IL
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
35% Web Development40% JavaScript65% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.3/40.017.4/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$10,000+$25 - $49 / hr250 - 999San Francisco, CA
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
15% Web Development40% JavaScript85% Other -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
39.6/40.019.6/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% Other -
$10,000+$50 - $99 / hr250 - 999Marlborough, MA
Ability to deliver
39.3/40.019.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
25% Web Development25% JavaScript75% Other -
$1,000+< $25 / hr250 - 999Walpole, MA
Ability to deliver
35.9/40.016.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development35% JavaScript60% Other -
$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
10% Web Development25% JavaScript90% Other -
$50,000+$25 - $49 / hr50 - 249Kharkiv, Ukraine
Ability to deliver
36.4/40.016.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development50% JavaScript55% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.3/40.016.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
38.7/40.019.2/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
30% Web Development21% JavaScript70% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37/40.018/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
38.3/40.018.4/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% Other -
$100,000+$25 - $49 / hr250 - 999Cebu City, Philippines
Ability to deliver
38.7/40.020/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
30% Web Development20% JavaScript70% Other -
$10,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
28% Web Development15% JavaScript72% Other -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
37.5/40.018.2/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$10,000+$25 - $49 / hr1,000 - 9,999Plano, TX
Ability to deliver
36.5/40.016.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$50,000+$150 - $199 / hr50 - 249Matlock, England
Ability to deliver
37.8/40.018/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$50,000+$150 - $199 / hr250 - 999Irvine, CA
Ability to deliver
36.2/40.016.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development30% JavaScript70% Other -
$50,000+$150 - $199 / hr50 - 249New York, NY
Ability to deliver
35.5/40.015.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$5,000+$50 - $99 / hr50 - 249Maribor, Slovenia
Ability to deliver
36.1/40.020/20 Reviews10/10 Clients & Experience6.1/10 Market PresenceService focus
40% Web Development100% JavaScript60% Other -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
37.6/40.017.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% Other -
$25,000+$50 - $99 / hr50 - 249Poznań, Poland
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Web Development10% JavaScript50% Other
Top JavaScript Development Agencies
A JavaScript development company designs, builds, and maintains software products that rely on JavaScript across the stack. Teams typically handle front-end interfaces (React, Vue, or Angular), back-end services (Node.js, Express, NestJS), and database integrations. They translate business requirements into clean, maintainable code, implement third-party APIs, optimize performance, and provide ongoing support or feature enhancements. For startups, they may act as a dedicated product team; for enterprises, they often augment in-house engineers to accelerate delivery.
Most agencies bundle multiple offerings so clients can access full product life-cycle support:
- Discovery workshops & technical consulting
- UI/UX design and prototyping
- Front-end SPA or PWA development
- Server-side development with Node.js or Deno
- API design, GraphQL, and microservices architecture
- QA automation & performance testing
- DevOps, CI/CD, and cloud deployment (AWS, Azure, GCP)
- Post-launch maintenance and feature sprints
Some firms specialize in niches such as ecommerce storefronts, real-time dashboards, or IoT applications built with JavaScript frameworks like Next.js or Svelte.
Clutch data shows project budgets range widely:
- MVP or small web app - $15,000–$50,000
- Mid-size product build - $50,000–$200,000
- Enterprise-grade platform - $200,000–$1M+ | Hourly rates usually fall between $50–$149 depending on agency location, seniority, and specialization. Expect higher rates for U.S.-based teams and advanced services like real-time streaming or complex integrations.
- Align expertise: Verify experience with your required stack (e.g., React Native, TypeScript, serverless).
- Review case studies: Look for measurable outcomes—load-time reductions, user growth, or revenue lifts.
- Check communication style: Agile ceremonies, dedicated Slack channels, and transparent ticket tracking are green flags.
- Validate cultural fit: Long-term projects thrive when collaboration styles and time zones mesh.
- Compare total cost of ownership: Factor in maintenance, future scalability, and licensing—not just upfront build fees.
Shortlist 3-5 agencies on Clutch, schedule discovery calls, and request project roadmaps before signing an agreement.
- Guaranteed timelines without discovery
- No access to source code repositories during the engagement
- Outdated tech stacks (e.g., jQuery-only solutions for modern SPAs)
- Low developer retention or high turnover
- Vague pricing models or hidden fees
If an agency dismisses code reviews, ignores testing, or refuses to provide client references, proceed with caution
- Which JavaScript frameworks do you specialize in, and why?
- Can you walk me through a recent project with similar complexity?
- How do you ensure code quality—linting, peer reviews, automated tests?
- What is your approach to scalability and performance optimization?
- How will we communicate and track progress (tools, meeting cadence)?
- Who owns the intellectual property and source code upon project completion?
Clear answers reveal an agency’s maturity, processes, and commitment to delivering long-term value.
A freelancer is ideal for small fixes or short-term enhancements, offering lower overhead and flexible hours. Agencies provide multidisciplinary teams including project managers, UI designers, and QA engineers capable of delivering end-to-end solutions and scaling resources quickly. While agencies cost more, they reduce single-point-of-failure risk and accelerate time-to-market for complex products. How do JavaScript firms measure ROI? Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.
Common KPIs include page-load speed improvements, conversion rate uplifts, reduced infrastructure costs after code optimization, and user engagement metrics (session duration, churn reduction). Firms often set baseline metrics during discovery and provide post-launch analytics dashboards to demonstrate value.