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 88 projectsDigis, a Fiverr company (NYSE: FVRR), excels in providing comprehensive web development and staff augmentation services. With a focus on custom website development, front-end and back-end development, they consistently deliver high-quality projects, demonstrating 100% positive feedback for their technical expertise and effective project management. Clients frequently highlight their reliability and seamless integration into existing teams, with 80% mentioning their exceptional communication skills and adaptability.
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$1,000+$50 - $99 / hr2 - 9
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See all 1 projectsDarkwater Digital is a digital marketing and web development company specializing in enhancing web presence and design. The feedback is overwhelmingly positive, with clients praising their responsiveness, cost-effectiveness, and ability to improve Google rankings. Approximately 100% of reviewers commend their professional and personal service, leading to increased client inquiries and satisfaction.
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Undisclosed$25 - $49 / hr10 - 49Auckland, New Zealand
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See all 3 projectsZapperr Software Solutions NZ/AU is a web development company specializing in custom website development, web application development, and integration with third-party applications. They consistently deliver high-quality, cost-effective projects on time, with 100% of reviewers highlighting their responsiveness and effective communication. Clients appreciate their creativity, technical knowledge, and alignment with client values.
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$1,000+$25 - $49 / hr2 - 9Lahore, Pakistan
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See all 1 projectsSynergistlab is a mobile app development company known for its strong expertise in coding and adaptability to industry changes. The feedback is overwhelmingly positive, with 100% of reviews highlighting their ability to meet and exceed expectations. Clients particularly appreciate their project management and effective communication, ensuring seamless integration with existing systems.
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$1,000+$25 - $49 / hr2 - 9Gujrat, Pakistan
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See all 2 projectsRutal Technologies is a web development company specializing in custom website development, including full-stack and WordPress development, with a focus on e-commerce solutions. The reviews highlight their commitment to delivering scalable, user-friendly platforms, with 100% positive feedback on their professionalism, responsiveness, and ability to meet or exceed deadlines. Their technical expertise and proactive communication are consistently praised.
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$10,000+$50 - $99 / hr2 - 9București, Romania
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See all 4 projectsZynala is a distinguished web development company specializing in custom website development, web application development, and full-stack web development. The reviews reveal a 100% satisfaction rate, with clients consistently praising their project management, responsiveness, and problem-solving abilities. Notably, over 75% of the reviewers commend Zynala's ability to meet client specifications and deadlines with professionalism and dedication.
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$1,000+$25 - $49 / hr10 - 49Palladam, India
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See all 6 projectsNitrosoft Technologies is a dynamic web development company specializing in custom website development and full-stack web development solutions. Their reviews indicate a strong emphasis on creating user-friendly and effective online platforms, with 100% of reviewers highlighting the company's problem-solving approach and personalized solutions. Clients appreciate their seamless workflow and coordination, though some mention initial project management challenges. Overall, Nitrosoft Technologies receives highly positive feedback for their innovative and client-centric strategies.
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$50,000+$50 - $99 / hr50 - 249Oakland, CA
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See all 2 projectsBlue Trail Software is an app development company known for its high-quality work, effective communication, and timely delivery. With 100% positive feedback, clients appreciate their proactive approach and ease of team access. They consistently deliver projects on budget and are highly rated for their services and alignment with client values.
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$1,000+< $25 / hr10 - 49Noida, India
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See all 3 projectsSMDEVOPS is a versatile technology company offering services in web development, SEO, social media management, and app development. The company is consistently praised for its professionalism, effective communication, and cost-effective solutions. Approximately 100% of reviewers highlight their satisfaction with SMDEVOPS's work quality and communication, noting significant project successes such as increased web traffic and social media reach.
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$10,000+$150 - $199 / hr2 - 9New York, NY
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See all 5 projectsHAAS/créa is a versatile web development company known for expertise in custom website development and full-stack web development solutions. They excel in providing tailored web programming and online development services, particularly praised for their robust project management and consultative approach. Reviews show a 100% satisfaction rate, highlighting their commitment to excellence and timely delivery, with clients consistently impressed by their problem-solving capabilities and ability to enhance digital solutions.
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$1,000+$25 - $49 / hr2 - 9Kharkiv, Ukraine
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See all 1 projectsBravodev is a software development company specializing in creating, maintaining, and expanding SaaS solutions, particularly for the insurance sector. Client feedback is overwhelmingly positive, highlighting their high technical expertise, excellent communication skills, and dedication, with 100% of reviewers emphasizing their ambition. All reviews are positive, though one suggests improving day-to-day bug handling.
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$1,000+$25 - $49 / hr10 - 49
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See all 7 projectsInsights Consulting is a web development company specializing in custom website and CRM system design, as well as full-stack web development for gaming platforms. Over 90% of reviewers highlighted their technical expertise and responsiveness, with 30%–40% improvements in operational efficiency and engagement metrics noted by clients. Despite minor documentation feedback, clients commend their tailored solutions and timely project management.
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$10,000+$25 - $49 / hr2 - 9
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See all 1 projectsASPA Softech LLP is a web development company excelling in SharePoint migrations, offering services like full-stack web development and custom web application development. The firm received overwhelmingly positive feedback, with 98.7% of users expressing satisfaction post-migration. Clients commend their effective communication, adherence to timelines, and the ability to resolve issues efficiently.
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$1,000+< $25 / hr10 - 49Gandhinagar, India
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See all 3 projectsCodoffer Infotech is a web development company excelling in custom website development and web design. They received unanimous positive feedback, with reviewers highlighting their expertise in the latest market trends and their effective communication, even across different time zones. The company's dedication and knowledge were pivotal in enhancing their client's online presence.
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$5,000+$25 - $49 / hr10 - 49Toronto, Canada
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See all 4 projectsTriotech Systems provides comprehensive Web Development services, including Website Development and Web Programming, with a focus on creating end-to-end MVP prototypes and CRM systems. Reviews highlight their attentiveness, timely delivery, and strong alignment with client values, leading to successful long-term partnerships and impressive client growth.
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$10,000+$100 - $149 / hr10 - 49
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See all 1 projectsDigital Echoes is a digital marketing agency specializing in PR, online marketing, and brand identity creation. The company received overwhelmingly positive feedback, with 100% of reviewers praising their professionalism, impressive results, and friendly demeanor. Clients noted substantial growth in social media presence and engagement, highlighting the agency's expertise in delivering effective marketing strategies.
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$5,000+< $25 / hr50 - 249Prishtina, Kosovo
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See all 2 projectsSonnecto is a business process outsourcing company offering services in lead generation, customer support, software development, and digital marketing. Overall, they receive positive feedback, with clients praising their adaptability, effective project management, and strategic partnership. Approximately 90% of reviewers highlight their strong communication skills and innovative problem-solving approach, while some suggest expanding their service offerings.
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$1,000+< $25 / hr10 - 49Bengaluru, India
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See all 1 projectsBestWeb Ventures is a development and digital marketing company that provides services such as web development, MVP development, and digital marketing solutions. Their clients report 100% satisfaction with timely project delivery and valuable guidance, although they suggest improvements in project management tools for better usability.
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$10,000+$25 - $49 / hr10 - 49
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See all 50 projectsApp Crops is a web development company known for their expertise in website maintenance and updates. They consistently deliver projects on time, with 100% of reviewers impressed by their professionalism and the quality of their work. Clients appreciate their effective communication, with no areas for improvement mentioned.
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$1,000+$50 - $99 / hr50 - 249New York, NY
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See all 5 projectsMatch.dev is a web development company specializing in website development and UI/UX design, noted for their expertise in creating accessible websites. They have received overwhelmingly positive feedback, with 100% of reviews highlighting their transparency, effective communication, and ability to achieve significant improvements in website traffic and stakeholder satisfaction. Their proficiency in web programming and project management ensures seamless collaboration and successful project outcomes.
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$1,000+$100 - $149 / hr2 - 9Longmont, CO
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See all 4 projectsColorado SEO Design, primarily recognized as an SEO agency and web design company, has garnered overwhelmingly positive feedback from clients, with 100% of reviewers highlighting significant improvements in online presence and user experience. Clients have noted a 35% increase in organic search traffic and praised the company's professional project management and tailored solutions.
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$25,000+$50 - $99 / hr50 - 249Wrocław, Poland
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See all 19 projectsVazco is a comprehensive web development company excelling in full-stack web development, offering expertise in technologies like Meteor, Node.js, and React.js. They are highly commended for delivering high-quality solutions and maintaining excellent communication, even across time zones, with around 100% of reviews highlighting their technical expertise and proactive approach. Their ability to meet tight deadlines and offer strategic advice sets them apart.
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$25,000+$100 - $149 / hr2 - 9San Diego, CA
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See all 6 projectsBackpack Works is a web development company specializing in website development, UX/UI design, and front-end development. Reviews indicate exceptional responsiveness, professionalism, and the ability to adapt to various client needs, with a focus on high-quality work and strategic insights. Notably, 100% of reviews highlight their reliability, meeting deadlines consistently, and 60% commend their flexibility and collaborative approach, which fosters strong client partnerships.
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$5,000+< $25 / hr50 - 249Chiyoda City, Japan
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See all 1 projectsDIPROTECH is a development company specializing in app development and localization services. The company is noted for its robust technical foundation and strong project management skills, with 100% of feedback highlighting their proactive communication and responsiveness. Some reviewers suggest improvements in understanding cultural nuances for specific markets.
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Undisclosed$150 - $199 / hr10 - 49Jacksonville, FL
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See all 5 projectsfeature[23] is a versatile software development company specializing in creating custom applications and systems across various industries. The reviews highlight their technical expertise, with 100% of reviewers praising their ability to re-engineer and modernize existing platforms. Clients appreciate their flexibility and proactive project management, noting a strong focus on understanding client needs and integrating with existing operations. Overall, feature[23] is recognized for delivering high-quality, reliable solutions and maintaining excellent client relationships.
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$10,000+$25 - $49 / hr10 - 49
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See all 8 projectsAsterism Infosoft Pvt Ltd is a web development company specializing in Website Development, Web Application Development, and digital marketing. The company receives overwhelmingly positive feedback, with clients praising their responsiveness, personalized service, and effective project management. Approximately 100% of reviewers highlight their satisfactory project delivery and proactive communication.
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$5,000+$25 - $49 / hr10 - 49Multan, Pakistan
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See all 8 projectsDevVibe is a web development company specializing in website design and development, with a focus on crafting custom web solutions. Across their reviews, 100% of clients praised their strong project management and research capabilities, highlighting timely delivery and excellent communication. Clients appreciate their professional yet friendly approach, with no significant areas for improvement noted.
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$1,000+$25 - $49 / hr10 - 49Dhaka, Bangladesh
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See all 4 projectsVista SysTech is a web development company that excels in Website Development, Web Design, and e-commerce solutions. They have consistently received positive feedback, with 100% of reviews highlighting their technical expertise and responsive project management. Clients appreciate their ability to deliver visually appealing and functional websites while maintaining clear communication and timely delivery. Their mastery in custom web solutions has proven effective across various industries.
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$1,000+$25 - $49 / hr50 - 249Nanakaramguda, India
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See all 4 projectsiGenero Web Solution Private Limited is a web development company specializing in custom website development and front-end development. They are praised for their technical expertise and understanding of user experience, with 100% of reviewers noting their ability to enhance project visibility and functionality. Some suggest potential for more innovative designs, yet their commitment to client-centric solutions is consistently highlighted.
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$10,000+$50 - $99 / hr10 - 49Zagreb, Croatia
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See all 3 projectsSamurai Digital is a web development company specializing in web design and custom website development. The reviews reflect a high level of satisfaction, with 100% of clients praising their professionalism, responsiveness, and ability to deliver functional, optimized, and user-friendly websites. Samurai Digital is recognized for their innovative solutions and effective project management, making them a trusted partner for digital product creation.
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$10,000+$50 - $99 / hr50 - 249
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See all 2 projectsSchnell Solutions Limited is a web development company specializing in custom website development and web application development. With a focus on bringing clients' ideas to life, they have consistently received positive feedback for their efficient project management and exceptional attention to detail. 100% of reviewers highlight their professionalism and ability to turn concepts into functional digital platforms, leading to high client retention rates.
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$1,000+$25 - $49 / hr10 - 49Toronto, Canada
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See all 2 projectsElegant Designs - Mobile App & Web Developers is a company specializing in mobile app and e-commerce website development. Across their reviews, clients expressed high satisfaction, citing smooth workflows, timely completion of projects, and effective communication. Positive feedback is prevalent, with 100% of reviewers highlighting project management effectiveness and responsiveness as key strengths.
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$1,000+< $25 / hr10 - 49Surat, India
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See all 1 projectsRising Star Infotech is a web development company specializing in website development and web application development. With strong client satisfaction, 100% of reviews highlight their technical expertise and timely delivery. Clients report a 45% increase in web traffic post-collaboration, showcasing their proficiency in enhancing user interface and performance.
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$50,000+$50 - $99 / hr2 - 9
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See all 1 projectsOpenKit is a web development company specializing in web application development and custom website development. They are highly commended for their responsiveness, understanding of web design, and effective community engagement, with 100% of reviews highlighting these attributes. Their projects demonstrate significant user engagement and adherence to accessibility standards, with no noted areas for improvement.
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$1,000+$50 - $99 / hr10 - 49Fort Lauderdale, FL
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See all 5 projectsRewardLion is a web development company known for its expertise in custom website development and web design. The reviews indicate a high level of satisfaction, with clients appreciating their diligent project management and communication. Notably, 100% of reviewers expressed contentment with the results, highlighting the company's ability to enhance clients' understanding of their services through effective website solutions.
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$5,000+$25 - $49 / hr10 - 49Bellevue, WA
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See all 3 projectsScalex Technology Solutions is a technology and software development company specializing in software solutions, infrastructure design, and mobile app development. Their reviews reflect a 100% positive feedback rate, highlighting their impressive communication, technical expertise, and dedication to clients' success. Reviewers consistently commend their ability to meet deadlines and provide high-quality, independent work with effective project management.
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$1,000+$25 - $49 / hr10 - 49Moncton, Canada
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See all 2 projectsQubit3 Technologies specializes in Website Development and Web Programming, offering customized solutions such as API parsing and WordPress function development. Feedback highlights their effective communication, timely delivery, and strong understanding of client requirements, making them a reliable choice for web development projects.
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$1,000+$25 - $49 / hr2 - 9Kyiv, Ukraine
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See all 1 projectsBlackSeed is a web development company specializing in comprehensive transport brokerage platforms, including web and mobile solutions. Reviews indicate a 100% satisfaction rate, highlighting their responsiveness and effective project management. Clients appreciate their detailed approach and round-the-clock support, with 80% mentioning impressive communication and responsiveness. BlackSeed continuously enhances its processes to maintain high-quality standards.
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$5,000+$25 - $49 / hr2 - 9Opole, Poland
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See all 4 projectsDEPCORE is a web development company specializing in custom website development, web application development, and web design. The reviews reflect 100% positive feedback, highlighting their ability to deliver projects on time, their excellent communication, and their integration of modern design elements. Reviewers frequently praise DEPCORE's responsiveness and cultural alignment, with 75% noting the company's impressive project management and collaboration skills.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 7 projectsENVITICS SOLUTIONS is a web development company specializing in custom website development, full-stack web development, and web application development. Their reviews indicate a strong emphasis on professionalism, timely project delivery, and effective communication, with 100% positive feedback on project management and responsiveness. Clients appreciate their adaptability, high-quality deliverables, and value for cost.
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$1,000+$25 - $49 / hr10 - 49
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See all 2 projectsTechyTrion Softwares is a web development company specializing in web design, custom website development, and resolving technical issues efficiently. Reviews highlight their professionalism and ability to redesign websites, with 100% of feedback being positive and praising their effective communication and timely delivery.
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$1,000+$25 - $49 / hr10 - 49
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See all 1 projectsFM Enterprises Online Services is an eCommerce and web development company that specializes in creating custom retail systems and websites. The company has received highly positive feedback, with 100% of reviewers noting their professionalism, responsiveness, and effective communication. The integration of a custom POS solution and seamless project delivery were particularly commended by clients.
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$10,000+$25 - $49 / hr10 - 49Stockholm, Sweden
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See all 4 projectsDevelopers Shore is a web development company specializing in Web Programming and Full-Stack Web Development. The overall feedback is overwhelmingly positive, with clients appreciating their expertise and project management skills. Approximately 75% of users found the app developed by Developers Shore to be valuable, and their design work was particularly praised.
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$5,000+$25 - $49 / hr10 - 49Moreno, Argentina
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See all 2 projectsLubee is a web development company specializing in custom website development and full-stack web development solutions. Their work has been praised for improving process efficiency by reducing timelines from one week to 2–3 days. Reviewers consistently commend their project management skills, with 100% positive feedback, highlighting their ability to adjust to client budgets and requirements successfully.
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$10,000+$50 - $99 / hr10 - 49
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See all 5 projectsLevels.Digital is a web development company specializing in website development, web design, and front-end development. Reviews indicate a high level of client satisfaction, with 100% positive feedback highlighting their intelligence, attention to detail, and problem-solving capabilities. Clients commend their ability to deliver exceptional results and resolve issues promptly, making them reliable partners in ongoing projects.
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$50,000+$50 - $99 / hr10 - 49Warszawa, Poland
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See all 4 projectsKYOTU Technology is a web development company renowned for delivering comprehensive services in Website Development and Full-Stack Web Development. They are praised for their proactive, client-focused approach and successful project management. Feedback highlights their expertise in international projects, with no negative reviews reported. Their effective communication and collaboration tools ensure timely project execution.
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$25,000+$50 - $99 / hr10 - 49
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See all 1 projectsárda.works is a web development company specializing in custom website development and web application development. The reviews highlight their effective project management, with daily stand-ups and timely delivery, as well as their exceptional team, particularly the managing partner, Alex. The company has garnered entirely positive feedback, praising their quality work and detail-oriented approach.
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$75,000+$300+ / hr10 - 49Nashville, TN
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See all 2 projectsMORR is a creative agency specializing in brand identity, marketing strategies, and web presence enhancement. Clients appreciate their dedication and strategic support, with 100% of reviewers highlighting their commitment to success and personal guidance. Despite minor feedback regarding market research, the company's methodologies have effectively driven successful project launches and partnerships.
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$1,000+$50 - $99 / hr10 - 49Bankstown, Australia
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See all 1 projectsX2hundred is a web development company specializing in Website Development and Web Design. The feedback is overwhelmingly positive, with 100% satisfaction regarding their project management and adaptability to client needs. They excel in communication, ensuring clients are well-informed and involved in the development process.
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$5,000+$50 - $99 / hr10 - 49Maribor, Slovenia
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See all 1 projectsClover Labs is a web development company specializing in designing and developing e-commerce websites. The overall feedback from their reviews is overwhelmingly positive, with 100% of reviewers highlighting their professionalism, responsiveness, and effective project management. Their ability to deliver a seamless customer experience and achieve significant improvements, such as a reported 200% growth, is highly praised.
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$1,000+$50 - $99 / hrFreelancerSan Diego, CA
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See all 1 projectsKalyxo is a web development company that specializes in improving user experiences and adding new features to web pages. Overall feedback is positive, with 100% of reviewers appreciating their transparent communication and ease of collaboration. The company is noted for delivering projects on time and within budget, making them a reliable choice for custom website development projects.
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List of the Top 15 JavaScript Development Companies
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$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 -
$50,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Web Development75% JavaScript55% Other -
$10,000+$50 - $99 / hr50 - 249Gliwice, Poland
Ability to deliver
39/40.019.2/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Web Development60% JavaScript55% Other -
$10,000+< $25 / hr250 - 999Thiruvananthapuram, India
Ability to deliver
38.1/40.018.8/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
50% Web Development50% JavaScript50% Other -
$10,000+Undisclosed50 - 249San Francisco, CA
Ability to deliver
39.1/40.019.8/20 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
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
50% Web Development35% JavaScript50% 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 -
$50,000+$100 - $149 / hr1,000 - 9,999San Francisco, CA
Ability to deliver
39.5/40.019.6/20 Reviews9.9/10 Clients & Experience10/10 Market PresenceService focus
15% Web Development25% JavaScript85% 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 -
$25,000+$25 - $49 / hr50 - 249Newark, DE
Ability to deliver
39.8/40.019.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development35% JavaScript60% 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 -
$10,000+< $25 / hr250 - 999Kolkata, India
Ability to deliver
36.7/40.019.4/20 Reviews9/10 Clients & Experience8.4/10 Market PresenceService focus
35% Web Development30% JavaScript65% Other -
$1,000+< $25 / hr250 - 999Boston, MA
Ability to deliver
35.9/40.016.2/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Web Development35% JavaScript60% 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 -
$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 Development33% JavaScript90% Other -
$5,000+< $25 / hr50 - 249Ahmedabad, India
Ability to deliver
36.4/40.016.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
60% Web Development45% JavaScript40% 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 -
$50,000+$50 - $99 / hr1,000 - 9,999L'viv, Ukraine
Ability to deliver
38.4/40.018.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
21% Web Development18% JavaScript79% 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 / hr1,000 - 9,999Plano, TX
Ability to deliver
36.8/40.017.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Web Development25% JavaScript80% 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
37.5/40.018.4/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
50% Web Development70% JavaScript50% Other -
$50,000+$150 - $199 / hr50 - 249Chelsea, Australia
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 / hr50 - 249New York, NY
Ability to deliver
37.8/40.018/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
100% Web Development30% JavaScript -
$1,000+< $25 / hr1,000 - 9,999London, England
Ability to deliver
36.5/40.019.2/20 Reviews9.3/10 Clients & Experience8/10 Market PresenceService focus
20% Web Development25% JavaScript80% Other -
$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 -
$25,000+$100 - $149 / hr50 - 249Cypress, CA
Ability to deliver
36.2/40.018.2/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
100% Web Development40% JavaScript
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.