Top JavaScript Developers
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$5,000+$25 - $49 / hr50 - 249London, England
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See all 93 projectsDigis, a Fiverr company (NYSE: FVRR), is a web development firm specializing in full-stack web development, custom website development, and web application development. They are praised for their high-quality developers and exceptional project management, consistently delivering projects on time with improved efficiencies. Approximately 90% of reviewers commend their communication skills and proactive approach, with no significant areas for improvement mentioned.
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$10,000+$25 - $49 / hr250 - 999Sacramento, CA
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See all 17 projectsBluelight is a web development and consulting company specializing in custom website development, web application development, and DevOps solutions. The company consistently receives high praise for its reliable project management, responsive communication, and alignment of company values, with 100% of reviewers expressing satisfaction. Clients frequently highlight Bluelight’s strong technical expertise and timely deliverables.
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$10,000+$150 - $199 / hr10 - 49Irvine, CA
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See all 14 projectsKingsmen Digital Ventures is a full-stack web development company known for its expertise in custom website development and web application development. Across multiple reviews, 100% of clients praised their project management and timely delivery, while 80% highlighted their ability to meet specific business needs with high-quality, scalable solutions. Clients consistently appreciate their responsiveness and commitment to excellence.
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$50,000+$50 - $99 / hr1,000 - 9,999New York, NY
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See all 102 projectsVention is a versatile web development company specializing in full-stack and custom website development, providing services such as backend optimization and frontend development. The feedback from clients is overwhelmingly positive, with 100% of the reviewers praising their responsive communication, project management, and ability to understand and meet client needs. Clients frequently highlight Vention's expertise in enhancing platforms through innovative solutions and their role in boosting business scalability and revenue.
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$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
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See all 45 projectsLionwood.software is a web development company known for its proficiency in full-stack web development, web application development, and custom website development. The company has garnered overwhelmingly positive feedback, with reviewers frequently highlighting their professionalism, commitment, clear communication, and the high value they provide. Notably, 100% of reviewers were impressed by the team's responsiveness and ability to meet deadlines.
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$75,000+$100 - $149 / hr50 - 249Vancouver, Canada
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See all 92 projectsImageX is a web development company specializing in custom website development and web application development, with a particular focus on Drupal-based solutions. The overall feedback from clients is overwhelmingly positive, with 100% of reviews highlighting their professional project management and technical expertise. Notably, 90% of reviewers commend ImageX for their ability to integrate seamlessly with in-house teams, providing a collaborative and responsive service.
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$25,000+$50 - $99 / hr50 - 249Kraków, Poland
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See all 60 projectsxfive is a web development company specializing in custom website development, web application development, and full-stack web development. Client feedback indicates high satisfaction, with 100% positive reviews praising their punctual delivery, strong project management, and excellent communication. Approximately 90% of reviewers highlight their flexibility and ability to understand complex project needs, making them a reliable choice for web programming and design solutions.
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$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
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See all 53 projectsBrainhub is a web development company specializing in full-stack web development, front-end development, and custom website development. The company consistently receives positive feedback for its technical proficiency, particularly in JavaScript and React, with over 90% of reviewers highlighting their expertise in these areas. Clients commend their effective project management and transparent communication, with frequent mentions of their proactive approach and adaptability to changing project requirements.
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$25,000+$50 - $99 / hr50 - 249Gliwice, Poland
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See all 78 projectsThe Software House is a full-stack web development company specializing in custom website and web application development. Across reviews, they have consistently been praised for their exceptional technical expertise, client-focused approach, and ability to meet deadlines, with over 90% of reviewers highlighting their strong project management and communication skills. Their team is noted for delivering innovative, high-quality solutions within budget constraints.
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$10,000+$25 - $49 / hr250 - 999Bengaluru, India
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See all 120 projectsGeekyAnts is a full-stack web development company that specializes in custom website development, web application development, and other software solutions. With an impressive 100% positive feedback rate from reviewers, common themes include timely delivery, excellent communication, and a deep commitment to quality and client satisfaction. Frequently commended for their value for money, GeekyAnts consistently exceeds client expectations across a diverse array of industries.
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$10,000+$50 - $99 / hr50 - 249Amsterdam, Netherlands
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See all 71 projectsLizard Global is a multifaceted web development company specializing in custom website development, full-stack web development, and web application development. With positive feedback from all reviewers, they are praised for their excellent project management, on-time delivery, and strong communication skills. Clients frequently commend their proactive approach, with over 90% highlighting their strategic insight and reliability.
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$25,000+$50 - $99 / hr50 - 249London, England
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See all 62 projectsunicrew is a dynamic web development company that excels in both front-end and back-end development, including full-stack web development and web application development. Reviews highlight their strong project management, technical expertise, and responsive communication, with 100% positive feedback. Clients appreciate their reliability and professionalism, noting a consistent delivery of high-quality work and a seamless integration into existing workflows.
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$5,000+$50 - $99 / hr50 - 249Chicago, IL
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See all 97 projectsPopArt Studio is a web development company specializing in website design, custom website development, and SEO. The firm consistently receives high praise for its quality of work, professional project management, and alignment with client values. Over 90% of reviews highlight their responsiveness and attention to detail, with clients often impressed by their creativity and ability to meet deadlines.
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$10,000+< $25 / hr250 - 999Hanoi, Vietnam
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See all 41 projectsPowerGate Software is a versatile software development company specializing in web application development, custom software solutions, and mobile app development. Their services have garnered positive feedback, with highlights such as 100% satisfaction in project management and communication, and praise for their technical expertise in areas like front-end development and AI. Clients frequently commend their timely delivery and responsiveness, although there's a noted area for improvement in spoken English proficiency among team members.
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$10,000+$25 - $49 / hr250 - 999New York, NY
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See all 81 projectsCleveroad is a versatile web development company known for its proficiency in Custom Website Development and Web Application Development. With a 100% positive feedback rate, clients commend their responsive project management and high-quality code across diverse projects. Impressively, 42% of reviewers highlight Cleveroad's ability to align with their business needs, making them a trusted partner in Full-Stack Web Development solutions.
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$10,000+$50 - $99 / hr250 - 999Marlborough, MA
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See all 70 projectsScopic is a versatile web development company excelling in custom website development, online development, and web application development. With 90% of reviews highlighting their technical expertise and strategic thinking, Scopic is praised for their responsiveness and project management. They offer a wide range of services including front-end and back-end development, marketing, and SEO, though some reviews suggest room for improvement in marketing and website development.
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$25,000+< $25 / hr250 - 999Ahmedabad, India
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See all 86 projectsWPWeb Infotech is a web development company specializing in custom website development, full-stack web development, and web application development. The company has received overwhelmingly positive feedback for its reliable project management, with 100% of reviewers noting their strong communication, responsiveness, and timely delivery. Clients commend their ability to provide value for cost and their technical expertise in both front-end and back-end development.
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$5,000+$50 - $99 / hr10 - 49Poznań, Poland
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See all 55 projectsAdchitects is a versatile web development company specializing in services such as Website Development, Web Design, and SEO. Reviewers consistently praise their professionalism, communication, and project management, with over 85% of feedback highlighting these aspects positively. Customers commend their ability to deliver high-quality custom website solutions on time and within budget, demonstrating their expertise in both front-end and back-end development.
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$25,000+$50 - $99 / hr10 - 49Seattle, WA
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See all 36 projectsBilberrry is a renowned web development company specializing in custom website development, full-stack web development, and web design. Highly praised for their project management and communication skills, nearly all reviews reflect positive feedback, with 100% of clients commending their ability to deliver projects on time and within budget. About 70% of reviewers highlight Bilberrry's user-centered design approach and adaptability in addressing challenges.
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$5,000+$50 - $99 / hr50 - 249Maribor, Slovenia
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See all 53 projectsFlowout is a web development company specializing in custom website development, full-stack web development, and web application development. Across multiple reviews, clients commend Flowout's fast turnaround, excellent project management, and seamless communication, leading to successful project completion. Positive feedback encompasses over 95% of reviews, with 80% mentioning their responsiveness and ability to meet tight deadlines.
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$50,000+$150 - $199 / hr250 - 999New York, NY
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See all 58 projectsInfinum is a comprehensive web development company specializing in full-stack web development, including web design and custom website development, with a strong emphasis on user experience and technology integration. Across their reviews, 83% of clients highlight their exceptional project management and responsiveness, while 67% commend their ability to meet high standards and deliver functional, user-friendly solutions, although some suggest improvements in delivery timelines.
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$50,000+$150 - $199 / hr50 - 249Matlock, England
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See all 18 projectsHuman Made is a web development company highly regarded for its expertise in WordPress, offering full-stack web development, custom website development, and web application development services. With over 90% of reviews expressing satisfaction, clients commend their technical proficiency, responsiveness, and partnership attitude, highlighting their ability to deliver innovative and tailored solutions that align with client goals and values.
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$10,000+$50 - $99 / hr50 - 249Cluj-Napoca, Romania
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See all 78 projectsWOLFPACK DIGITAL is a web development company excelling in front-end development and full-stack web development with a strong emphasis on project management and responsiveness. All reviews highlight their consistent on-time delivery, transparency, and outstanding communication, with 100% positive feedback on project management and responsiveness. Clients appreciate their partnership approach and design talent, often citing the team's seamless integration and adaptability.
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$25,000+$100 - $149 / hr50 - 249Santa Clara, CA
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See all 60 projectsVardot is a web development company specializing in custom website development, front-end development, and web application development. Reviews highlight their responsive communication, technical reliability, and successful project management, with over 85% of feedback being positive. Clients commend Vardot for delivering projects on time and maintaining strong collaboration, resulting in improved user experiences and efficient digital solutions.
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$10,000+$25 - $49 / hr50 - 249Alexandria, Egypt
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See all 22 projectsRunProf LLC is a web development company excelling in Website Development, Web Programming, and Full-Stack Web Development. The company consistently receives high praise for its professionalism, responsiveness, and quality of work, with 100% of reviewers expressing satisfaction with their services. Clients frequently commend their impressive project management skills and solution-oriented approach, with no significant areas for improvement noted.
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$25,000+$50 - $99 / hr10 - 49Wrocław, Poland
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See all 37 projectsNaturaily is a web development company specializing in Website Development, Web Application Development, and Full-Stack Web Development. They have consistently received positive reviews, with approximately 90% of feedback highlighting their technical expertise, collaborative approach, and ability to deliver high-quality, scalable solutions on time. Clients commend Naturaily for their commitment to understanding business objectives and providing innovative, custom website development solutions.
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$25,000+$50 - $99 / hr50 - 249Prague, Czech Republic
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See all 34 projectsOAKS LAB is a full-service web development company specializing in custom website development, including web design, front-end and back-end development, and web application development. The company receives overwhelmingly positive feedback, with over 90% of reviews highlighting their dedication, professionalism, and ability to exceed expectations. Their clients appreciate their expertise in project management and their commitment to acting as true partners, with many emphasizing their exceptional attention to detail and collaborative approach.
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$25,000+$50 - $99 / hr50 - 249Miami, FL
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See all 52 projectsSpaceDev is a web development company specializing in full-stack and custom web application development, including smart contract integration and Web3 solutions. They are highly commended for their professional client communication and adaptability, with 100% of feedback highlighting their timely project delivery and strong alignment with client needs. Common praise includes their adept project management and tailored solutions.
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$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
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See all 37 projectsSigma Software Group is a multifaceted web development company specializing in custom website development, full-stack web development, and web application development. The reviews highlight their strong project management skills, efficient communication, and adaptability to clients' needs. Approximately 90% of the feedback is positive, with frequent praise for their commitment, creativity, and ability to integrate seamlessly with client teams.
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$5,000+< $25 / hr50 - 249Ahmedabad, India
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See all 104 projectsTridhya Tech Limited is a comprehensive web development company specializing in custom website development, web application development, and mobile app development. With a 100% positive feedback rate across reviews, clients commend their professionalism, timely delivery, and effective project management. Approximately 75% of reviews highlight their excellent communication and culture fit, while 50% emphasize their ability to meet budget expectations.
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$10,000+$150 - $199 / hr50 - 249Carlsbad, CA
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See all 126 projectsStorm Brain is a web development company specializing in Website Development, Web Design, and SEO services. With an impressive 100% positive feedback rate, clients consistently praise their professional project management, strategic thinking, and excellent communication. Approximately 70% of reviewers highlight their ability to deliver on time and align with business goals, making them a trusted development partner.
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$25,000+$100 - $149 / hr50 - 249Cypress, CA
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See all 18 projectsOshyn is a distinguished Web Development company recognized for its expertise in Sitecore CMS implementation and custom website development. With consistently positive feedback, 100% of reviewers highlight their reliable project management and technical proficiency. Clients commend Oshyn's ability to deliver complex web solutions, with 30% noting their seamless integration as an extension of internal teams.
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$50,000+$25 - $49 / hr250 - 999Sofia, Bulgaria
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See all 38 projectsDreamix is a web development company specializing in custom web application development, front-end and back-end development, and web design. Throughout their reviews, Dreamix consistently receives praise for their technical proficiency, flexibility, and strong communication, with 100% of reviewers expressing satisfaction with their professionalism and project management. They are commended for meeting deadlines and adapting to changing project requirements efficiently.
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$25,000+$200 - $300 / hr10 - 49Naperville, IL
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See all 89 projectsLLT Group is a web development company specializing in custom website development and web design. They excel in project management, as evidenced by a 100% positive feedback rate on timely communication and responsiveness. Their work is highly regarded for improving user experiences and meeting client expectations, though there are occasional concerns about the SEO execution quality.
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$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
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See all 27 projectsIncora is a web development company specializing in custom web development, front-end and back-end development, and web application development. Their reviews highlight exceptional technical skills, meeting deadlines, and high-quality service, with approximately 95% of feedback being positive. Clients frequently praise their communication, flexibility, alignment with company values, and professionalism in delivering robust web and UI solutions.
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$10,000+$50 - $99 / hr50 - 249Kyiv, Ukraine
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See all 61 projectsDjango Stars is a custom website development company renowned for its expertise in full-stack web development and web application development. The firm consistently receives high praise for its technical excellence, timely delivery, and proactive approach, as evidenced by an overwhelming 100% positive feedback from clients. Reviewers frequently commend their seamless project management and ability to blend functionality with client business objectives.
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$10,000+$25 - $49 / hr250 - 999Kolkata, India
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See all 103 projectsWebskitters is a web development company offering services like Web Programming, Custom Website Development, and Full-Stack Web Development. The overall feedback indicates a generally positive experience, with approximately 85% of clients praising their timely delivery, responsiveness, and professionalism. However, a minority expressed concerns about project delays and quality, highlighting communication issues and incomplete work.
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$10,000+$50 - $99 / hr50 - 249Warszawa, Poland
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See all 40 projectsFireart Studio is a comprehensive web development company specializing in custom website development, web application development, and design services. They are consistently praised for their professional approach, strong communication, and flexibility, with over 85% of reviews highlighting their impressive project management and design capabilities. Clients appreciate their ability to deliver on time, adapt to client needs, and the seamless integration of front-end and back-end development.
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$25,000+$25 - $49 / hr50 - 249Sarasota, FL
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See all 88 projectsAnyforSoft is a web development company specializing in custom website development and full-stack web development solutions, particularly in web application development and web programming. With a 100% positive feedback rate, clients commend AnyforSoft’s expertise in improving system functionality and understanding complex project requirements, as 87% of reviewers mention their ability to deliver projects on time with high-quality execution and attention to client needs.
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$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
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See all 52 projectsNERDZ LAB is a full-stack web development company excelling in a wide range of services, including custom website development, web application development, front-end development, and back-end development. The reviews highlight a 100% positive feedback rate, emphasizing exceptional project management, timely delivery, and outstanding communication. Clients frequently commend their ability to take ownership of projects and ensure high-quality outcomes, with 50% of reviewers specifically noting their proactive communication and responsiveness.
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$50,000+$150 - $199 / hr10 - 49Los Angeles, CA
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See all 37 projectsUrban Insight is a web development company specializing in custom website development, web design, and web application development. Across their reviews, 90% of clients praise their technical expertise, project management, and ability to deliver on time. Approximately 80% highlight their excellent communication and responsiveness, while a minority (10%) suggest minor improvements in project management and design optimization. Overall, Urban Insight is regarded as a reliable partner for digital projects.
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$25,000+$50 - $99 / hr50 - 249L'viv, Ukraine
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See all 57 projectsBinary Studio is a full-stack web development company known for its exceptional project management and technical partnership, providing services such as website development, web application development, and back-end development. They boast a high level of customer satisfaction with 100% of reviewers highlighting their technical expertise, adaptability, and seamless integration as an extension of internal teams. Their consistent delivery of high-quality work and responsiveness has left a lasting positive impression on clients.
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$25,000+$50 - $99 / hr50 - 249Karlín, Czech Republic
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See all 47 projectsAckee is a web development company specializing in custom website development, web application development, and front-end and back-end development. Across their reviews, 100% of clients praised their project management, citing timely deliveries, exceptional flexibility, and proactive communication. Additionally, 90% of reviewers highlighted their professional approach and ability to adapt to changing requirements, making them a reliable partner for complex digital projects.
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$25,000+$25 - $49 / hr1,000 - 9,999Boca Raton, FL
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See all 64 projectsAgileEngine is a comprehensive software development company specializing in Web Development, including both front-end and back-end capabilities, as well as mobile solutions. The majority of reviewers commend AgileEngine for their responsiveness, dedication, and high-quality work, with 100% of feedback highlighting their strong project management and commitment to client satisfaction. Notably, clients appreciate their ability to meet deadlines and deliver within budget, underscoring their value-driven approach.
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$25,000+$50 - $99 / hr50 - 249Dubai, United Arab Emirates
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See all 39 projectsBlink22 is a full-stack web development company offering comprehensive services including web application development, UI/UX design, and backend logic optimization. They receive overwhelmingly positive feedback, with 100% of reviewers highlighting their project management skills, flexibility, and ability to meet deadlines. Clients commend their team for being innovative, adaptable, and excellent communicators, making Blink22 a top choice for complex web development needs.
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$10,000+$50 - $99 / hr50 - 249Tallinn, Estonia
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See all 34 projectsDashbouquet Development is a full-stack web development company offering services such as custom website development, web application development, and both front-end and back-end development. They are highly regarded for their professionalism, agility, and strong project management skills, as reflected in over 90% of reviews. Clients frequently commend their flexibility, ability to meet deadlines, and effective communication. Many reviewers highlight their technical expertise and partnership approach, making them a reliable choice for web development projects.
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$25,000+$25 - $49 / hr250 - 999White Plains, NY
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See all 66 projectsFingent is a versatile technology partner excelling in areas such as custom website development, full-stack web development, and web application development. The company receives overwhelmingly positive feedback, with approximately 85% of reviews highlighting their professionalism, transparent communication, and technical expertise. Clients frequently commend their proactive project management, timely delivery, and ability to integrate seamlessly into existing teams, making them a preferred choice for complex online development projects.
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$5,000+$150 - $199 / hr10 - 49Apex, NC
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See all 25 projectsRoleModel Software is a custom web development company specializing in web application development using technologies like Ruby on Rails. Feedback from clients indicates a high level of satisfaction, with no areas for improvement suggested. Approximately 100% of reviews commend their agile approach, focus on maintainability, and excellent communication. RoleModel Software is noted for its commitment to excellence and strong collaborative efforts.
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$50,000+$50 - $99 / hr50 - 249Kyiv, Ukraine
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See all 28 projectsSevenPro is a versatile web development company that offers a range of services, including full-stack web development, mobile app development, and custom software solutions. Across their reviews, 100% of clients highlight their professionalism, excellent communication, and timely project deliveries. Clients particularly appreciate their ability to integrate seamlessly with teams, showcasing expertise in technologies like React, Node.js, and Agile methodologies.
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$5,000+$100 - $149 / hr10 - 49Toronto, Canada
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See all 15 projectsOrthoplex Solutions is a full-stack web development company specializing in custom website development and web application development. The company consistently received positive feedback, with 100% of reviewers praising their professionalism, responsiveness, and ability to meet tight deadlines. Notably, 86% of reviews highlighted their excellent communication and project management skills. Their expertise in web design and development, as well as their client-focused approach, make them a preferred choice for many businesses.
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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
70% Web Development50% JavaScript30% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
38.7/40.018.8/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
60% Web Development50% JavaScript40% Other -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
38.3/40.018.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Web Development75% JavaScript55% Other -
$5,000+$25 - $49 / hr50 - 249Warszawa, Poland
Ability to deliver
37.5/40.018.6/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$25,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
38.8/40.019/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
40% Web Development60% JavaScript60% Other -
$10,000+$25 - $49 / hr250 - 999Bengaluru, India
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
20% Web Development40% JavaScript80% Other -
$10,000+$50 - $99 / hr50 - 249Amsterdam, Netherlands
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Web Development70% JavaScript70% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
38.5/40.019/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% Other -
$25,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
39.1/40.019.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
30% Web Development50% 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 -
$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 -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
38.9/40.019.4/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
30% Web Development21% JavaScript70% 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 -
$10,000+$25 - $49 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development15% JavaScript70% Other -
$10,000+$50 - $99 / hr250 - 999Marlborough, MA
Ability to deliver
38.7/40.019/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
25% Web Development25% JavaScript75% 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 -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
38.8/40.018.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% 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 -
$25,000+< $25 / hr250 - 999Ahmedabad, India
Ability to deliver
39.7/40.020/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
45% Web Development10% JavaScript55% Other -
$50,000+$150 - $199 / hr250 - 999Irvine, CA
Ability to deliver
36.1/40.016.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
30% Web Development30% JavaScript70% Other -
$5,000+$50 - $99 / hr10 - 49Poznań, Poland
Ability to deliver
37.1/40.017.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development60% JavaScript50% 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 -
$25,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
38.1/40.018.8/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
40% Web Development70% JavaScript60% 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+$150 - $199 / hr250 - 999New York, NY
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Web Development20% JavaScript80% Other -
$50,000+$150 - $199 / hr50 - 249Matlock, England
Ability to deliver
37.2/40.017.4/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
36.7/40.017.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$5,000+$25 - $49 / hr50 - 249Hong Kong, Hong Kong
Ability to deliver
37.8/40.018.4/20 Reviews10/10 Clients & Experience9.4/10 Market PresenceService focus
25% Web Development60% JavaScript75% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
37.1/40.017.2/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% Other -
$10,000+$50 - $99 / hr10 - 49Montevideo, Uruguay
Ability to deliver
37.7/40.018.8/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
40% Web Development50% JavaScript60% 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.