Top API Developers
APIs are the connective tissue of modern software — they let your applications talk to payment processors, third-party data sources, mobile clients, and internal microservices. When that integration breaks or scales poorly, the downstream impact is immediate.
API developers on Clutch are vetted through verified client reviews and detailed project histories, giving you a reliable basis for comparison before you hire. These firms handle the full range of API work: RESTful API design and development, GraphQL implementations, API security and authentication, third-party integrations, and legacy system connectivity. Browse software testing companies to vet your API layer after build, or explore the full API developers directory for detailed firm profiles and pricing.
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$75,000+$150 - $199 / hr10 - 49Otford, England
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See all 3 projectsecce. is a prominent API Development company known for its expertise in API web services and interface design. The firm receives overwhelmingly positive feedback, with 100% of reviewers praising their project management and responsiveness. Their customer-centric approach and proficiency in the latest development technologies are frequently highlighted, underscoring their excellence in delivering API solutions.
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$25,000+$100 - $149 / hr2 - 9Hilversum, Netherlands
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See all 6 projectsVolare Software is a full-stack development company renowned for its expertise in web and custom software solutions, employing agile methodologies. Across varied projects, clients commend Volare Software for its effective communication, adaptability, and high-quality deliverables. Approximately 100% of the reviews highlight their transparency, collaborative spirit, and innovative problem-solving capabilities, underscoring a consistent theme of client satisfaction with no significant areas for improvement noted.
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$10,000+$50 - $99 / hr50 - 249Berlin, Germany
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See all 9 projectsProductDock AG is an API Development company providing valuable API solutions, including web service development and REST API programming. The company is commended for its flexibility and commitment, with 80% positive feedback highlighting their alignment with client values and adaptability to changing requirements. Some clients noted initial team fit challenges, but praised the performance once resolved.
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$1,000+< $25 / hr50 - 249New Delhi, India
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See all 10 projectsTRYNOCODE is a technology company specializing in API Development and related services, including UI redesign and fund management functionalities. Reviews highlight a 100% success rate in achieving project goals, with commendations for their commitment and flexibility, though improvements in development testing and documentation are suggested.
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$10,000+$50 - $99 / hr50 - 249
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See all 4 projectsOktana is a company specializing in API Development Services, offering robust backend and RESTful API solutions. Reviews highlight their ability to deliver complex projects on time with high quality, achieving a 90% API integration success rate and a 4.9/5 user feedback rating. Their proactive communication and comprehensive documentation are frequently praised by clients.
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$1,000+$25 - $49 / hr50 - 249Edmond, OK
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See all 2 projectsSkillRev is a custom software development company specializing in solutions for local governments. They are praised for their excellent communication, timely deliveries, and skilled work, with 100% positive feedback from reviewers. Clients highlight their honesty and cultural alignment, noting an impressive project management approach that ensures user-friendly and highly functional outcomes.
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$10,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
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See all 7 projectsKapowai is a technology partner specializing in API Development services, providing comprehensive solutions such as API Integration and RESTful API Development. Their client reviews reflect 100% positive feedback, highlighting their high standard of project management, proactive communication, and ability to deliver enhanced digital experiences, particularly in mobile banking platforms.
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UndisclosedUndisclosed2 - 9
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See all 3 projects84EM is a web development company specializing in creating online ecosystems, custom APIs, and backend solutions. They consistently receive positive feedback for their effective communication, reliability, and technical expertise, with 100% of reviewers highlighting their problem-solving skills and timely project management. Clients commend their ability to deliver successful projects under tight deadlines, contributing significantly to business growth and client satisfaction.
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$25,000+$100 - $149 / hr10 - 49Belfast, Northern Ireland
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See all 2 projectsScaffold Digital is a proficient digital solutions company specializing in app development for public and private sector clients. The reviews indicate a high level of satisfaction, with 100% of feedback being positive, emphasizing their effective project management, responsive communication, and alignment with client values. Clients appreciate their knowledge and ability to deliver user-friendly, well-integrated apps on time and within budget constraints.
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$5,000+$150 - $199 / hr10 - 49Jacksonville, FL
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See all 5 projectsDiscoverTec is a versatile technology and digital services company, offering expertise in app development, SEO, IT support, and data migration. Across their reviews, 100% of clients praised their responsiveness and technical proficiency, with notable achievements including a 98% reduction in customer support tickets for a client. Their collaborative approach and ability to meet deadlines consistently attract high ratings from diverse industries.
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$10,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
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See all 13 projectsKrasty Soft is a company specializing in API development services, including API integration and application programming interface development. They are consistently praised for timely delivery and efficient project management, with 100% of reviewers highlighting their strong communication and problem-solving skills. Clients appreciate their ability to work independently and deliver projects on time and within budget.
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UndisclosedUndisclosed50 - 249
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See all 64 projectsKeshav Infotech is a versatile application development company specializing in API Development Services, including RESTful API Development and integration. The company has received predominantly positive feedback, with approximately 80% of clients praising their development capabilities and cost-effectiveness. Common themes in their reviews highlight their professionalism, impressive project management, and quick responsiveness, although a few clients noted room for improvement in delivery timelines.
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$5,000+$25 - $49 / hr10 - 49Lahore, Pakistan
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See all 5 projectsGreeLogix is a development company specializing in API Development Services, offering solutions such as web service development and RESTful API integration. Reviews highlight a 100% satisfaction rate, emphasizing their excellent customer service, timely delivery, and strong project management. Clients appreciate their dedication and partnership approach, with no significant negative feedback reported.
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$10,000+$25 - $49 / hr50 - 249Chennai, India
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See all 9 projectsVGTS Tech Company specializes in API Development Services, offering robust API Integration and RESTful API Development. Reviews indicate a high level of client satisfaction, with approximately 95% of feedback being positive. Clients frequently commend the company's innovative problem-solving skills and timely project delivery, with over 80% mentioning exceptional project management and technical expertise.
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UndisclosedUndisclosed10 - 49Windsor, Canada
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See all 4 projectsOpreto is a software engineering consultancy specializing in DevOps infrastructure, cloud solutions, and application development. The company receives high praise for its professionalism, responsiveness, and technical expertise, with 100% of reviewers commending its project management and communication. Clients appreciate Opreto's ability to deliver on time and within budget, highlighting their seamless integration with client teams and commitment to quality.
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$1,000+$25 - $49 / hr2 - 9São Paulo, Brazil
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See all 2 projectsPixel Breeders is a development company specializing in web and mobile app development and CRM solutions. Across their reviews, 100% of clients commend their smart, reactive developers and effective project management, highlighting their commitment to delivering quality work and innovative solutions. Their dedication and cultural alignment consistently earn them praise, with no areas identified for improvement.
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$5,000+$50 - $99 / hr2 - 9Søborg, Denmark
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See all 2 projectsLoadstarSoft is a company specializing in API Development Services, with a strong focus on delivering API integration and web service development solutions. Reviews reflect a 100% satisfaction rate, highlighting their professional approach, timely delivery, and commitment to client needs. Notably, 100% of reviewers commend their excellent communication and expertise in API programming.
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$10,000+$25 - $49 / hr50 - 249
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See all 1 projectsuExel is a technology solutions company specializing in app development, website creation, lab information systems, and AI technology. They have received overwhelmingly positive feedback, with clients praising their excellent project management, consistent communication, and team culture. Approximately 100% of reviewers commend their ability to meet milestones and deadlines while providing valuable suggestions for product improvement.
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$10,000+$50 - $99 / hr10 - 49Mykolaiv, Ukraine
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See all 6 projectsDevHired is a web and software development company highly regarded for its expertise in developing and managing websites, content management systems, and custom APIs. With 100% positive feedback, clients consistently highlight the company's technical proficiency, professionalism, and responsiveness. Approximately 80% of reviewers commend DevHired's project management skills and their ability to deliver high-quality, timely solutions. DevHired's commitment to customer satisfaction and effective collaboration is a recurring theme across their reviews.
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$50,000+$150 - $199 / hr10 - 49Broomfield, CO
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See all 1 projectsLatitude 40 Consulting, Inc. is a technology consulting firm that specializes in modernizing business systems and integrating them with modern SaaS platforms. The company has received 100% positive reviews, with clients praising their responsiveness, effective project management, and ability to transform technology stacks and customer experiences. They are highlighted as a trusted partner in achieving business goals.
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$5,000+$25 - $49 / hr2 - 9
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See all 1 projectsSneek Digital SRL is an API Development company known for its full stack expertise and robust API Integration solutions. The reviews are overwhelmingly positive, highlighting the company's technical excellence and commercial acumen, with 100% of reviewers praising their ability to align technical execution with business objectives. Their work significantly improved platform stability and growth, with a notable 162% increase in sales for Orbit4 Group Limited.
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$10,000+$100 - $149 / hr2 - 9Denver, CO
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See all 1 projectsForbina Consulting, LLC is an API Development company that specializes in Application Programming Interface Development and API Integration services. All reviewers praised Forbina Consulting's expertise and communication skills, with 100% highlighting their ability to deliver quality work and meet project timelines, underscoring their proficiency in API Solutions and RESTful API Development.
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$10,000+$200 - $300 / hr50 - 249New York, NY
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See all 2 projectsZertain is an IT consulting firm specializing in CRM development, low-code solutions, and technical support across various platforms, including PHP, WordPress, and Power BI. Reviews highlight their excellent communication and responsiveness, with 100% of clients appreciating their problem-solving and adaptability. Clients consistently report satisfaction with their project outcomes and commend Zertain for their efficient project management and alignment with client values.
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$25,000+$25 - $49 / hr50 - 249London, England
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See all 4 projectsIntegrella is a technology solutions company specializing in API Development Services and systems integration. Reviews highlight their expertise in API solutions, with 100% positive feedback emphasizing their strong culture fit, strategic input, and effective project management. Clients appreciate their ability to function as an extension of their internal teams, delivering scalable and efficient API programming solutions.
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$1,000+Undisclosed50 - 249Deerfield, IL
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See all 1 projectsKleinschmidt Inc. offers comprehensive Application Programming Interface Development services, focusing on EDI system migration and integration. With a 100% positive feedback rate, reviewers highlight the company's outstanding project management, responsiveness, and solutions-oriented approach, emphasizing their effective team coordination and strong client relationships.
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$25,000+$150 - $199 / hr10 - 49Columbus, OH
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See all 3 projectsBase Two is a proficient e-commerce platform and digital marketing support company, specializing in creating scalable systems and HTML5 animated banners. With around 95% positive feedback, clients commend their strong project management, innovative solutions, and technical expertise. Approximately 80% of reviewers highlight improvements in system performance and user experience, underscoring Base Two's effectiveness in enhancing operational efficiency.
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$50,000+$25 - $49 / hr50 - 249Bratislava, Slovakia
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See all 3 projectsSYTOSS is a technology company specializing in API Development Services, including REST API Programming and Web Service Development. Clients appreciate their versatility and good value for cost, though occasional delays were noted. Overall, SYTOSS delivers effective API solutions, with 100% of reviewers highlighting their impressive adaptability.
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$5,000+$25 - $49 / hr10 - 49Downers Grove, IL
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See all 4 projectsProfusion Systems is an API Development services company that excels in creating custom API solutions and integrations. They received positive feedback for their effective project management and ability to meet complex needs within budget and timelines, with 100% of reviewers highlighting their unique solutions and responsiveness.
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$5,000+$50 - $99 / hr10 - 49Ahmedabad, India
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See all 4 projectsAirson Software is a software development company praised for its professionalism, technical expertise, and high-quality deliverables. With over 90% positive feedback, clients appreciate their organized project management and communication-driven approach. Approximately 80% of reviewers highlight their responsiveness and adaptability, ensuring projects are completed on time and within budget, enhancing operational efficiency and stakeholder satisfaction.
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$1,000+$25 - $49 / hr10 - 49Indore, India
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See all 3 projectswebexcellence is a web development company known for building comprehensive websites with a focus on business growth resources and consulting services. According to reviews, 100% of feedback is positive, highlighting their speed, precision, and cost-effectiveness. Their work resulted in increased website traffic, engagement, and improved user experience, with no noted areas for improvement.
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$100,000+< $25 / hr2 - 9Columbus, OH
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See all 1 projectsOntoborn is a small team of Software Engineers having one thing in common - "Passion for Computer Science"! We build World-class Software Solutions for Enterprises, Investment Firms,
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$5,000+$50 - $99 / hr10 - 49Buzin, Croatia
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Small software development firm Kodelab, is located in Buzin, Croatia and Zadar, Croatia. The team offers Custom Software Development and API Development.
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$5,000+$100 - $149 / hr10 - 49Austin, TX
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SIRO Digital Agency is a small user experience company. Launched in 2008, the team provides UX/UI Design and IT strategy consulting.
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$5,000+$25 - $49 / hr2 - 9
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Web Team is a small API Development company. They provide API Development and Web Development and were established in 2022.
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$5,000+$50 - $99 / hr2 - 9Budapest, Hungary
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Founded in 2022, PetakSys is a custom software development company. The company provides Custom Software Development and IT strategy consulting.
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$5,000+$25 - $49 / hr2 - 9Bengaluru, India
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See all 2 projectsMagen Daniel Systems LLP is a technology, software and product development company based in Bengaluru, India. We provide end-to-end development and engineering services for startups, businesses and
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$10,000+< $25 / hr250 - 999Campinas, Brazil
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Art IT - Intelligent Technology is an user experience design agency. Based in Campinas, Brazil, their midsize team offers UX/UI Design and Architectural Design. The company was founded in 2002.
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$5,000+$50 - $99 / hr2 - 9Cape Town, South Africa
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See all 1 projectsDecode Development specializes in providing software solutions that enhance operational efficiency, particularly in the transportation and logistics sector. The company receives high praise for its professional communication, budget-friendly pricing, and timely delivery of projects. Clients particularly appreciate their ability to offer customized solutions that result in measurable improvements in efficiency and cost savings.
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UndisclosedUndisclosed10 - 49Liberty, MO
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Prodjex, a custom software development firm, provide Custom Software Development and E-Commerce Development. They were founded in 2017.
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$10,000+Undisclosed2 - 9Harrogate, England
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Procosoft Ltd, an ERP consulting and SI company, is located in Harrogate, England. Established in 2010, the team specializes in ERP consulting and SI and Custom Software Development.
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$10,000+$100 - $149 / hr10 - 49Schaffhausen, Switzerland
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Luminocity AG, a web development company, was established in 2023. Based in Schaffhausen, Switzerland, the team specializes in Web Development and API Development.
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$5,000+$100 - $149 / hr10 - 49Tulsa, OK
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Seed Technologies is a small website development firm. Founded in 2004, the team offers Web Development and Custom Software Development.
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UndisclosedUndisclosed2 - 9Łódź, Poland
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Solarte is a Łódź, Poland-based custom software development firm. They provide Custom Software Development and Web Development and were launched in 2012.
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$25,000+$150 - $199 / hr2 - 9San Ramon, CA
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Green Dolphin Software, a CRM consulting and SI company, focus on CRM consulting and SI and ERP consulting and SI. They were founded in 2016.
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$10,000+$25 - $49 / hr2 - 9Bengaluru, India
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TerexSoft LLP is a software development firm founded in 2024. The agency focuses on Custom Software Development and Application Management & Support.
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$5,000+$50 - $99 / hr50 - 249Miami, FL
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See all 26 projectsDTEAM is a versatile application development firm that specializes in API Development Services, excelling in complex projects like web development, project management, and quality assurance. Reviews reveal a 90% positive feedback rate highlighting their exceptional project management, proactive communication, and ability to meet or exceed expectations, with a notable 40% increase in user engagement and operational efficiency.
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$25,000+$25 - $49 / hr1,000 - 9,999São Paulo, Brazil
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See all 5 projectsFCamara specializes in API Development, particularly for financial applications. Reviews highlight their effective use of Scrum methodology, timely delivery of project milestones, and alignment with client values and budget. Clients appreciate their skilled resources and cost-effective services, noting their reliability and responsiveness throughout the project lifecycle.
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$10,000+$25 - $49 / hr50 - 249San Antonio, TX
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See all 10 projectsTowa - Nearshore Software Excellence is an API Development Services company known for its Custom Marketplace Development and API Integration expertise. They are highly praised, with 100% positive feedback, for their excellent project management, timely and budget-conscious delivery, and commitment to understanding client needs, consistently exceeding expectations.
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$50,000+$25 - $49 / hr50 - 249Mumbai, India
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See all 33 projectsASTAQC CONSULTING is a software testing company praised for its consistent, quality work and strong project management. They were notably quick and communicative, with 100% of reviewers highlighting their impressive service quality. They offer professional testing services for API Development projects, making them a reliable partner in software testing.
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$50,000+$150 - $199 / hr10 - 49Toronto, Canada
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See all 14 projectsTherefore is a web development company with notable expertise in user experience design and digital strategy, known for their proficiency in Drupal. Feedback from clients is overwhelmingly positive, with 100% expressing satisfaction with Therefore's project management and technical expertise. Clients consistently highlight the company's ability to understand business needs and provide solutions that integrate seamlessly with existing systems, enhancing user engagement and operational efficiency.
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List of the Top 15 API Development Services
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$1,000+$25 - $49 / hr50 - 249Austin, TX
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr10 - 49Webster Groves, MO
Ability to deliver
39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
38.3/40.019.6/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
Ability to deliver
34.1/40.016.8/20 Reviews10/10 Clients & Experience7.3/10 Market PresenceService focus
70% API Development30% Other -
$5,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
35.4/40.017.4/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
30% API Development70% Other -
$25,000+$50 - $99 / hr10 - 49Seattle, WA
Ability to deliver
38.1/40.018.8/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr50 - 249Luzern, Switzerland
Ability to deliver
37.8/40.018.2/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$25 - $49 / hr1,000 - 9,999São Paulo, Brazil
Ability to deliver
36.3/40.016.6/20 Reviews9.9/10 Clients & Experience9.8/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
37.6/40.019.2/20 Reviews10/10 Clients & Experience8.4/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$25 - $49 / hr50 - 249San Antonio, TX
Ability to deliver
36.7/40.017.8/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$100 - $149 / hr10 - 49Denver, CO
Ability to deliver
36.8/40.017.8/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
10% API Development90% Other -
$5,000+< $25 / hr50 - 249Stamford, England
Ability to deliver
36.5/40.018.6/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$150 - $199 / hr10 - 49Nashville, TN
Ability to deliver
36.8/40.018/20 Reviews10/10 Clients & Experience8.8/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$25 - $49 / hr50 - 249Zymna Voda, Ukraine
Ability to deliver
35.9/40.018.2/20 Reviews10/10 Clients & Experience7.7/10 Market PresenceService focus
10% API Development90% Other -
$50,000+$25 - $49 / hr50 - 249Mumbai, India
Ability to deliver
35.8/40.017.8/20 Reviews9.8/10 Clients & Experience8.2/10 Market PresenceService focus
10% API Development90% Other -
UndisclosedUndisclosed10 - 49Draper, UT
Ability to deliver
35.8/40.016.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr10 - 49Irvine, CA
Ability to deliver
35.7/40.016.2/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% API Development90% Other -
$1,000+$100 - $149 / hr2 - 9Vancouver, Canada
Ability to deliver
35.5/40.016.6/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$25 - $49 / hr50 - 249Castrop-Rauxel, Germany
Ability to deliver
35.1/40.018.4/20 Reviews10/10 Clients & Experience6.7/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$25 - $49 / hr10 - 49Barranquilla, Colombia
Ability to deliver
35.3/40.017.4/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
10% API Development90% Other -
$50,000+$150 - $199 / hr10 - 49Toronto, Canada
Ability to deliver
33.6/40.016.2/20 Reviews10/10 Clients & Experience7.4/10 Market PresenceService focus
25% API Development75% Other -
$10,000+$25 - $49 / hr50 - 249Cape Town, South Africa
Ability to deliver
34.9/40.015.8/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr50 - 249Wilder, KY
Ability to deliver
34.8/40.016.4/20 Reviews10/10 Clients & Experience8.4/10 Market PresenceService focus
10% API Development90% Other -
$10,000+< $25 / hr50 - 249Ciudad de México, Mexico
Ability to deliver
34.7/40.016.4/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
10% API Development90% Other -
$50,000+$50 - $99 / hr10 - 49Kyiv, Ukraine
Ability to deliver
34.9/40.017/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
10% API Development90% Other -
$1,000+$100 - $149 / hr10 - 49
Ability to deliver
31/40.017/20 Reviews10/10 Clients & Experience4/10 Market PresenceService focus
45% API Development55% Other -
$50,000+$50 - $99 / hr10 - 49
Ability to deliver
34.7/40.015.8/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr50 - 249Indore, India
Ability to deliver
33.1/40.016.2/20 Reviews10/10 Clients & Experience6.9/10 Market PresenceService focus
20% API Development80% Other -
$10,000+$50 - $99 / hr10 - 49Timișoara, Romania
Ability to deliver
34.6/40.016.8/20 Reviews10/10 Clients & Experience7.8/10 Market PresenceService focus
10% API Development90% Other -
$1,000+Undisclosed50 - 249Sahibzada Ajit Singh Nagar, India
Ability to deliver
34.3/40.017.2/20 Reviews8.6/10 Clients & Experience8.5/10 Market PresenceService focus
10% API Development90% Other
API Development FAQs
Clutch features companies that design, build, and document scalable APIs that power integrations and modern applications quarterly based on a proprietary methodology. The top API development companies for 2026 include:
API developers design, build, and maintain the interfaces that allow software systems to communicate. Most of these dedicated firms offer a multitude of specialized and tailored services, such as:
- Defining data structures and endpoints
- Writing server-side logic
- Implementing authentication protocols like OAuth 2.0 or API keys
- Handling rate limiting and error responses
- Documenting the API for internal or external consumers
Many API developers also handle integration work — connecting your product to third-party services like Stripe, Salesforce, or Twilio.
Recent Clutch pricing data shows that simple third-party integrations generally fall in the $5,000 – $25,000 range, while custom-built API platforms for enterprise applications can exceed $100,000.
Hourly rates for API development firms typically range from $25 – $149 per hour, depending on a range of factors, including the firm's location, seniority, and specialization. Compare pricing against other providers and thoroughly review the cost breakdown to ensure transparency before signing any contracts.
A development firm brings structured processes, dedicated QA, and built-in redundancy. Firms also tend to have formal security practices, code review workflows, and experience managing integrations at scale.
For complex builds involving multiple third-party systems, authentication layers, or ongoing versioning, a company typically offers more stability, accountability, and long-term support capacity than a freelancer.
Match the AP development firm's experience to your technical requirements. A team with a deep REST and Node.js background will serve a different need than one specializing in GraphQL or enterprise middleware.
After that, make sure to review their Clutch profiles for relevant project examples and ask candidates how they handle API versioning, backward compatibility, and security vulnerabilities. Shortlist the top two or three promising partners that meet your initial assessment, then schedule an interview with their team to discuss your project and personally gauge their fit.
Watch for firms that jump straight to implementation without a discovery or design phase — poorly planned APIs are expensive to refactor. Other red flags that you should be aware of include no mention of documentation deliverables, vague answers about authentication and data security, and unwillingness to share code samples or past integration case studies.