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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$5,000+$25 - $49 / hr2 - 9Lahore, Pakistan
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See all 3 projectsPseudosquare is a web development company specializing in full-stack web development and custom website development, particularly using Ruby on Rails. The reviews reflect a 100% positive sentiment, highlighting their commitment, flexibility, and authentic relationships. Notably, 50% of reviewers praised their adaptability and dedication to client satisfaction, while the quality of work consistently met client expectations.
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$1,000+< $25 / hr2 - 9
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See all 2 projectsDrupOst is a web development company specializing in Drupal-based solutions, offering services such as Custom Website Development and Full-Stack Web Development. Over 95% of the feedback is positive, highlighting their reliability, exceptional communication, and timely delivery. Clients commend their expertise in complex CMS and web application development, demonstrating strong project management skills and high-quality code.
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$10,000+$25 - $49 / hr2 - 9Wrocław, Poland
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See all 3 projects64pandas is a web development company specializing in back-end development and custom website development, utilizing technologies like Python and Django. With consistently positive feedback, clients appreciate their adaptability, timely delivery, and quality of work, with 100% of reviewers highlighting their flexibility and professionalism.
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$1,000+Undisclosed50 - 249
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See all 100 projectsKwebmaker is a comprehensive web development company specializing in custom website development, full-stack web development, and web application development. Across their reviews, 100% of clients commend their technical expertise and responsiveness. They consistently deliver successful outcomes, such as improved online conversion rates or enhanced platform performance, by combining strategic insights with innovative technical solutions.
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$5,000+$50 - $99 / hr2 - 9
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See all 1 projectsCraftspire is a software development company specializing in agile project management and technologies such as Kotlin and Angular, with a focus on e-signature and document management solutions. Reviews highlight their professionalism, expertise, and ability to adapt to evolving requirements, contributing to high client satisfaction and increasing software adoption rates. Clients appreciate their transparent communication and dedication, with minor suggestions for improved documentation.
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$1,000+$25 - $49 / hr10 - 49Gurugram, India
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See all 3 projectsCenozic is a web development company offering custom website development and web application development services. The reviews reflect an overall positive sentiment, highlighting their technical expertise, collaborative approach, and ability to deliver high-quality custom solutions, with approximately 90% of clients praising their efficient project management and tailored web solutions. Some feedback suggests improvements in initial timeline estimates and customer service response times.
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$1,000+$25 - $49 / hr50 - 249Sahibzada Ajit Singh Nagar, India
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See all 9 projectsWHMCS Global Services is a web development company specializing in custom WHMCS modules and full-stack web development. Reviews showcase a mixed sentiment, with one review highlighting commendable project delivery and communication, while another underscores persistent billing disputes and management issues. Approximately 50% of feedback emphasizes effective web development, but billing practices remained a concern for some clients.
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$10,000+$100 - $149 / hr2 - 9Spring, TX
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See all 7 projectsTEXAS SOFTWARE is a web development company specializing in custom website development and marketing automation. The reviews highlight their exceptional attention to detail, responsiveness, and ability to meet client expectations, with 100% positive feedback from clients. They are commended for their efficient project management and strong communication skills, ensuring timely project delivery and client satisfaction.
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$1,000+$25 - $49 / hr10 - 49Ghaziabad, India
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See all 1 projectsGenieSoftSystem Pvt Ltd is a mobile application development company with expertise in creating Android mobile security solutions and fintech platforms. The company consistently receives positive feedback, with reviewers highlighting their personalized attention and professionalism throughout projects. 100% of reviewers mentioned timely delivery and adaptability to project modifications, underscoring GenieSoftSystem's commitment to meeting client needs effectively.
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Undisclosed$50 - $99 / hr10 - 49L'viv, Ukraine
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See all 1 projectsUS Informatics is a software development company specializing in Android application development, leveraging technologies like Java, HTML5, and jQuery. Overall, 100% of the feedback highlights their responsive communication and effective project management, though continuity in retaining talent is noted as a challenge. The company is praised for providing quality services at competitive prices while operating efficiently within U.S. time zones.
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$5,000+< $25 / hr10 - 49Ha Noi, Vietnam
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See all 1 projectsTEQIE is a technology company specializing in developing payment platforms, particularly for the F&B industry. The company is praised for its responsiveness and quality solutions, with 100% of reviewers expressing satisfaction with their work. Clients appreciate their effective communication and project management, facilitated through tools like Skype and Google Meet.
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$10,000+$25 - $49 / hr10 - 49
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See all 1 projectsWECODE is a software development company specializing in creating marketplace apps with a strong focus on UX/UI design and innovation. The company has consistently impressed clients with original ideas and a commitment to incorporating market trends. All reviewer feedback is positive, highlighting effective project management and communication, which contributed to the successful development and high user engagement of the Metta app.
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$5,000+$25 - $49 / hr10 - 49
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See all 4 projectsViPrak Web Solutions is a web development company proficient in Website Development and iOS applications. Reviewers highlight their professionalism and timely delivery, with 100% positive feedback on their skillful execution of complex projects, such as building platforms for direct student-teacher communication. The firm excels in PHP and Swift, ensuring high-quality outputs.
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$1,000+$50 - $99 / hr2 - 9
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See all 2 projectsCentricweb is a mobile application development company specializing in creating cross-platform solutions for healthcare professionals. Feedback from clients indicates a 100% positive response, highlighting their intuitive design, effective project management, and adaptability. Clients commend their ability to deliver well-structured and user-friendly apps, enhancing clinical efficiency and satisfaction.
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$1,000+$50 - $99 / hr50 - 249Drive, England
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See all 4 projectsiTechniq is a web development company specializing in custom website development, web application development, and performance marketing. The firm has received positive feedback, with clients noting their technical expertise, cost-effectiveness, and timely project delivery. Approximately 100% of reviewers highlighted iTechniq's seamless project management and ability to exceed expectations, particularly in enhancing business performance and user experience.
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$1,000+$25 - $49 / hr50 - 249
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See all 16 projectsEncoreSky Technologies is a web development company specializing in Website Development, Web Design, and Web Programming, offering both front-end and back-end solutions. With a 100% positive feedback rate across diverse projects, clients commend their timely delivery, effective communication, and alignment with company values, alongside solid technical knowledge and adaptability in addressing complex requirements.
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$5,000+$25 - $49 / hr50 - 249
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See all 4 projectsMidriff Info Solution Pvt. Ltd. is a distinguished web development company specializing in creating customized applications, platforms, and databases. Their exceptional project management and high-quality services have impressed clients, with 100% of reviews highlighting their professionalism and effective communication. Clients commend their ability to deliver on time, often exceeding expectations, while catering to industry-specific needs through tailored solutions.
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$5,000+$50 - $99 / hr2 - 9
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See all 4 projectsCreek & Pine is a web development company specializing in custom website development, web design, and digital experiences. They consistently receive positive feedback, with 100% of reviewers praising their effective project management, timely delivery, and eco-friendly features. Clients are impressed by their proactive communication and ability to enhance original ideas, making them a reliable choice for comprehensive web development needs.
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$1,000+< $25 / hr2 - 9Ahmedabad, India
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See all 1 projectsAppteg Technologies is a Web Development company specializing in creating high-end websites and shops. They received positive feedback for their skilled team, effective communication, and timely delivery, with 100% of reviewers highlighting their project management and work ethic.
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$1,000+$25 - $49 / hr2 - 9Chhapi, India
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See all 1 projectsQuba Infotech is a web development company that excels in full-stack web development and web application development, with particular expertise in Java, Spring Boot, and AWS deployment. The company has received overwhelmingly positive feedback, with 100% of reviewers highlighting their proactive communication, high-level expertise, and strong client bonding. They are noted for delivering robust, scalable solutions and demonstrating exceptional project management skills.
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$1,000+$25 - $49 / hr2 - 9Rīga, Latvia
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See all 1 projectsWebsalutem Web Development Agency excels in Custom Website Development, delivering high-performing, user-friendly, and SEO-optimized websites. With 100% positive feedback, clients praise their attention to detail, technical expertise, and effective project management. They achieved a 40% improvement in website load times and a 30% increase in organic traffic, enhancing client satisfaction.
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$1,000+$25 - $49 / hr10 - 49Surat, India
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See all 2 projectsKnoxpo is a web development company specializing in Front-End Development and creating sophisticated web applications. The company receives overwhelmingly positive feedback, with 99% of deadlines met and consistent satisfaction in deliverables. Clients commend Knoxpo for their polished work and affordability, highlighting their effectiveness in building reusable web systems.
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$10,000+$50 - $99 / hr2 - 9Berlin, Germany
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See all 1 projectsEmerald Solutions is a web development company specializing in full-stack web development and custom website development services. The reviews highlight their exceptional flexibility, dedication, and timely delivery, with an impressive 100% positive feedback on their quality and responsiveness. Their notable achievements include successfully developing an e-commerce platform and a crowdfunding platform that raised over €3.9 million.
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$10,000+$50 - $99 / hr10 - 49
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See all 1 projectsCodementorX is a company specializing in providing freelance developers for web development projects, with a focus on supplemental WordPress expertise and SEO integration. They have received positive feedback for their ability to quickly provide technically proficient and collaborative developers, though some clients noted a recent increase in the time taken to assign new candidates. Overall, 100% of reviewers expressed satisfaction with their deliverables and solutions.
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UndisclosedUndisclosed10 - 49Buzin, Croatia
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See all 1 projectsGlobaldizajn is a web development company specializing in full-stack web development, including front-end and back-end development, as well as custom website development and SEO optimization. With 100% positive feedback, clients highlight their creativity, technical expertise, and effective project management, resulting in significant improvements in website performance, user engagement, and organic traffic growth.
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Undisclosed$100 - $149 / hr10 - 49Englewood Cliffs, NJ
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See all 1 projectsSearch Marketing Group is an SEO and web design agency that excels in providing customized marketing solutions tailored to client needs. They are highly regarded for their willingness to experiment and adapt strategies for optimal results, with a focus on delivering quality leads. Reviewers consistently commend their transparency and adaptability, contributing to an overall positive perception of their services.
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$5,000+$50 - $99 / hr10 - 49
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See all 1 projectsWe AppIt is a web development company known for its expertise in Website Development and Custom Website Development. Reviews commend their efficiency and commitment, with 100% positive feedback highlighting their rapid project delivery and dedication. Clients consistently praise their passion and integrity, making them a preferred choice for web solutions.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 2 projectsAOM Web Designer - Web Design & SEO Company Ahmedabad is a web development company offering comprehensive services, including web design and SEO. Reviewers highlight their budget-friendly pricing and timely project completion, with around 90% mentioning improved online presence. While feedback is predominantly positive, some suggest more frequent progress updates could enhance service delivery.
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$1,000+$50 - $99 / hr50 - 249Värnamo, Sweden
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See all 5 projectsVeritaz is a company specializing in Custom Website Development and Web Programming. Their reviews reflect a collaborative project management style and strong professionalism, with 100% of feedback being positive. Clients praise their expertise in delivering secured and artistically styled websites, although some suggest they could expand their network.
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$5,000+$100 - $149 / hr10 - 49São Paulo, Brazil
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See all 2 projectsBolt Brasil is a web design and online development company specializing in modernizing established brands. They excel in front-end development, creating visually appealing and consistent designs. With 100% positive feedback highlighting their creativity and professionalism, they have successfully increased client visibility and conversion rates. Their team is noted for combining youthful innovation with professional expertise.
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$1,000+$25 - $49 / hr50 - 249Secunderabad, India
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See all 1 projectsMS Web Professional Design Pvt.Ltd. is a web and mobile app development company specializing in creative design and efficient project management. Reviews highlight their strong performance, with 100% of feedback being positive, noting their innovative designs and excellent support. Clients appreciate their proactive management and the ability to deliver projects before deadlines.
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$1,000+< $25 / hr2 - 9मुंबई, India
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See all 1 projectsOne Sec Media is a digital agency specializing in website creation and social media management. The company is praised for its impressive coordination and effective project management. The reviews reflect a 100% positive sentiment, highlighting that clients had a good experience overall with no areas for improvement noted.
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UndisclosedUndisclosed2 - 9Kissimmee, FL
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See all 1 projectsSystron Micronix is a web development company specializing in full-stack web development, custom website development, and reliable hosting solutions. Their clients report a 35%-50% improvement in page load times and a hosting uptime of 99.5%-99.9%, with positive feedback highlighting their technical expertise, reliability, and commitment to performance. Reviewers note the need for more proactive reporting, but overall satisfaction remains high.
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$1,000+< $25 / hr10 - 49Vadodara, India
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See all 3 projectsAcadify Solution is a web development company specializing in Website Development and Custom Website Development for nonprofits. Reviewers consistently highlight their professionalism, commitment to understanding client needs, and effective project management. Positive feedback includes a 30% increase in donor inquiries and a 40% reduction in manual work post-implementation, with 100% of reviewers noting improved online presence and communication.
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$25,000+$50 - $99 / hr10 - 49Budapest, Hungary
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See all 3 projectsSquare21 is a distinguished web development company specializing in custom website development and full-stack web development. Reviews highlight their proactive approach and technical expertise, with 100% of clients praising their project management and ability to deliver scalable, user-friendly solutions. They are noted for improving user experience and performance, making them a reliable partner for modernizing digital platforms.
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$10,000+$25 - $49 / hr10 - 49Chennai, India
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See all 5 projectsIndra Crypto Capital is a web development company specializing in custom website development with expertise in front-end and back-end development. The overwhelmingly positive feedback highlights their professionalism and efficiency, with 100% of reviewers praising their project ownership and problem-solving capabilities, particularly in handling complex technical issues swiftly.
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$10,000+$25 - $49 / hr10 - 49
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See all 8 projectsGanesha WebTech Solutionz is a proficient web development company specializing in full-stack and custom website development, web programming, and web application development. Their reviews indicate a 100% positive feedback rate, highlighting their expertise in coding and web design, exceptional project management, and effective communication. Clients commend their ability to transform visions into functional and aesthetic websites while maintaining efficient and timely project delivery.
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$10,000+$100 - $149 / hr50 - 249Helsinki, Finland
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See all 2 projectsWunderdog is a software development company specializing in providing experienced developers for interim roles and project-specific needs. Their services have been positively reviewed by clients, with 100% of reviewers expressing satisfaction with their ability to seamlessly integrate into existing teams and provide effective solutions. Clients highlight Wunderdog's ability to deliver the right talent at the right time, facilitating the successful continuation and acceleration of projects.
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$10,000+$100 - $149 / hr2 - 9
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See all 1 projectsRed8 Interactive is a Web Development company specializing in technical design and development, particularly within the WordPress platform. Reviews highlight their proficiency in Front-End Development and solution-oriented processes, with 100% of reviewers noting their responsiveness and ability to enhance design functionality. Most feedback is positive, praising their collaboration and development expertise.
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$25,000+$150 - $199 / hr50 - 249West Palm Beach, FL
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See all 1 projectsPrimacy is a web development company specializing in services such as mobile application development. Based on reviews, 100% of respondents commend their skilled team and impressive ability to tackle complex tasks, highlighting their effective project management and strong research and development skills. No areas for improvement were noted by reviewers.
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$5,000+$100 - $149 / hr10 - 49Wilmington, NC
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See all 2 projectsBlueTone Media Web Design is a web design and development company known for its personalized customer service and responsiveness. With 100% positive feedback, clients appreciate their ability to deliver projects efficiently and their willingness to accommodate requests promptly. Reviewers highlight the importance of providing detailed project specifications to ensure successful outcomes, as BlueTone Media executes exactly what is requested.
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$1,000+$50 - $99 / hr2 - 9
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See all 2 projectsQuilytics is a data analytics company specializing in Google Analytics audits, GA4 build-outs, and Google Data Studio dashboards. The company consistently receives positive feedback for its professional approach and effective communication, with clients highlighting their patience and positive attitude. A notable 100% of the feedback emphasizes their excellent work and seamless integration into client workflows.
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$1,000+$25 - $49 / hr2 - 9Rajkot, India
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See all 2 projectsYogi Infoway is a web development company specializing in custom design and development solutions. Their reviews highlight a strong commitment to delivering projects on time and within budget while maintaining collaborative communication throughout. With 100% positive feedback, clients commend their accurate estimations and efficient project management.
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$5,000+< $25 / hr2 - 9Kragujevac, Serbia
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See all 3 projectsWieQuee is a web development company specializing in Web Application Development, with expertise in technologies such as Laravel and Vue. They receive positive feedback for their communication, flexibility, and dedication to timely project completion. With reviewers noting their effective project management and impactful results, over 80% of the feedback highlights their impressive performance and customer-centric approach.
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$10,000+$25 - $49 / hr10 - 49Sahibzada Ajit Singh Nagar, India
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See all 6 projectsOmninos Solutions is a web development company offering services such as website development, web hosting, and SEO. Their reviews highlight professionalism, timely delivery, and client-focused service, with 100% of reviewers praising the quality and impact of their work on business growth. Some feedback suggests enhancing their SEO services for greater effectiveness.
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$25,000+$100 - $149 / hr10 - 49Toronto, Canada
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See all 2 projectsSwitch Creative Solutions Inc. is a custom software development and data warehousing company that excels in transforming visions into reality through comprehensive research and tailored solutions using advanced technologies like JavaScript and AWS. With a 100% positive feedback rate, clients commend their exceptional project management, proactive team involvement, and reliable technical expertise, often exceeding expectations and going beyond project scopes.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 1 projectsKrupa Info Services is a versatile development company offering expertise in PHP, .NET, Magento, and WordPress, as well as hybrid mobile app development. Reviewers consistently highlight the high quality of deliverables and strong communication, with 100% positive feedback. Clients commend their skilled developers and effective project management.
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$1,000+< $25 / hr10 - 49Gandhinagar, India
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See all 3 projectsAsambhav Solutions is a web development company known for its expertise in Web Application Development and Custom Website Development. Their projects are consistently delivered on time and within budget, with 100% of clients highlighting strong communication and impressive technical skills.
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$50,000+$150 - $199 / hr10 - 49Broomfield, CO
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See all 1 projectsLatitude 40 Consulting, Inc. is a technology consulting firm specializing in system integrations, cloud transitions, and modernizing business infrastructures. The reviews reflect a 100% positive feedback rate, highlighting their responsive project management and strategic questioning that enhances business outcomes. Clients value their partnership, citing significant improvements in technology and customer experience within 18 months.
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$5,000+< $25 / hr10 - 49Dubai, United Arab Emirates
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See all 3 projectsFABMEDIA, a web development and app development company, consistently receives positive feedback for its exceptional project management, clear communication, and ability to deliver on time. Approximately 95% of reviewers highlight their professionalism and dedication to customer satisfaction, specifically in Website Development and Flutter App Development. The company is recognized for providing high-quality services that exceed expectations, making it a preferred choice for budget-conscious clients.
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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.