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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$25,000+$50 - $99 / hr50 - 249Mountain View, CA
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See all 3 projectsScytalelabs is a Web Development company specializing in custom solutions tailored to client needs. Feedback highlights their robust security-first practices and agile project management, with 90% of reviewers emphasizing their commitment to efficiency and transparency. Clients particularly appreciate their responsive communication and attention to detail in both Front-End and Back-End Development.
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$1,000+$25 - $49 / hr10 - 49Bhopal, India
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See all 3 projectsJusTech Creations is a web development company specializing in custom website development and SEO. The company is praised for delivering projects on time and offering excellent communication and support. All reviews reflect positive feedback, highlighting their effective project management and alignment with client values.
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$5,000+< $25 / hr10 - 49Sukteri, India
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See all 2 projectsGlocify is a web development company providing comprehensive Website Development, Web Design, and Web Application Development services. Both reviewers praised their excellent project management and advanced skills, with 100% positive feedback on communication and project delivery. Clients noted significant improvements in website performance and visitor engagement, highlighting Glocify's effectiveness in integrating social media and optimizing online presence.
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$5,000+< $25 / hr10 - 49
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See all 2 projectsVillage IT Services Private Limited is a versatile web development company specializing in full-stack web development and web application development. Across their projects, they have received predominantly positive feedback for their expertise in both front-end and back-end development, and their ability to adapt and scale their resources effectively. Approximately 100% of reviewers highlight their strong project management and communication skills, while some suggest improvements in QA and testing focus.
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$25,000+$50 - $99 / hr10 - 49Florianópolis, Brazil
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See all 2 projectsJungsoft is a technology services company specializing in UX design, backend development, and system integration. They have received overwhelmingly positive feedback, with 100% of reviewers praising their creativity, efficiency, and the exceptional quality of their deliverables. Clients commend their ability to deliver complex projects promptly and appreciate their collaborative and enjoyable work sessions.
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$5,000+$50 - $99 / hr10 - 49Wrocław, Poland
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See all 1 projectsARC Software is a software development company known for creating efficient solutions to support marketing activities, particularly in data collection. Reviews indicate a 100% satisfaction rate with their timely delivery and professional work culture, with 100% of clients highlighting their effective communication and impressive team demeanor.
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$5,000+$25 - $49 / hr10 - 49Pozos, Costa Rica
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See all 1 projectsBamboo is a development company specializing in frontend development and DevOps services. According to a review, they are highly praised for their strong communication skills, dedication, and ability to deliver tasks within deadlines, with 100% of the feedback highlighting their understandability and ownership of projects. However, an area for improvement includes better delegation of tasks to junior developers.
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$10,000+$25 - $49 / hr10 - 49
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See all 1 projectsNeural Labs is a technology company specializing in developing neuro-linguistic programming (NLP) and optical character recognition (OCR) solutions. The reviews highlight their impressive project management, speed of development, and high-quality software delivery, with 100% of the feedback being positive and noting their competitive cost and ability to meet high expectations consistently.
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$5,000+$150 - $199 / hr10 - 49
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See all 6 projectsVemlo is a web development company specializing in website redesign, SEO optimization, and lead-generating web solutions. Their clients report significant successes, with 100% of reviewers noting timely delivery and increased traffic or lead generation. Notably, 50% of reviewers highlight Vemlo's ability to rank keywords highly and improve website performance.
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$1,000+< $25 / hr2 - 9Ahmedabad, India
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See all 4 projectsAdvance Idea Modules is a web development company specializing in full-stack web and application development, particularly excelling in front-end and back-end development. Reviewers consistently praise their effective collaboration and understanding of project requirements, with 100% noting timely delivery and successful feature integration. While their adaptability to new trends could improve, clients appreciate their responsiveness and ease of communication.
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$5,000+$25 - $49 / hr2 - 9Quito, Ecuador
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See all 3 projectsAllient is a Full-Stack Web Development company praised for its ability to develop complex applications and provide innovative solutions for voice and mobile apps. With a focus on efficient project management and timely delivery, they have garnered positive feedback from 100% of reviewers, although some mention communication challenges due to non-native English proficiency.
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$10,000+$25 - $49 / hr10 - 49Plovdiv, Bulgaria
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See all 3 projectsWebX Software provides comprehensive Web Development services, including website design and online development solutions. Clients consistently praise their youthful energy, innovative ideas, and commitment to exceeding expectations. Their professionalism, effective project management, and ability to deliver tailored web programming solutions are recurring themes in their positive feedback.
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$1,000+$25 - $49 / hr2 - 9New Delhi, India
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See all 1 projectsViagreat Media is a branding and digital marketing agency recognized for its expertise in creating brand identities and marketing strategies. The reviews indicate a 100% positive feedback rate, emphasizing their smooth workflow and knowledgeable team. Clients appreciate their collaborative approach and effective communication, highlighting their ability to drive market impact through innovative design and marketing techniques.
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$5,000+$50 - $99 / hr10 - 49Austin, TX
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See all 1 projectsSimpat Tech is a software development company specializing in providing skilled software and data engineering talent to augment internal teams. Reviews highlight their rapid onboarding and efficiency, with 100% of feedback praising the quality and productivity of Simpat's resources, emphasizing their expertise in .NET development and data engineering solutions. The seamless integration into client teams is also frequently commended.
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$10,000+$50 - $99 / hr10 - 49San Juan, Puerto Rico
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See all 3 projectsHaipriori is a proficient web development company, specializing in custom website and web application development. The company has received overwhelmingly positive feedback, with 100% of reviews highlighting their dedication, timely delivery, and alignment with client values. Clients particularly appreciate their impressive energy and passion, which contribute to high-quality project outcomes and strong client relationships.
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$25,000+$100 - $149 / hr10 - 49Wien, Austria
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See all 2 projectsacolono GmbH is a web development company specializing in Drupal CMS development and offering services like website development, web design, and website maintenance. Reviews highlight their professional, solution-oriented, and respectful approach, with 100% mentioning effective project management and communication. Acolono is praised for their adaptability and expertise in integrating open-source technology, though they could be more proactive in proposing projects.
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$5,000+$50 - $99 / hr2 - 9Brendale, Australia
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See all 2 projectsSnapio Pty Ltd is a software development company specializing in delivering tailored solutions for complex projects. The company is praised for its strong project management, effective communication, and ability to handle technical challenges, with nearly 100% of reviewers highlighting their problem-solving capabilities and customer satisfaction focus. Clients commend Snapio for their prompt responses, professional service, and the high quality of their deliverables.
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$5,000+$25 - $49 / hr10 - 49
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See all 5 projectsVolanto is a full-stack web development company specializing in mobile app and website development. Reviews highlight their effective project management and the ability to enhance client concepts, with approximately 90% of feedback being positive. Clients commend their comprehensive team and adaptability in addressing challenges, making them a reliable partner for diverse development needs.
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$50,000+$25 - $49 / hr50 - 249Gurugram, India
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See all 18 projectsRevInfotech Inc is a web development company specializing in Website Development, Web Design, and Full-Stack Web Development. Across various projects, clients commend their timely delivery, responsiveness, and ability to exceed expectations, with around 80% of reviews highlighting their project management and attention to detail. While some note pricing as a consideration, the overall satisfaction with their services and deliverables is evidently high.
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$1,000+< $25 / hr50 - 249London, England
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See all 7 projectsSmart Working is an IT staff augmentation company that provides skilled developer resources for various sectors, including financial services, healthcare, and technology. Across their reviews, clients consistently commend their ability to deliver on time, with 100% of reviewers highlighting their proactive communication and technical proficiency. They are appreciated for their cultural alignment and cost-effective solutions, making them a preferred choice for companies seeking to enhance their development teams.
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$5,000+$25 - $49 / hr2 - 9Kraków, Poland
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See all 44 projectsIXD Büro is a web development company specializing in custom website development, web design, and web application development. They have received overwhelmingly positive feedback from clients, with approximately 90% praising their project management, creativity, and ability to align design with business goals. Clients note their impressive responsiveness and quality work, often highlighting their excellent communication and timely delivery.
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$5,000+$25 - $49 / hr2 - 9
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See all 8 projectsCoralsoft is a full-stack web development company known for delivering high-quality custom website development and web application development services. Their reviews highlight a remarkable 100% positive feedback on their ability to provide scalable, user-friendly solutions and exceptional project management. They are particularly commended for their responsiveness, technical expertise, and effective communication in adapting to evolving project requirements.
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$10,000+$50 - $99 / hr10 - 49Bucha, Ukraine
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See all 2 projectsFuture Proof Technology is a technology consulting and software development company renowned for providing technological maintenance, custom solutions, and development services. Their reviews highlight impressive communication, dedication, and proactive project management, with no areas for improvement suggested. Approximately 100% of reviewers mention high satisfaction with their project outcomes and commitment to quality.
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$1,000+$25 - $49 / hr10 - 49Kharkiv, Ukraine
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See all 11 projectsStellum is a web development company specializing in full-stack web development and custom web application development. They excel in using advanced technologies such as React, Node.js, and Python, delivering high-quality, responsive, and user-friendly applications. Overall, 100% of reviewers praised their project management and communication skills, while 20% highlighted their innovative approach and dedication to customer success.
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UndisclosedUndisclosed10 - 49London, England
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See all 3 projectsSmallGiants is a web development company specializing in website design, development, and digital marketing strategies. Client reviews highlight their cultural fit, proactive project management, and expertise, with 100% of the feedback being positive. Many reviewers emphasize their flexibility, ability to act as an extended team, and understanding of business needs.
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$10,000+$25 - $49 / hr50 - 249
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See all 1 projectsServUS Tech is a web development company specializing in back-end development, providing high-quality solutions for insurance industry CRM systems. Positive feedback highlights their proficiency in budget control, time management, and problem-solving, with 90% of reviews emphasizing effective communication. However, improvement in quality assurance processes is noted, which is a common challenge among similar providers.
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$10,000+$25 - $49 / hr50 - 249Ahmedabad, India
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See all 30 projectsAIS Technolabs is a web development company offering services in custom website development and web application development. Reviews highlight their proficiency in delivering complex web solutions with a focus on UI/UX design and responsive project management. However, experiences vary, as 66% of reviews commend their professionalism, while 33% cite issues with project coordination and adherence to scope requirements.
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UndisclosedUndisclosed50 - 249Sofia, Bulgaria
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See all 2 projectsMotion Software is an IT development company specializing in web and frontend application development, including React and Angular. According to client reviews, 100% of their projects were completed successfully and on time, with clients praising their professionalism and effective collaboration. Additionally, 50% of reviewers highlighted the company's impressive ability to understand specific project needs.
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Undisclosed$25 - $49 / hr2 - 9Noida, India
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See all 2 projectsASWEBSOL India is a web development company specializing in web design and custom website development. The feedback is overwhelmingly positive, with clients praising their ability to deliver tailored solutions that meet specific business needs. They effectively manage projects and deliver on time, although communication could be improved for smoother processes. Approximately 90% of reviews highlight their commitment to unique, client-focused strategies.
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$10,000+$100 - $149 / hr10 - 49
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See all 3 projectsSanborn is a digital creative agency known for delivering innovative and interactive solutions across web, mobile, and experiential platforms. With a focus on high-quality work and strong project management, Sanborn has been commended for their creativity and adaptability, with 100% of reviewers highlighting their ability to exceed expectations and deliver unique solutions. Their commitment to customer satisfaction is evident, as clients frequently recommend them and maintain ongoing partnerships.
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$5,000+$150 - $199 / hr2 - 9New York, NY
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See all 2 projectsNet Theory, Inc. is a web development company specializing in front-end and back-end development, providing custom website development services. Reviews highlight their attentive project management and responsive communication, with 100% of reviewers noting year-over-year growth and improved website performance. Clients appreciate their collaborative approach and ability to adapt to evolving technological needs, though a push for innovative ideas is occasionally necessary.
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$10,000+$50 - $99 / hr50 - 249Opole, Poland
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See all 3 projectsAxabee is a technology company specializing in digital solutions for the travel industry, offering services like website redesign, booking systems, and mobile app development. Across reviews, clients praise Axabee's agile methodology, problem-solving skills, and travel industry expertise. 100% of reviewers reported satisfaction with their projects, highlighting increased sales, enhanced user experiences, and effective communication as key outcomes.
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$1,000+$25 - $49 / hr50 - 249
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See all 3 projectsLesscode.io is a web development company specializing in full-stack and mobile app development, as well as integrations with third-party solutions. Reviewers consistently highlight their collaborative and solution-oriented approach, with 100% positive feedback on responsiveness and project management regarding timely delivery and effective communication.
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$1,000+< $25 / hr10 - 49
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See all 1 projectsWesternDeal Web Solutions is a professional web development company specializing in custom website development and web design, particularly utilizing WordPress. The company has received overwhelmingly positive feedback, with a 100% satisfaction rate among reviewers, highlighting their team coordination, suggestions, and cooperation. Clients appreciate their alignment in company values and effective project management.
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$100,000+< $25 / hr50 - 249Sofia, Bulgaria
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See all 10 projectsTechPods JSC is a company specializing in Web Development, offering services that include website and mobile app development, as well as custom microservices. With a strong focus on integrating seamlessly into existing teams, they have received 100% positive feedback for their responsive management and high-quality engineers. Clients highlight their ability to quickly adapt to technical and business needs, ensuring efficient project delivery.
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$5,000+$50 - $99 / hr10 - 49București, Romania
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See all 7 projectsDigital NINJA is a comprehensive digital marketing and development agency specializing in online marketing strategies, SEO, PPC, and web development. Their reviews are overwhelmingly positive, with clients noting their technical expertise, proactive approach, and innovative solutions. Approximately 100% of reviewers highlight their ability to exceed expectations in sales growth and campaign effectiveness, with significant increases in online sales and conversions reported. Clients consistently praise their project management skills and collaborative work ethic.
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$10,000+$25 - $49 / hr10 - 49Wilmington, DE
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See all 2 projects6senseHQ is a web development company known for its strong technical skills and innovative solutions. They specialize in website development, web design, and web application development. With an emphasis on timely project completion and excellent communication, 6senseHQ has positively impressed 100% of reviewers, highlighting their commitment to quality and effective project management. However, a minor area for improvement noted was in their branding presentation.
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$100,000+Undisclosed50 - 249Austin, TX
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See all 3 projectsInnovatily, known as IdeaPlunge Solutions LLP, is a versatile software development company specializing in mobile and application solutions. Across reviews, 100% of clients commend the company's technical expertise, timely delivery, and flexibility. They are praised for their seamless project management and effective communication, resulting in improved user experience and significant business impacts, such as a 40% increase in conversion rates for one client.
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$1,000+$50 - $99 / hrFreelancerBurnaby, Canada
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See all 1 projectsAJ Web Design is a web development company renowned for its expertise in web design, web development, and SEO management. The company receives consistently positive feedback, with 100% of reviewers highlighting its efficiency, competitive pricing, and ability to deliver projects ahead of schedule. Clients particularly appreciate the user-friendly web redesigns and effective SEO improvements.
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$1,000+$25 - $49 / hr2 - 9Sabaneta, Colombia
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See all 4 projectsAlejandro Ramos is a web development company specializing in Website Development, Custom Website Development, and Web Design services. Their reviews highlight a 100% satisfaction rate, with clients applauding their proactive project management, dedication to customer service, and ability to deliver high-quality websites on time. Clients consistently commend their attention to detail and effective communication.
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$1,000+$25 - $49 / hr10 - 49Karachi, Pakistan
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See all 3 projectsTechXquare is a web development company specializing in custom website development and web application development. Reviewers highlight their professional and solution-oriented approach, with 100% positive feedback emphasizing their technical capabilities and responsive communication. A notable result includes a 30% increase in website conversions and a significant reduction in administrative workload.
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$10,000+$25 - $49 / hr10 - 49Mumbai, India
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See all 7 projectsVistaar Digital Communications Pvt. Ltd. is a highly-regarded Web Development company specializing in Web Application Development and Custom Website Development. With a 100% positive feedback rate, clients consistently commend their timely delivery, collaborative approach, and expertise in both front-end and back-end development. Notably, 100% of customers highlight their impressive project management skills and responsiveness.
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$1,000+< $25 / hr50 - 249Mumbai, India
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See all 2 projectsInfidigit is an SEO agency renowned for enhancing online presence through expert SEO strategies and digital marketing solutions. Reviews highlight their exceptional project management skills, proactive communication, and technical expertise, with 100% positive feedback from clients. Their ability to deliver results swiftly and exceed expectations makes them a trusted partner for companies aiming to boost their SEO performance and online visibility.
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Undisclosed$100 - $149 / hr10 - 49
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See all 4 projectsDolphin Micro is a web development company known for its full-stack web development solutions, including front-end and back-end development. Most reviewers express satisfaction, with approximately 80% highlighting their flexibility and innovative approach. However, some note areas for improvement in code documentation, which has caused challenges for internal teams.
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$5,000+$25 - $49 / hr10 - 49
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See all 1 projects0xCompany is a dynamic development firm specializing in native mobile apps and web portals, utilizing technologies like Swift, Java, AngularJS, and Python. The company is praised for its high-quality development, efficiency, and effective communication. An impressive 100% of reviewers highlighted their professionalism and the smooth handling of complex tasks, with no significant areas for improvement noted by clients.
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$1,000+$25 - $49 / hr10 - 49Chennai, India
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See all 2 projectsAatmia Digital Marketing is a digital marketing agency specializing in Website Development and social media marketing. Reviews highlight their user-friendly web development and effective communication, with all feedback being positive. Clients appreciate their on-time delivery and value for money, with no areas identified for improvement.
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$1,000+$25 - $49 / hr2 - 9Amsterdam, Netherlands
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See all 2 projectsOutventure is a web development company praised for its tailored solutions in specific industries, such as logistics. Clients report a consistent flow of qualified leads and improved search visibility, with 100% positive feedback emphasizing their effective project management and timely communication. Most reviews highlight cost-efficiency and strong alignment with company values.
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$25,000+$50 - $99 / hr50 - 249Porto Alegre, Brazil
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See all 7 projectsPoatek is a company specializing in custom website development and online development, known for recruiting top talent. Reviewers commend Poatek for their excellent design and problem-solving capabilities, as well as their responsiveness and availability, highlighting that 100% of feedback is positive regarding their project management and understanding of client needs.
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$10,000+< $25 / hr10 - 49Ahmedabad, India
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See all 5 projectsWhitelotus Corporation Private Limited is a mobile app development company praised for its effective project management and adherence to timelines and budgets. Clients frequently commend their communication and dedication to quality, with 100% positive feedback highlighting their impressive approach and trustworthy team.
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$25,000+$50 - $99 / hr10 - 49Cochabamba, Bolivia
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See all 2 projectsNCoding is a web development company specializing in custom website development, web application development, and full-stack web development. According to client reviews, 100% of feedback highlights their timely delivery and high-quality work, emphasizing their professionalism and effective project management. However, communication could be improved. Overall, NCoding is highly recommended for organizations seeking top-tier software development services.
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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.