Top API Developers in the United States
From Silicon Valley’s cloud innovators to fintech specialists in New York and health-tech hubs in Boston, the United States hosts many of the world’s most sought-after API development teams. A reliable API partner can streamline integrations, unlock new revenue channels, and future-proof your tech stack.
Clutch’s rigorous verification process—detailed client interviews, transparent ratings, and in-depth market data—helps you quickly pinpoint agencies that match your needs. Use filters for hourly rate, industry focus, and location to narrow options and build a shortlist that fits your budget and timeline.
Find more resources here:
• Global Top API Development Companies
• API Development Companies in California
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$1,000+Undisclosed10 - 49New York, NY
Services provided
Fruition Services is a small software development firm located in Sydney, Australia and New Delhi, India. Their services include Custom Software Development and Business Consulting.
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$1,000+$25 - $49 / hr10 - 49Milton, DE
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MarcelTech is a branding company. They are based in Milton, Delaware and Karachi, Pakistan and have small team. They offer Branding and Digital Strategy.
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$1,000+$25 - $49 / hr10 - 49Miami, FL
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Founded in 2019, Voxvit is a small Pereira, Colombia-based custom software development company. Their services include Custom Software Development and Web Development.
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$5,000+$50 - $99 / hr10 - 49Irvine, CA
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GenAI Protos, a Generative AI company, was established in 2024. The team offers Generative AI and Artificial Intelligence and is in Irvine, California.
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$10,000+$50 - $99 / hr10 - 49Redlands, CA
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USDevBrokers is a Redlands, California-based website development firm. They specialize in Web Development and Mobile App Development.
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$1,000+$25 - $49 / hr10 - 49Okemos, MI
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AmatechXoft Inc. Is a small software development firm in Okemos, Michigan and The Bronx, New York. The team focuses on Custom Software Development and Web Development.
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$10,000+< $25 / hr10 - 49Orlando, FL
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See all 7 projectsInfylo Techsolutions Ltd. is a custom software development company specializing in creating tailored digital solutions. With a commitment to quality and a strong understanding of business needs, they have received overwhelmingly positive feedback, with clients praising their responsiveness, professionalism, and ability to improve operational efficiency. Approximately 100% of reviewers noted significant improvements in their business processes and satisfaction with Infylo's services.
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UndisclosedUndisclosed10 - 49Boca Raton, FL
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Zoneomics is an API Development company. The small Boca Raton, Florida-based team provides API Development. The company was established in 2018.
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UndisclosedUndisclosed10 - 49Denver, CO
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Cloverhound is an API Development company. The team provides API Development and IT managed services, and the company is headquartered in Denver, Colorado and Charlotte, North Carolina.
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UndisclosedUndisclosed10 - 49Minneapolis, MN
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Apigician, a small API Development company, is based in Minneapolis, Minnesota. Their services include API Development.
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UndisclosedUndisclosed10 - 49Fargo, ND
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Project Phoenix is a small API Development company founded in 2017. Their services include API Development.
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UndisclosedUndisclosed10 - 49Mason, OH
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Cegna is an API Development company established in 2023. Their team provides API Development.
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UndisclosedUndisclosed10 - 49Franklin, TN
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Founded in 2002, Rustici Software is an API Development company. The team provides API Development and is based in Franklin, Tennessee.
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UndisclosedUndisclosed10 - 49Portland, OR
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Founded in 2004, Periscopic is a business intelligence company and API Development company. The team offers BI & big data consulting & SI and API Development.
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$5,000+$100 - $149 / hr2 - 9Fountain Hills, AZ
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Founded in 2004, Oppositemind Technologies LLC is a small e-commerce development company. Their services include E-Commerce Development and Web Design.
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$25,000+$100 - $149 / hr2 - 9Portland, OR
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FRE Studios is a Portland, Oregon-based software development firm. The team focuses on Custom Software Development and Web Development.
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$5,000+$50 - $99 / hr2 - 9Sheridan, WY
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Ranwip LLC is a Sheridan, Wyoming-based website development company. Launched in 2025, the team provides Web Development and IT strategy consulting.
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$5,000+$100 - $149 / hr2 - 9Spring Hill, TN
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Convergent Software is a custom software development company. The team focuses on Custom Software Development and Web Development and is based in Spring Hill, Tennessee.
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$5,000+$50 - $99 / hr2 - 9Vancouver, WA
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Launched in 2023, BearaByte LLC, a small custom software development firm, is located in Vancouver, Washington. Their team focuses on Custom Software Development and Mobile App Development.
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$5,000+$50 - $99 / hr2 - 9New York, NY
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Neural Lab is an AI Agents company. The New York, New York-based agency was established in 2025. Their services include AI Agents and AI Consulting.
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$5,000+$50 - $99 / hr2 - 9Pittsfield, MA
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Located in Pittsfield, Massachusetts, Codeliq is a small AI company. Their services include Artificial Intelligence and Generative AI.
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$1,000+$50 - $99 / hr2 - 9Schaumburg, IL
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Fortune Infrastructure, LLC is a software development firm founded in 2026. Headquartered in Schaumburg, Illinois, the team provides Custom Software Development and Web Development.
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$5,000+$50 - $99 / hr2 - 9Sheridan, WY
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Code Omnific, a small custom software development firm, is in Sheridan, Wyoming. Their services include Custom Software Development and Web Development.
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$10,000+$25 - $49 / hr50 - 249Brentwood, TN
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ChampSoft Inc. Is a midsize IT staff augmentation company located in Brentwood, Tennessee and Bengaluru, India. The team specializes in IT staff augmentation and Low/No Code Development.
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$5,000+$150 - $199 / hr2 - 9Phoenix, AZ
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BackslashDev LLC is a website development firm established in 2012. Their services include Web Development and Custom Software Development.
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UndisclosedUndisclosed2 - 9Raleigh, NC
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Peddle is a CRM consulting and SI company. Launched in 2022, the team specializes in CRM consulting and SI and Pay Per Click.
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$5,000+$150 - $199 / hr2 - 9Brandon, FL
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Free Thinkers Consulting is a CRM consulting and SI company based in Brandon, Florida and San Diego, California. They focus on CRM consulting and SI and Custom Software Development.
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$10,000+$150 - $199 / hr2 - 9Denver, CO
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Foundry24 is a custom software development firm founded in 2025. The company focuses on Custom Software Development and cloud consulting & SI, and is small.
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Undisclosed$50 - $99 / hr2 - 9San Francisco, CA
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Founded in 2026, Exovara Labs LLC is a small San Francisco, California-based website development company. Their team specializes in Web Development and Custom Software Development.
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$1,000+$100 - $149 / hr2 - 9Douglas, WY
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Clouds Technologies is a mobile app development company. Their small team is based in Douglas, Wyoming. Their services include Mobile App Development and API Development.
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$10,000+Undisclosed2 - 9New York, NY
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Mike Builds Tech is a custom software development firm. Founded in 2018, their team provides Custom Software Development and Mobile App Development.
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$1,000+$50 - $99 / hr2 - 9Fort Mill, SC
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Launched in 2025, Llenroc Tech is a web development company. In Fort Mill, South Carolina, the team provides Web Development and Custom Software Development.
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$10,000+$100 - $149 / hr2 - 9Denver, CO
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Launched in 2026, DevToken.io is a custom software development company. The team offers Custom Software Development and IT strategy consulting and is headquartered in Denver, Colorado.
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$10,000+$50 - $99 / hr2 - 9Sheridan, WY
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AVENY is a custom software development company launched in 2024. The team specializes in Custom Software Development and Web Development.
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Undisclosed$25 - $49 / hr2 - 9Lynden, WA
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AvidZenith LLC, a software development company, provides Custom Software Development and API Development. The company is headquartered in Lynden, Washington and Livermore, California.
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$5,000+$25 - $49 / hr10 - 49Austin, TX
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See all 11 projects2BTech LLC specializes in API Development, including Application Programming Interface Development and RESTful API Development. Client feedback highlights their attention to detail, effective project management, and timely delivery. Overall, clients appreciate their clear communication and commitment to meeting requirements.
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Undisclosed< $25 / hr10 - 49Frisco, TX
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See all 2 projectsWebPatriot specializes in web and mobile app development, including Application Programming Interface Development and AWS server management, with significant experience in cloud-based ERP solutions. Reviews highlight their comprehensive project management, timely delivery, and strong team leadership, leading to substantial business growth for clients. They are praised for their dedication and ownership of projects.
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$1,000+< $25 / hr10 - 49Tampa, FL
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Founded in 2024, Advanced Business Modern Solutions is a social media marketing company. The small team focuses on Social Media Marketing and Search Engine Optimization.
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$10,000+$50 - $99 / hr50 - 249Newark, DE
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Intrinsic Tech is a software development firm. In Newark, Delaware, the agency offers Custom Software Development and Artificial Intelligence.
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UndisclosedUndisclosed1,000 - 9,999Middleton, WI
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Customer Analytics, LLC is an IT strategy consulting company. They were founded in 1993 and offer IT strategy consulting and cloud consulting & SI.
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$50,000+< $25 / hr50 - 249Allen, TX
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IT strategy consulting company Reali Solutions focuses on IT strategy consulting and Custom Software Development. They were founded in 2018.
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UndisclosedUndisclosed1,000 - 9,999Diamond Bar, CA
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Liferay is an Application Testing company established in 2004. The large team focuses on Application Testing and API Development.
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$1,000+$50 - $99 / hr50 - 249Dover, DE
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Strateger AI is an AR/VR development company based in Dover, Delaware. They specialize in AR/VR development and Web Development.
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$1,000+$25 - $49 / hr50 - 249Albany, NY
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Excelstech, a midsize AI development company, is based in Albany, New York. Their services include Artificial Intelligence and Web Development.
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$1,000+$25 - $49 / hr2 - 9Miami, FL
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DEVFL is a custom software development firm founded in 2022. Located in Miami, Florida, the team specializes in Custom Software Development and Web Development.
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$5,000+$25 - $49 / hr10 - 49Jersey City, NJ
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See all 1 projectsOcean Shark offers comprehensive services including website development, mobile app development, custom design, and digital marketing. The reviews highlight their exceptional project management, punctuality, and client-centric approach. Clients commend Ocean Shark for their innovative solutions and responsiveness, appreciating their ability to deliver high-quality results that align with business goals, while noting the potential for enhanced client training on new technologies.
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$5,000+$25 - $49 / hr10 - 49Humble, TX
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Novo Labs is a custom software development company founded in 2022. The small team offers Custom Software Development and Web Development.
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$1,000+$50 - $99 / hr10 - 49Diamond Bar, CA
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Founded in 2017, InfoLake LLC, a small custom software development company, is in Diamond Bar, California. Their team specializes in Custom Software Development and Web Development.
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$1,000+$50 - $99 / hr10 - 49Carrollton, TX
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Infinity Web Coders, a small web design agency, is located in Carrollton, Texas. Their services include Web Design and Web Development.
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$5,000+$25 - $49 / hr10 - 49Santa Monica, CA
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Sofrix is a software development company specializing in mobile and web app development, known for their technical expertise and comprehensive service offerings. They consistently deliver high-performance, scalable solutions, achieving a 40% increase in user engagement and maintaining a 99.9% uptime. With 100% positive feedback, clients commend their agile project management and excellent communication.
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List of the Top 15 United States API Development Services
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$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 -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
38.1/40.019.2/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% API Development90% 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
37.3/40.018/20 Reviews10/10 Clients & Experience9.3/10 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 -
$1,000+$100 - $149 / hr10 - 49Denver, CO
Ability to deliver
36.5/40.017.4/20 Reviews10/10 Clients & Experience9.1/10 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 -
$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 - 249Coral Gables, FL
Ability to deliver
34.7/40.016.4/20 Reviews10/10 Clients & Experience8.3/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$50 - $99 / hr50 - 249Fairfield, CT
Ability to deliver
34.1/40.016.4/20 Reviews9.2/10 Clients & Experience8.5/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$100 - $149 / hr10 - 49Houston, TX
Ability to deliver
33.4/40.017.2/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
15% API Development85% Other -
$50,000+$50 - $99 / hr10 - 49San Francisco, CA
Ability to deliver
33.9/40.016/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$200 - $300 / hr10 - 49Miami, FL
Ability to deliver
32.1/40.016.2/20 Reviews9.7/10 Clients & Experience6.2/10 Market PresenceService focus
25% API Development75% Other -
$25,000+Undisclosed50 - 249Blue Ash, OH
Ability to deliver
31.5/40.016.8/20 Reviews7.5/10 Clients & Experience7.2/10 Market PresenceService focus
25% API Development75% Other -
$25,000+$50 - $99 / hr250 - 999Plano, TX
Ability to deliver
32.6/40.015.6/20 Reviews10/10 Clients & Experience7/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$150 - $199 / hr50 - 249Los Angeles, CA
Ability to deliver
33.2/40.016.8/20 Reviews9.6/10 Clients & Experience6.8/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr10 - 49Chicago, IL
Ability to deliver
32.8/40.016.4/20 Reviews9.8/10 Clients & Experience6.6/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr10 - 49Sheridan, WY
Ability to deliver
32.7/40.017.2/20 Reviews10/10 Clients & Experience5.5/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$100 - $149 / hr10 - 49Oakbrook Terrace, IL
Ability to deliver
31.8/40.016.6/20 Reviews10/10 Clients & Experience5.2/10 Market PresenceService focus
15% API Development85% Other -
$10,000+$150 - $199 / hr10 - 49Plano, TX
Ability to deliver
32.3/40.016.4/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
10% API Development90% Other -
$1,000+$50 - $99 / hr10 - 49Provo, UT
Ability to deliver
32.2/40.016.2/20 Reviews8.1/10 Clients & Experience7.9/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr50 - 249Davie, FL
Ability to deliver
32/40.017.2/20 Reviews9.6/10 Clients & Experience5.2/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$100 - $149 / hr10 - 49Raleigh, NC
Ability to deliver
30.2/40.016.2/20 Reviews10/10 Clients & Experience4/10 Market PresenceService focus
25% API Development75% Other -
$25,000+$150 - $199 / hr10 - 49Atlanta, GA
Ability to deliver
31.8/40.016.4/20 Reviews8.9/10 Clients & Experience6.5/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$25 - $49 / hr10 - 49Naperville, IL
Ability to deliver
31.5/40.016.4/20 Reviews8.3/10 Clients & Experience6.8/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$100 - $149 / hr50 - 249Austin, TX
Ability to deliver
30.2/40.019/20 Reviews6/10 Clients & Experience5.2/10 Market PresenceService focus
15% API Development85% Other -
$5,000+$25 - $49 / hr10 - 49New York, NY
Ability to deliver
30.3/40.016.4/20 Reviews9.9/10 Clients & Experience4/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$50 - $99 / hr10 - 49Fort Wayne, IN
Ability to deliver
30.3/40.016.4/20 Reviews7.9/10 Clients & Experience6/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr10 - 49Houston, TX
Ability to deliver
29.5/40.016.2/20 Reviews5.8/10 Clients & Experience7.5/10 Market PresenceService focus
15% API Development85% Other
United States API Development FAQs
U.S. agencies work at the intersection of leading cloud platforms (AWS, Google Cloud, Microsoft Azure) and fast-moving industries such as fintech and SaaS. Local partners offer:
• Proximity to major tech conferences and venture networks
• Deep familiarity with U.S. compliance standards like HIPAA, SOC 2, and PCI-DSS
• Overlapping time zones for smoother collaboration if your team is also U.S.-based
Whether you need a public API to grow an ecosystem or a private integration to unite legacy systems, U.S. developers can leverage domestic market insights and top-tier talent to accelerate delivery.
API specialists in the U.S. span nearly every vertical. Common sectors include:
• Fintech and banking (payment gateways, open banking)
• E-commerce and retail (product feeds, inventory sync)
• Healthcare (FHIR-compliant patient data exchange)
• Logistics and mobility (real-time tracking APIs)
• Media and entertainment (streaming and rights management)
Niche expertise—such as blockchain, IoT, or AI/ML—can often be found in regional clusters like Austin, Seattle, and San Francisco.
- Define success metrics—throughput, latency, user adoption.
- Shortlist agencies with domain case studies similar to your use case.
- Verify security credentials (SOC 2, ISO 27001) and DevOps tooling.
- Request an architecture proposal and proof-of-concept timeline.
- Check Clutch reviews for project management style and communication transparency.
A brief technical interview with the proposed lead architect often reveals how well the team understands your stack and business goals.
• No clear versioning or documentation plan
• Reliance on proprietary middleware that locks you in
• Vague estimates without a discovery phase
• Limited experience with automated testing, CI/CD, or monitoring
• Inability to explain compliance implications for your industry
Choosing a partner who prioritizes scalability, security, and open standards will save costly rewrites down the road.
Hourly rates usually range from $120 – $225, reflecting senior talent and higher operating costs in major tech cities. Typical project budgets break down as:
- Simple REST or GraphQL endpoint: $15,000 – $30,000
- Mid-sized integration layer (multiple third-party systems): $40,000 – $90,000
- Enterprise-grade, high-availability API platform: $100,000+
Many agencies offer discovery sprints or fixed-price MVP packages to de-risk the scope before long-term engagement.