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< $25 / hr2 - 9Uyo, Nigeria
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See all 1 projectsMuko Digital, a full-stack web development company, excels in addressing digital challenges, particularly in technical SEO and website enhancements. Clients commend their timely delivery and the seamless integration of new features, with 100% positive feedback on communication and project execution. The team's alignment with client values and adept problem-solving stands out significantly.
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$25,000+$50 - $99 / hr2 - 9Warszawa, Poland
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See all 1 projectsIT Flow AI is a web development company specializing in custom website development and full-stack web development, with an emphasis on AI-powered solutions. Feedback indicates a 100% positive sentiment, highlighting their timely delivery and exceptional problem-solving skills in complex estimation logic. Their ability to significantly reduce estimate generation time and streamline onboarding is frequently praised by clients.
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$1,000+$25 - $49 / hr250 - 999
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See all 6 projectsCollatree Arabia is a digital marketing company specializing in enhancing online presence through strategic SEO and paid advertising campaigns. Their exceptional communication and client-centric approach are highlighted in reviews, with 100% positive feedback praising their effective strategies that resulted in a 40% ROI increase and 60% improvement in keyword rankings.
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$1,000+< $25 / hr2 - 9
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See all 3 projectsSolveita is a web design and software development company known for creating modern, responsive websites and custom software solutions. They receive overwhelmingly positive feedback, with 100% of reviewers praising their project management, communication, and ability to meet deadlines. Clients particularly appreciate their attention to detail, technical expertise, and user-centric approach.
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$5,000+$50 - $99 / hr10 - 49Chalakudy, India
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See all 1 projectsApro IT Solutions is a digital marketing and web development company specializing in enhancing online presence through social media management, SEO, and creative design. The reviews highlight their expertise and effectiveness in branding, with 100% of the feedback being positive, noting their extensive knowledge and impressive execution. Their work reportedly increased reach and sales for their clients.
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$1,000+$25 - $49 / hr10 - 49Thane, India
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See all 2 projectsNationtechpro is a web development company specializing in custom website development and digital marketing services. The reviews highlight their ability to significantly boost online presence, with a reported 30x increase in incoming leads. Clients commend their professional approach and efficient project management, with 100% positive feedback on their ability to deliver captivating websites and applications.
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$1,000+$25 - $49 / hr10 - 49Navi Mumbai, India
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See all 3 projectsResurgam Digital LLP is a web development company specializing in custom website development and design. Their client-focused approach results in timely project delivery and effective solutions, as 100% of reviewers highlight their impressive client orientation and satisfaction with their services.
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$5,000+$25 - $49 / hr2 - 9
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See all 4 projectsBleed AI is an innovative AI-driven development company specializing in advanced platform solutions. Their work is highly praised, with 100% of reviews highlighting their exceptional project management and ability to integrate cutting-edge technology. They successfully deliver secure, scalable platforms, ensuring excellent client satisfaction and user-friendly designs.
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$5,000+< $25 / hr2 - 9Beograd, Serbia
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See all 3 projects3ort Inženjering is a software development company specializing in .NET and JavaScript environments. The company is praised for its conscientious work ethic, high-quality outputs, and efficient project management, with positive feedback from all reviewers. Approximately 100% of clients highlight their responsiveness and value for money, with no significant areas for improvement noted.
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$1,000+$50 - $99 / hr2 - 9Tampa, FL
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See all 3 projectsZappyPeople by 1st-party.com is a data analytics consulting firm that excels in implementing and optimizing analytics platforms such as PostHog. Their clients praise their clear communication, thorough documentation, and impressive expertise, resulting in 100% positive feedback. Reviewers highlight their ability to accurately track KPIs and provide actionable recommendations, with no noted areas for improvement.
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$5,000+$50 - $99 / hr2 - 9Wrocław, Poland
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See all 2 projectsLibreWorks is a software development company specializing in custom web applications, Confluence add-ons, and Java development. The overall feedback from clients is overwhelmingly positive, highlighting their technical expertise, agile collaboration, and ability to adapt to short-notice changes. Approximately 100% of reviewers were impressed by their software quality and reliability, with no significant areas for improvement noted within the reviewed projects.
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$1,000+$50 - $99 / hr2 - 9Montréal, Canada
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See all 2 projectsCanguloStudios is a web development company specializing in custom website development and SEO. Reviews indicate a strong reputation for efficiency, meticulous project management, and delivering modern and functional websites. Approximately 100% of reviewers praise their web design and SEO skills, although some note slower response times.
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$1,000+$25 - $49 / hr2 - 9Campo Tures, Italy
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See all 2 projectsD/arte Creative Studio is a web development company specializing in custom website development and web design. Reviews indicate a 100% positive reception, highlighting their professionalism, attention to detail, and seamless project management. Clients commend their ability to deliver modern, user-friendly websites that align with brand identity, making them highly recommended for web development projects.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsZablesoft is a proficient software development company specializing in Microsoft technologies, including .NET and SQL Server, with noted expertise in interface design. All feedback is positive, highlighting their technical knowledge, excellent project management, and eagerness to communicate. The company is highly recommended for organizations seeking robust software solutions.
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$1,000+$25 - $49 / hr2 - 9
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See all 1 projectsAtirSoft is a web development company with expertise in custom website development and web application development. Reviewers highlight their meticulous attention to detail and excellent project management, with 100% of feedback being positive. Clients commend their ability to blend creativity with technical expertise, noting impressive design and seamless CMS integration.
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$5,000+$25 - $49 / hr2 - 9Lahore, Pakistan
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See all 1 projectsInfintrix Technologies is a technology company specializing in developing scalable and customizable solutions, particularly for the restaurant industry. They received 100% positive feedback, with clients praising their technical expertise, proactive approach, and effective project management skills. Their ability to deliver a robust and efficient system with seamless integrations has been highly commended.
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$1,000+< $25 / hr2 - 9
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See all 1 projectsNeosyss is a web development company noted for its expertise in optimizing website speed and enhancing functionality. All reviewers express satisfaction, highlighting their impressive project management and proactive communication. They successfully increased a client's speed ranking from 70 to 90 in one second, with 100% of feedback being positive.
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Undisclosed< $25 / hr2 - 9Mumbai, India
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See all 1 projectsFrenztech is a web development company specializing in custom website development and web design. With positive feedback from 100% of reviewers, Frenztech is praised for its technical expertise, timely delivery, and efficient project management. Clients appreciate their ability to implement designs effectively and communicate clearly throughout the development process.
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$1,000+< $25 / hr50 - 249Rajkot, India
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See all 5 projectsWeyBee Solutions Pvt Ltd is a web development company specializing in custom website development and e-commerce solutions. They consistently receive positive feedback, with clients appreciating their cooperative and efficient service. Approximately 100% of reviewers mention satisfaction with their work and project management, highlighting their fast service and impressive results.
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$1,000+$50 - $99 / hr10 - 49
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See all 4 projectsMits sp. z o.o. is a full-stack web development company specializing in custom website development and e-commerce solutions. The company receives overwhelmingly positive feedback, with clients appreciating its technical expertise, timely project delivery, and deep understanding of business needs. Notably, 100% of reviewers commend their partnership approach and ability to offer innovative solutions.
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$1,000+$25 - $49 / hrFreelancer
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See all 2 projectsSharp Digital is a web development company specializing in full-stack web development, web design, and SEO optimization. Reviewers consistently highlight their efficiency and professionalism, noting that 100% of clients experienced significant improvements in their online presence and user engagement. The team is praised for delivering projects on time and providing effective, tailored solutions without unnecessary complications.
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$5,000+$25 - $49 / hr10 - 49Białystok, Poland
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See all 3 projects4e Agency is a web development company known for Website Development and creative materials production. They earned positive feedback from 100% of reviewers, who highlighted their exceptional communication and professionalism. Clients appreciate their ability to generate innovative ideas and deliver quality results, with 100% noting their flexibility and responsiveness to urgent needs.
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$1,000+$100 - $149 / hr2 - 9Bingham, England
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See all 1 projectsCircle Software & Design is a web development company known for its exceptional project management and effective communication. They consistently deliver projects on time and within budget, with 100% of reviewers praising their high standards and responsiveness. Clients appreciate their creativity and ability to listen, making them an ideal choice for web development projects.
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$10,000+$100 - $149 / hr10 - 49Irvine, CA
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See all 1 projectsCustom Software Solutions, Inc is a web development company specializing in custom website development and online marketing services. The company receives positive feedback for its project management capabilities and organization, with 100% of reviewers praising these aspects. Clients report improved website performance and increased web traffic, highlighting their satisfaction with the firm's full-stack web development and marketing expertise.
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$1,000+$25 - $49 / hr2 - 9
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See all 2 projectsZumar Labs is a Web Development company specializing in Custom Website Development, Web Design, and Full-Stack Web Development. Reviews reflect a 100% positive feedback rate, highlighting their professionalism, meticulous attention to detail, and excellent value. Clients commend their ability to deliver projects on time with high-quality results, enhancing user experience and business growth.
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$10,000+$25 - $49 / hr10 - 49Chișinău, Moldova
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See all 4 projectsmit-dev.com is a software development firm specializing in the development of complex AI and automation platforms. The company receives high praise for their ability to transform intricate requirements into live, successful SaaS platforms, with 100% of reviewers highlighting their excellent project management and communication skills. Positive feedback predominates, with reviewers noting significant reductions in manual workload and improved workflow efficiencies.
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$25,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 1 projectsOrange Sputnik is a specialized software development company known for its comprehensive technical solutions and effective communication. They have received overwhelmingly positive feedback, with 100% of reviewers highlighting their transparent and collaborative approach. Clients appreciate their ability to align technical requirements with business needs, resulting in strong growth outcomes, as demonstrated by a reported 300% growth in the first year.
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$5,000+< $25 / hr50 - 249Rajkot, India
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See all 3 projectsAum Solutions is a custom software development company known for delivering tailored software solutions with a focus on enhancing operational efficiency and scalability. They are praised for their strong project management, responsiveness, and ability to adapt to changing requirements. With 100% positive feedback, clients highlight their technical expertise and consultative approach in understanding business needs and providing innovative solutions.
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$1,000+$50 - $99 / hr10 - 49
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See all 3 projectsAlfaOrigin is a web development company specializing in custom website development and full-stack web development solutions. The overall feedback from their reviews is overwhelmingly positive, with 100% of reviewers highlighting their attention to detail and dedication to customer satisfaction. Clients commend their exceptional project management skills, timely delivery, and effective communication throughout the development process.
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$1,000+< $25 / hr10 - 49Mount Prospect, IL
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See all 2 projectsVerity Techniques is a web development company specializing in web design and custom website development. Reviewers consistently praised their technical proficiency and client-focused approach, leading to enhanced website traffic and user interaction. Positive feedback was prevalent, with suggestions for minor improvements in post-project support. Overall, 100% of reviewers noted impressive project management and timely delivery.
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$10,000+$100 - $149 / hr2 - 9Los Angeles, CA
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See all 2 projectsImpactful Agency is a full-stack web development and web design company noted for building robust digital platforms and enhancing online presence. Their reviews highlight a 100% positive impact on clients' social media efforts and revenue generation. Clients commend their visionary skills and attention to detail, with an ongoing collaboration since 2013.
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Undisclosed$50 - $99 / hr10 - 49Visakhapatnam, India
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See all 1 projectsImaginnovate is a software development company focused on enhancing and streamlining digital platforms. They received overwhelmingly positive feedback for their intuitive design improvements, proactive approach, and technical excellence. Notably, 100% of the reviewers praised their ability to anticipate needs and maintain open communication. The collaboration led to a highly engaging and functional platform, with no significant areas for improvement noted.
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$1,000+$25 - $49 / hr2 - 9Richmond Heights, MO
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See all 1 projectsAO Creatives is a creative agency specializing in social media and content creation, known for its adaptability and strong understanding of client needs. They consistently deliver tailored content with 40% annual social followership growth as a result. Reviewers unanimously praise their creativity and responsiveness, with no areas identified for improvement.
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$5,000+$50 - $99 / hr2 - 9
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See all 9 projectsAlvin Systems is a web development company specializing in custom website and web application development. They have demonstrated expertise in both front-end and back-end development, with 100% of reviewers praising their technical capabilities and project management. Clients notably commend their ability to meet deadlines and provide excellent customer service. The company has proven effective at integrating modern technologies to enhance functionality and user experience.
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$1,000+$50 - $99 / hr2 - 9Gornja Radgona, Slovenia
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See all 4 projectsElmitel is a web development company specializing in custom website development and web application development, including front-end and back-end services. The overall feedback is positive, with clients praising their cost-effectiveness, timely delivery, and project management skills. Approximately 100% of reviewers highlight their responsiveness and innovative approach to problem-solving. However, some note areas for improvement in testing processes.
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$25,000+$100 - $149 / hr2 - 9
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See all 2 projectsCodigo Vision is a software design and development company known for building internal tools and augmenting development capacity. They have been praised for their professional approach, quality work, and effective communication. Generally, feedback is positive, with 100% of reviewers highlighting their flexibility and fair pricing, though some noted occasional project timeline delays due to external factors.
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$10,000+$100 - $149 / hr2 - 9Crawley, England
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See all 1 projectsCygnet Digital is a web development company specializing in custom website development and web application development. They are highly regarded for their meticulous attention to detail and successful project management, achieving significant results such as a 20-fold increase in online revenue for clients. Despite a small team, 100% of the feedback highlights their excellent communication and commitment to quality.
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$5,000+$25 - $49 / hr2 - 9
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See all 3 projectsAxon Solutions is a web development company specializing in Custom Website Development and Web Application Development. Their reviews highlight a strong commitment to client service, with 100% of reviewers appreciating their responsiveness and personal approach. While their development quality is praised, improvement in quality control and testing is noted by 50% of reviewers. They consistently meet deadlines and effectively communicate project details.
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$5,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 2 projectsChimplie is a web development company specializing in custom website development and full-stack web development. Reviews indicate a 100% satisfaction rate, highlighting their effective project management and proactive approach. Clients appreciate Chimplie's quick responsiveness and comprehensive support, particularly in setting up technical specifications and user stories for long-term collaboration. They are noted for offering personalized attention and flexibility in team selection.
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$5,000+$25 - $49 / hr10 - 49
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See all 1 projectsOnixcat is a research services company that specializes in developing platforms for tracking financial, social, and GDP data. They delivered a project for a healthcare company in a timely manner with no issues reported, resulting in satisfied leadership. Approximately 100% of the feedback was positive, emphasizing their cost-effectiveness and reliability despite time zone differences.
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$1,000+$25 - $49 / hr2 - 9
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See all 2 projectsLOOP16 Creative is a multidisciplinary creative agency specializing in web design, social media marketing, SEO, and CRM integration. With 100% positive feedback, reviewers commend their professionalism, creativity, and strategic alignment with business goals. Their work in healthcare marketing stands out, delivering high-quality content that enhances brand visibility and engagement, supported by strong project management and timely delivery.
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$5,000+< $25 / hr50 - 249
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See all 2 projectsWitz-Tech is a web development company specializing in website management and server hosting. They received largely positive feedback, with clients praising their enthusiasm and problem-solving skills, although cost was noted as an area for improvement. Approximately 100% of reviewers highlighted their ability to resolve complex website issues efficiently.
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$10,000+$25 - $49 / hr50 - 249Chennai, India
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See all 3 projectsSciflare Technologies Pvt Ltd is a web development company specializing in web application development and custom website development. Despite their expertise, feedback is mixed, with concerns about project support and pricing mentioned in 100% of reviews. However, they were initially chosen for their high ratings and alignment with client values.
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$1,000+< $25 / hr10 - 49
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See all 2 projectsEntangle Software Private Limited is a web development company specializing in custom website development and full-stack web development. Their overall feedback is overwhelmingly positive, with 100% of reviewers praising their ability to enhance a professional online presence and improve client engagement. Clients commend their strong project management, clear communication, and user-friendly web design.
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$5,000+$25 - $49 / hr10 - 49
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See all 7 projectsHaloid is a software development company specializing in mobile and web application development, particularly known for expertise in Flutter and serverless architectures. Across their reviews, 100% of clients praised their technical proficiency and effective project management. Notably, 80% of reviewers highlighted their strong communication skills and dedication to customer needs, while suggestions for improvement were minimal, with only one reviewer noting a need for more detailed documentation.
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$1,000+< $25 / hr10 - 49Ahmedabad, India
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See all 3 projectsNorth Logics is a web development company renowned for their expertise in custom solutions and strong project management capabilities. With 100% positive feedback, clients consistently praise their ability to tailor services like CRM Salesforce Implementation to fit specific business needs, highlighting their customer-centric approach and technical expertise in handling complex integrations.
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$25,000+$50 - $99 / hr10 - 49València, Spain
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See all 3 projectsWe are Cactus S.L. is a versatile software development company specializing in backend development with Python and Django, complemented by frontend services using AngularJS. Clients frequently commend their adaptability and technical expertise, with 100% satisfaction in communication and integration skills. However, some reviews, comprising a small percentage, note challenges in workload management and time estimation.
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$1,000+< $25 / hr10 - 49Lucknow, India
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See all 1 projectsAkestech Infotech Pvt Ltd is a digital marketing agency specializing in managing digital platforms and developing websites. Feedback highlights their technical expertise, proactive approach, and seamless workflow, with 100% positive reviews. They achieved a 175% target increase in online marketing, indicating their effectiveness in generating business inquiries and enhancing search engine presence.
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$25,000+$25 - $49 / hr10 - 49Dammam, Saudi Arabia
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See all 12 projectsResquadAI is a web development company known for its innovative approach and smooth project management processes. Clients appreciate their ability to foresee challenges and adjust accordingly, resulting in successful outcomes. With positive feedback from 100% of reviewers, ResquadAI efficiently secures new projects, ensuring teams remain engaged and productive.
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$5,000+$50 - $99 / hr2 - 9Tampa, FL
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See all 2 projectsDEVDAT is a web development company specializing in full-stack web development and web application development. The reviews highlight a strong alignment with client values, exceptional project management, and effective communication, with 100% positive feedback emphasizing their timely and budget-conscious project delivery. Clients appreciate their deep understanding of the problem space and collaborative approach.
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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.