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 87 projectsDigis, a Fiverr company (NYSE: FVRR), is a web development firm offering comprehensive solutions in custom website development, full-stack web development, and web application development. With 100% positive feedback, clients commend their seamless integration into teams, high-quality deliverables, and responsiveness. Approximately 80% of reviews highlight their effective project management and communication, emphasizing their reliability and expertise in meeting project milestones.
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$10,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 19 projectsEvergreen is a versatile web development company specializing in custom website development and full-stack web development services. The company consistently receives positive feedback for its project management and technical expertise, with over 85% of clients praising their problem-solving skills and ability to handle complex projects. However, about 15% of reviewers suggest improvements in documentation and testing processes.
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$50,000+$150 - $199 / hr10 - 49
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See all 1 projectsEvus Technologies is a software development company specializing in creating scalable, user-friendly systems for complex projects, particularly for government agencies and community service providers. Review feedback is overwhelmingly positive, highlighting their ability to simplify complex problems and align with clients' missions. Clients appreciate their commitment and integration into projects, with mentions of their supportive approach and innovation.
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$5,000+$100 - $149 / hr2 - 9
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See all 4 projectsAutonomous Intelligence Development is a company specializing in artificial intelligence and machine learning solutions. Reviews highlight their professional approach, technical expertise, and effective communication, with 100% of clients expressing satisfaction with timely and high-quality delivery. Additionally, clients appreciate their ethical and human-centered values, aligning closely with project needs.
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$50,000+$100 - $149 / hr50 - 249Berlin, Germany
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See all 1 projectsSPRYLAB is a software development company renowned for its strategic advisory and development expertise, particularly in creating Software as a Service solutions. The company consistently receives positive feedback, with 100% of reviewers praising their collaborative approach, timely delivery, and understanding of industry-specific needs. Clients highlight SPRYLAB's commitment to shared success and innovative, customer-focused development processes.
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$1,000+< $25 / hr10 - 49Odesa, Ukraine
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See all 3 projectsSynergy Technical Group is a web development company specializing in WordPress development and website support. They are praised for their technical expertise, proactive communication, and ability to deliver projects on time. Reviewers highlight their modern development techniques and commitment to security, with 100% positive feedback on communication and technical capabilities.
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$25,000+$50 - $99 / hr10 - 49Islamabad, Pakistan
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See all 3 projectsHireNinja is a web development company that excels in full-stack development, providing both front-end and back-end services. Their team, led by a highly communicative and dedicated manager, Asif, delivers stable and optimized digital solutions, producing a strong return on investment. Approximately 80% of the feedback highlights their commitment to client satisfaction and project management efficiency.
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$5,000+$50 - $99 / hr10 - 49Denver, CO
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See all 3 projectsSoftProdukt is a web development company specializing in full-stack and custom website development. Reviewers commend their ability to seamlessly integrate complex systems and deliver projects efficiently, with approximately 90% of feedback highlighting their project management skills and technical expertise. Clients value their ability to work with existing code, with SoftProdukt often completing projects at a fraction of the estimated cost.
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$5,000+$100 - $149 / hr10 - 49Sofia, Bulgaria
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See all 2 projectsSmarch is a web development company specializing in custom website and AI solutions. Their outstanding service and efficiency are frequently praised by clients, with 100% of reviewers highlighting the speed of execution. Smarch's high-quality work has resulted in significant business benefits, including a 10% increase in average order value for one client.
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UndisclosedUndisclosed10 - 49
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See all 11 projects5Blue Software is a web development company renowned for its excellence in custom website and full-stack development, providing tailored solutions for diverse needs. Reviews reveal consistent satisfaction, with 100% of clients appreciating their strong technical expertise, communication, and responsiveness, leading to successful project outcomes and high client retention. Their ability to deliver on time and within budget is frequently lauded.
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$25,000+$50 - $99 / hr10 - 49London, England
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See all 7 projectsNordstone is a mobile app development company recognized for its proficiency in creating diverse applications across multiple platforms. Reviews indicate a mixed perception, with approximately 67% of reviewers expressing satisfaction with their ability to meet complex project requirements, adhere to timelines, and maintain clear communication. However, one review highlighted a significant failure in delivering a functional product, suggesting potential variability in project outcomes.
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$1,000+< $25 / hr10 - 49Surat, India
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See all 5 projectsScriptus Solutions is a web development company specializing in website and mobile app development. Their services are highly regarded, with 100% of reviewers praising their effective project management and personable approach. Clients appreciate their thoroughness and adaptability, even across time zones.
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$1,000+$25 - $49 / hr10 - 49
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See all 3 projectsLEZ Solutions offers services in Website Development, Web Design, and monthly maintenance, specializing in SEO optimization and site updates. Reviewers consistently commend their punctuality, precise project management, and exceptional ability to bring client visions to life. Clients appreciate the clean, navigable websites and responsive communication.
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$1,000+< $25 / hr10 - 49Gondal, India
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See all 3 projectsJMS Web Solution is a web development company that specializes in custom website development and online development services. They have consistently received positive feedback, with clients noting their ability to effectively implement ideas and deliver quality work in a timely manner. Approximately 100% of reviewers highlight their excellent communication and project management skills.
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$5,000+$25 - $49 / hr10 - 49Białystok, Poland
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See all 1 projectsAbyron is a web development company specializing in creating custom web systems to automate processes for financial institutions. The firm is praised for its effective communication, technical skills, and ability to deliver projects on time. Notably, 100% of reviewers highlight their impressive communication and technical abilities.
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$1,000+< $25 / hr10 - 49Jaipur, India
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See all 7 projectsAcentria Technologies (P) Ltd is primarily a Web Development company offering services such as Website Development, Web Application Development, and Full-Stack Web Development. The overall feedback is highly positive, with clients praising their strong project management and timely communication. Approximately 90% of reviewers highlight their professionalism and client-focused approach, though some suggest enhancing transparency and exploring more technologies.
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$5,000+$25 - $49 / hr2 - 9
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See all 2 projectsLetsync Tech is a web development company offering Custom Website Development, Web Application Development, and UI/UX Design services. They received 100% positive feedback, with clients praising their strong project management, deep technical expertise, and commitment to quality. Reviewers consistently highlight their client-centric approach and exceptional design capabilities.
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$1,000+$25 - $49 / hr10 - 49Lahore, Pakistan
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See all 9 projectsThe Web Hunters is a proficient web development company offering comprehensive services, including website development, API integration, and site maintenance. With 100% positive feedback, clients commend their expertise, professionalism, and reliability. Their commitment to delivering high-quality, scalable solutions and effective project management makes them a highly recommended choice for web development projects.
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$10,000+$25 - $49 / hr10 - 49Zagreb, Croatia
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See all 1 projectsWebsolutions Agency is a web development company specializing in custom website development, full-stack web development, and integration with third-party services. They have received predominantly positive feedback, with clients praising their flexibility and commitment to adapting to user needs. Approximately 80% of reviewers highlight their adaptability and collaborative approach, although there is a noted suggestion for improved resource planning and code verification.
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$5,000+$25 - $49 / hr2 - 9Resistencia, Argentina
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See all 3 projectsDevactory is a web development company specializing in full-stack web development, custom website development, and web application development. They consistently receive positive feedback, with 100% of reviewers noting their responsiveness, ability to meet deadlines, and strong project management skills. Clients commend their expertise in front-end development and seamless integration with existing teams.
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$1,000+< $25 / hr2 - 9
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See all 1 projectsGetpromo, a web development company, offers a spectrum of services including website design, SEO, and content optimization. Reviews highlight their effective project management and innovative strategies, with 100% positive feedback regarding their responsiveness and commitment to customer satisfaction. Notably, 100% of reviewers commend their ability to integrate cutting-edge solutions, though some suggest enhanced reporting frequency.
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$1,000+$25 - $49 / hr10 - 49Ciudad Obregón, Mexico
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See all 1 projectsSahuaro Labs is a web development company known for its responsive and timely delivery of high-quality work, particularly in CMS integration and UI/UX design. All their reviews are positive, highlighting the impressive speed and quality of their deliverables, with 100% of reviewers noting their responsiveness and project management skills.
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$25,000+$25 - $49 / hr2 - 9Budapest, Hungary
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See all 3 projectsDeverest Software is a custom software development company specializing in web-based solutions and mobile app development for iOS and Android. Across reviews, 100% of clients commend their problem-solving skills and effective communication. Clients appreciate their willingness to partner deeply and their ability to integrate seamlessly into teams, although a minority (33%) suggest the addition of a mobile application designer.
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$10,000+$50 - $99 / hr10 - 49Cluj-Napoca, Romania
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See all 7 projectsLuminos Software is a specialized Web Development company that excels in delivering high-quality web and mobile solutions, particularly in UX/UI design and Web Application Development. The firm has received overwhelmingly positive feedback, with clients praising its excellent communication, responsiveness, and ability to deliver complex projects on time. Approximately 100% of reviewers highlight Luminos Software's professionalism and flexibility, ensuring successful project outcomes and client satisfaction.
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Undisclosed$50 - $99 / hr2 - 9
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See all 4 projectsDino Elements is a web development company specializing in website development and SEO. Based on the review provided, 100% of the feedback is positive, highlighting their speed and effective communication. The company successfully completed a website project, meeting deadlines and maintaining responsiveness, with no suggested areas for improvement.
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$10,000+$50 - $99 / hr10 - 49Sumy, Ukraine
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See all 16 projectsValtorian is a web development company with expertise in website development, custom website development, and web application development. Their reviews reveal a strong emphasis on timely delivery, high-quality outcomes, and excellent communication, with 100% of reviewers highlighting their professionalism and responsiveness. Clients appreciate their customer orientation and execution speed, although some suggest improvements in offering independent design proposals.
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$5,000+$25 - $49 / hr2 - 9Dhaka, Bangladesh
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See all 1 projectsWevloper is a web development company specializing in custom website development and web design. The reviews highlight their effective project management and timely delivery, with 100% of clients noting their attentiveness to client needs and impressive UI design approach. However, some suggest that reducing UI design time could enhance their efficiency.
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$25,000+Undisclosed10 - 49São Paulo, Brazil
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See all 7 projectsUnvoid is a web development company specializing in custom website development and offering full-stack web development services. Their reviews highlight a 100% positive feedback rate, showcasing their expertise in seamless team integration and responsiveness. Clients commend their ability to quickly enhance engineering capacity, maintain high-quality standards, and implement an efficient task-based pricing model that aligns with client needs.
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$10,000+$50 - $99 / hr2 - 9Dubai, United Arab Emirates
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See all 5 projectsQuadratic Digital is a web development company specializing in custom website development and full-stack web development services. They consistently receive positive feedback, with 100% of reviewers highlighting their exceptional project management skills, responsiveness, and ability to handle complex tasks efficiently. Their work often exceeds expectations, with significant mentions of their proactive approach and alignment with client values.
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$1,000+$50 - $99 / hr10 - 49Thenhipalam, India
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See all 5 projectsMidnay is a web development company specializing in services such as Website Development, Web Design, and Web Programming. With a focus on creating dynamic and functional websites, 100% of the reviewers praised their efficiency and professionalism. Clients highlighted their impressive project management skills, ability to meet deadlines, and excellent communication throughout the development process.
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$5,000+< $25 / hr10 - 49Ahmedabad, India
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See all 5 projects3i webexperts pvt ltd is a web development company specializing in custom website development, web application development, and CRM systems. With an emphasis on delivering high-quality work, 100% of the feedback is positive, praising their excellent project management, efficiency, and responsiveness. They successfully execute tasks such as SEO optimization, custom app development, and website performance enhancement, consistently meeting client expectations.
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$5,000+$50 - $99 / hr2 - 9Sandy, UT
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See all 2 projectsNeddaxs LLC is a web development company specializing in custom website development and web application development. They have received overwhelmingly positive feedback, with clients praising their technical expertise and responsive project management. Notably, 100% of reviewers commend their ability to adapt to new technologies and their impressive work ethic.
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$1,000+Undisclosed10 - 49Tallinn, Estonia
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See all 2 projectsCatapult Labs is a software development company specializing in logistics, supply chain platforms, and energy-related software solutions. Reviews highlight their strong project management skills and ability to deliver high-quality results on time, with 100% of reviewers noting their impressive development capabilities. While clients appreciate their agility and commitment, some suggest exploring more innovative ideas collaboratively.
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$5,000+$25 - $49 / hr10 - 49
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See all 9 projectsCollective Design Agency is a web development company specializing in custom website and web application development, offering services including web design, UX consultation, and multi-language support. The agency has received varied feedback: 67% of the reviews highlight their creativity and technical precision, while 33% mention areas for improvement, such as responsiveness and project completion timelines.
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Undisclosed$25 - $49 / hr10 - 49Prishtinë, Kosovo
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See all 1 projectsTenton is a web development company specializing in web design and full-stack web development, delivering custom website solutions. They received overwhelmingly positive feedback, with clients highlighting their effective project management, innovative ideas, and user-centric approach. Their positive energy and ability to meet deadlines consistently impressed clients, ensuring a highly satisfactory collaboration experience.
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$100,000+$150 - $199 / hr10 - 49
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See all 3 projectsSaeloun is a full-stack web development company highly praised for its expertise in web application development and custom website development. Reviewers highlight their ability to deliver high-quality features on time, with 100% of feedback emphasizing their technical competence and impactful contributions equivalent to top-tier engineering leadership.
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$5,000+$25 - $49 / hr2 - 9Vila Verde, Portugal
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See all 3 projects4DEVCODING is a web application development company specializing in custom solutions like web apps and ERP-type software with ongoing maintenance. Their reviews highlight a 100% positive feedback rate, emphasizing their impact on streamlining processes, flexibility, and cost-effectiveness, although a more focused implementation approach could enhance their efficiency further.
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$1,000+< $25 / hr50 - 249
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See all 1 projectsObservance Solutions Pvt Ltd is a technology solutions company specializing in development and manual testing services. The company consistently meets deadlines and budget requirements, demonstrating good technical expertise and prompt responsiveness. Positive feedback is unanimous, with 100% of reviewers highlighting their accountability and impressive communication skills.
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$75,000+$150 - $199 / hr10 - 49
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See all 9 projectsR&Y Labs is a versatile technology and development consultancy specializing in user experience design, mobile and web app development, and digital media streaming solutions. The reviews reveal a highly positive client experience, with 100% of feedback highlighting their professionalism, cost-effectiveness, and commitment to project success. Clients commend their ability to meet deadlines and their collaborative approach, with many appreciating their alignment with client objectives and effective project management.
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$1,000+$100 - $149 / hr2 - 9Cincinnati, OH
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See all 13 projectsAppWT LLC ™ (Digital Marketing & Design) is a versatile web development company specializing in custom website development, SEO, and digital marketing services. With a strong emphasis on client communication and tailored solutions, 100% of reviewers highlight their timely delivery and outstanding project management. The company is praised for its personalized approach and budget-friendly pricing, with no negative feedback reported across reviews.
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$1,000+< $25 / hr10 - 49Kathmandu, Nepal
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See all 1 projectsTruemark Technology is a comprehensive digital marketing agency specializing in content creation, content marketing, and SEO optimization. The feedback from their clients is overwhelmingly positive, with multiple reviews praising their dedication, deliverability, and efficient communication. Impressively, 100% of reviewers highlight their ability to meet tight deadlines consistently, making them a reliable partner for digital projects.
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$1,000+Undisclosed2 - 9Sioux Falls, SD
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See all 4 projectsJax Digital is a web development company specializing in custom website development and enhancing online presence. With 100% positive feedback, clients commend their expertise in web and back-end development, effective project management, and excellent customer service. Notably, 67% of reviewers highlight their responsiveness and ability to meet unique design and functionality needs.
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$5,000+$25 - $49 / hr2 - 9Montevideo, Uruguay
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See all 2 projectsMatea Social is a web development company specializing in Web Design and Custom Website Development. They are praised for their creativity, solution-oriented thinking, and strong execution skills. With 100% positive feedback in reviews, clients commend their professionalism, responsiveness, and capacity to capture and implement ideas effectively. Their commitment to social development projects in Uruguay also sets them apart.
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$5,000+$50 - $99 / hr2 - 9München, Germany
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See all 1 projectsStrivals is a web development company specializing in custom website development, offering services such as front-end and back-end development. They have received 100% positive feedback, with clients praising their high-performance website development and seamless communication. Notably, 100% of reviewers highlight their ability to exceed expectations through efficient project delivery and ongoing support.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 5 projectscodExalters Techlabs is a full-stack web development company with a strong emphasis on app and website development. They are praised for delivering projects on time and their impressive attention to detail, with 100% of reviewers highlighting their excellent communication and value for cost. Additionally, clients noted their ability to adapt and expand project scopes effectively.
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$1,000+$50 - $99 / hr2 - 9Los Angeles, CA
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See all 5 projectsPhoenix Road Creative is a web development company specializing in custom website development and web design. Their reviews reflect a strong "can do" attitude, with 100% positive feedback highlighting their efficiency, timeliness, and added value through personalized solutions. Clients appreciate their flexibility, easy maintenance solutions, and the ability to deliver high-quality outcomes that meet specific client needs.
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$25,000+$50 - $99 / hr10 - 49Los Angeles, CA
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See all 5 projectsGlobalNodes is a technology solutions company specializing in AI development and system modernization. Clients commend their cost-effective pricing, efficient delivery, and high-quality outputs, with 100% of reviewers highlighting timely project management and security compliance. Notably, 50% of reviewers specifically appreciated their ability to align with client values and deliver tailored technological solutions.
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Undisclosed$25 - $49 / hr1,000 - 9,999
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See all 1 projectsEtech Technology Solutions specializes in comprehensive digital marketing services, offering expertise in areas such as YouTube channel relaunches and podcast production. Reviews highlight a strong alignment with client values and commendable project management, with an emphasis on timely delivery and client responsiveness. Notably, 100% of the feedback is positive, emphasizing the company's dedication to service.
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$1,000+$25 - $49 / hr2 - 9
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See all 3 projectsDot One Technology is a web development company specializing in custom website development and web design services. According to their reviews, they receive approximately 100% positive feedback, with clients praising their meticulous attention to detail, client satisfaction, and effective project management. The company is noted for delivering responsive and user-friendly websites, with enhanced SEO and performance optimization.
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$1,000+$25 - $49 / hr2 - 9Velykyi Kuchuriv, Ukraine
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See all 1 projectskode.software is a web development company specializing in frontend work, particularly in creating landing pages for SaaS products. They have received positive feedback for their design quality, cost-effectiveness, and tidy coding, with 100% of the reviewers highlighting their communication and flexibility. Despite some minor issues with initial information gathering, clients express satisfaction and plan to continue working with them.
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$5,000+$100 - $149 / hr10 - 49East Greenwich, RI
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See all 3 projectsMythic Digital, LLC is a web development company specializing in Drupal and JavaScript solutions, including API integration and website revamps. Across their reviews, 100% of clients praised their project management skills, highlighting their adherence to deadlines and strong communication. Additionally, 50% of reviewers emphasized their impressive depth of knowledge and high-quality development work.
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List of the Top 15 JavaScript Development Companies
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$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$25,000+$50 - $99 / hr50 - 249Kraków, Poland
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$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 -
$10,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.4/40.019.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development60% JavaScript55% Other -
$10,000+< $25 / hr250 - 999Thiruvananthapuram, India
Ability to deliver
37.7/40.018.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development50% JavaScript50% Other -
$10,000+Undisclosed50 - 249San Francisco, CA
Ability to deliver
38.9/40.019.6/20 Reviews9.6/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$10,000+$50 - $99 / hr50 - 249Montevideo, Uruguay
Ability to deliver
39.3/40.019.8/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% Other -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
39.9/40.020/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
36.9/40.018/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
70% Web Development50% JavaScript30% Other -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% 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 -
$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 -
$50,000+$25 - $49 / hr50 - 249Kharkiv, Ukraine
Ability to deliver
36.8/40.017/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development50% JavaScript55% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.8/40.017.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
60% Web Development45% JavaScript40% 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 - 9,999L'viv, Ukraine
Ability to deliver
38.8/40.019/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% Other -
$25,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
37.2/40.018.2/20 Reviews10/10 Clients & Experience9/10 Market PresenceService focus
40% Web Development50% JavaScript60% Other -
$25,000+$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 Development33% 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+< $25 / hr250 - 999Kolkata, India
Ability to deliver
36.3/40.019/20 Reviews9/10 Clients & Experience8.4/10 Market PresenceService focus
35% Web Development30% JavaScript65% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, 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+$25 - $49 / hr1,000 - 9,999Plano, TX
Ability to deliver
36.9/40.017.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$50,000+$150 - $199 / hr50 - 249Matlock, England
Ability to deliver
38.2/40.018.4/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$1,000+< $25 / hr1,000 - 9,999Los Angeles, CA
Ability to deliver
36.9/40.019.6/20 Reviews9.3/10 Clients & Experience8/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$10,000+$50 - $99 / hr10 - 49Warszawa, Poland
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$50,000+$150 - $199 / hr50 - 249New York, NY
Ability to deliver
35.9/40.016.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
60% Web Development45% JavaScript40% Other -
$50,000+$150 - $199 / hr250 - 999Irvine, CA
Ability to deliver
36.4/40.016.4/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
30% Web Development30% JavaScript70% Other -
$10,000+< $25 / hr250 - 999Hanoi, Vietnam
Ability to deliver
37.9/40.018.6/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
30% Web Development21% JavaScript70% Other -
$100,000+$25 - $49 / hr250 - 999Cebu City, Philippines
Ability to deliver
38.1/40.019.4/20 Reviews10/10 Clients & Experience8.7/10 Market PresenceService focus
30% Web Development20% JavaScript70% 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.