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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Undisclosed$50 - $99 / hr2 - 9Burbank, CA
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See all 3 projectsCHRS Interactive is a web development company known for its personalized approach and expertise in both front-end and back-end development. With 100% positive feedback from clients, CHRS Interactive consistently demonstrates professionalism, quick response times, and a collaborative spirit, often exceeding client expectations by providing thorough research and solutions tailored to specific project needs.
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$1,000+< $25 / hr10 - 49London, England
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See all 7 projectsLoudlyDev Global Solutions is a custom web development company specializing in creating responsive and user-friendly websites. They received overwhelmingly positive feedback, with 100% of reviewers highlighting their effective communication, timely delivery, and understanding of client needs. Their expertise in Web Development is particularly noted, with emphasis on enhancing online presence and facilitating direct customer engagement.
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$1,000+$25 - $49 / hr50 - 249New Delhi, India
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See all 5 projectsCheenti Digital LLC is a comprehensive digital marketing agency specializing in SEO, PPC, social media marketing, and e-commerce website development. The company is praised for its flexibility, effective communication, and timely project management, with over 90% of its reviews highlighting these strengths. Clients report significant improvements in online visibility and engagement, with notable success in keyword rankings and revenue growth. Some areas for improvement include smoother handovers and proactive strategy development.
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$1,000+$50 - $99 / hr2 - 9
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See all 1 projectsBanana_code is a web development company specializing in beautiful website design and SEO services. They consistently deliver projects on time, with 100% of reviewers expressing high satisfaction in terms of exceeding expectations and achieving top search engine rankings. Clients frequently commend their ability to independently create impressive designs and effectively increase customer engagement.
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$10,000+$25 - $49 / hr50 - 249
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See all 1 projectsSolution Mentors Inc. is an IT services company specializing in cloud infrastructure deployment, DevOps, and managed support services. The feedback is overwhelmingly positive, highlighting their professionalism, efficiency, and expertise. Approximately 100% of reviewers commend their ability to enhance operational efficiency and reduce costs, while their seamless workflow and holistic approach are consistently praised.
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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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$25,000+$50 - $99 / hr10 - 49San Diego, CA
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See all 5 projectsNoMoBo is a versatile technology and design company specializing in software development, web design, and branding solutions. Across reviews, 100% of clients commend their professionalism, personalized service, and ability to meet project requirements effectively. Clients appreciate their responsiveness and quality output, with no areas for improvement noted, highlighting their commitment to exceeding expectations.
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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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$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 / 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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$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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$1,000+$50 - $99 / hr10 - 49Sacramento, CA
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See all 17 projectsOutstanding Experience is a web development company that specializes in custom Shopify solutions, offering services such as web design, full-stack web development, and online development. Across their reviews, 100% of clients commend their responsiveness and quality of work, with 70% specifically highlighting their expertise in Shopify customization. Their problem-solving abilities and commitment to timely delivery have consistently impressed clients.
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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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$10,000+$50 - $99 / hr10 - 49Sumy, Ukraine
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See all 17 projectsValtorian is a web development company that specializes in full-cycle website development, custom web development, and web design. Across multiple reviews, Valtorian is praised for their strategic vision, exceptional project management, and ability to deliver scalable digital platforms with impressive speed. Feedback indicates 100% positive sentiments regarding their reliability, communication, and ability to meet deadlines, with 75% of reviewers emphasizing their excellent value for cost.
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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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$5,000+$25 - $49 / hr10 - 49Surat, India
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See all 4 projectsCODEEDOC is a web development company specializing in Front-End Development and Full-Stack Web Development, with a focus on blockchain integration and responsive web applications. Their reviews highlight a 100% success rate in project delivery and seamless communication, with 100% of clients expressing satisfaction with their responsiveness, professionalism, and alignment with client values.
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$50,000+$50 - $99 / hr50 - 249Jupiter, FL
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See all 1 projectsDevessence is a software development company specializing in creating cloud-based SaaS solutions, particularly for the music industry. The reviews highlight their exceptional product development and commitment to customer service, with 100% of feedback reflecting positive remarks about their ability to deliver a high-quality product on time and adapt to changing project requirements.
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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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$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+$100 - $149 / hr2 - 9Rancho Cucamonga, CA
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See all 4 projectsCallstack Labs is a web development company specializing in custom website development and web application development. Their reviews highlight outstanding project management and technical expertise, with 100% recommending them for their strategic vision and ability to deliver high-quality outputs. They are particularly noted for exceeding expectations in timeliness and quality across various projects.
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$5,000+$25 - $49 / hr10 - 49
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See all 3 projectsTimebase is a web development company specializing in custom website development and API integrations. They are highly praised for their efficiency, transparency, and proactive approach, with 100% of reviews noting successful project execution and excellent communication. Clients appreciate their commitment to long-term partnerships and consistent on-time delivery within budget.
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UndisclosedUndisclosed10 - 49
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See all 6 projectsEmerge Digital, a company specializing in Web Development and Web Design, consistently receives positive feedback for its timely delivery, commitment to client needs, and exceptional project management. Approximately 100% of reviewers commend their punctuality and flexibility, with many highlighting their ability to translate client visions into successful outcomes, particularly in Website Development and SEO enhancements.
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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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$10,000+$100 - $149 / hr2 - 9
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See all 7 projectsUnset is a web development company specializing in creating custom websites and transforming landing pages into full websites. Feedback from clients is overwhelmingly positive, highlighting their ability to deliver quality projects promptly and adapt to client needs, with 100% of reviews mentioning their strong communication and project management skills. Their expertise in UX/UI and design is frequently praised, with clients noting their straightforwardness and responsiveness.
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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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Undisclosed$50 - $99 / hr2 - 9Bootle, England
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See all 2 projectsMoji Studio Tech is a web development company specializing in custom website development and full-stack web development services. Reviews highlight their excellent project management and ability to deliver complex, tailored websites, with 100% of feedback being positive. Clients appreciate their alignment in company values and good value for cost.
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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 - 9Odesa, Ukraine
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See all 1 projectsPixelfreight is a web development company specializing in services like website development, web design, and SEO optimization. They successfully delivered a project involving custom website development and CRM integration within one month. Client feedback shows 100% satisfaction, highlighting their industry expertise, project management skills, and value for cost.
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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+< $25 / hr50 - 249Torrance, CA
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See all 4 projectsHangingPanda PVT LTD is a web development company recognized for its expertise in Website Development, with a focus on creating secure and user-friendly digital marketplaces. Feedback is overwhelmingly positive, highlighting the team's strategic thinking, adaptability, and timely delivery, with 100% of reviewers emphasizing their professionalism and innovation in web programming and project execution.
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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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$1,000+$50 - $99 / hr10 - 49West Bromwich, England
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See all 1 projectsAl-Junaid Agency is a specialized development company known for creating tailored AI tools. They have received overwhelmingly positive feedback, with 100% of reviewers highlighting their technical expertise and responsive project management. Clients particularly appreciate their ability to bring visions to life with precision, contributing to significant user growth and satisfaction.
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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.