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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$5,000+$25 - $49 / hr250 - 999Austin, TX
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Midsize IT staff augmentation company Epidata SA, is in ACE, Argentina and Las Condes, Chile. The team provides IT staff augmentation and IT managed services.
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UndisclosedUndisclosed10 - 49St. Petersburg, FL
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Established in 2022, Bit Solution Group LLC, a small API Development company, is located in St. Petersburg, Florida. Their team provides API Development and cloud consulting & SI.
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UndisclosedUndisclosed50 - 249Sweet Springs, MO
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MCH Strategic Data, a midsize CRM consulting and SI company, is located in Sweet Springs, Missouri and Overland Park, Kansas. Their services include CRM consulting and SI and Market Research.
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UndisclosedUndisclosed50 - 249Phoenix, AZ
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DDC-I is a software development firm. Founded in 1980, the company is in Phoenix, Arizona. Their services include Custom Software Development and IT managed services.
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UndisclosedUndisclosedFreelancerColumbia, MD
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PUSH 2 STREAM Inc. Is a video production agency founded in 2020. Their services include Video Production and Custom Software Development.
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UndisclosedUndisclosed50 - 249Alpharetta, GA
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GRIFFIN Global Technologies, LLC is a cloud consulting & SI company established in 2009. The team specializes in cloud consulting & SI and CRM consulting and SI.
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UndisclosedUndisclosed50 - 249New Orleans, LA
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Custom software development firm Carrollton Enterprise Services was launched in 2003. The team specializes in Custom Software Development and Business Consulting.
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UndisclosedUndisclosed50 - 249San Mateo, CA
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Marvel Marketers is a branding firm. The San Mateo, California-based team provides Branding and Marketing Strategy.
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UndisclosedUndisclosed50 - 249San Jose, CA
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Infobahn Softworld Inc is a cloud consulting & SI company. The agency is based in Toronto, Canada and San Jose, California. Their team focuses on cloud consulting & SI and Application Testing.
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UndisclosedUndisclosed50 - 249Meridian charter Township, MI
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RICEFW Technologies Inc is a Meridian charter Township, Michigan-based data analytics company. They focus on BI & big data consulting & SI and cloud consulting & SI and were launched in 2010.
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UndisclosedUndisclosed50 - 249Bloomington, MN
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C2 Solutions is a Digital Strategy company in Bloomington, Minnesota. They offer Digital Strategy and UX/UI Design.
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UndisclosedUndisclosed50 - 249Phoenix, AZ
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Valore Partners LLC is a software development company launched in 2014. Their services include Custom Software Development and Computer Engineering.
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UndisclosedUndisclosed50 - 249Miami, FL
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Market Research company Amberdata was launched in 2017. The firm offers Market Research and Blockchain.
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UndisclosedUndisclosed50 - 249Park Ridge, IL
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Sales Outsourcing company Policy Claim Management International (PCMI) is located in Park Ridge, Illinois. They provide Sales Outsourcing and Market Research.
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UndisclosedUndisclosed50 - 249Rochester, NY
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Data Brilliance Software is a social media marketing agency. The firm is headquartered in Rochester, New York. Their services include Social Media Marketing and Search Engine Optimization.
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Undisclosed$25 - $49 / hr50 - 249Westerville, OH
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Cloud consulting & SI company URU Systems was established in 2023. The firm provides cloud consulting & SI and IT staff augmentation.
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Undisclosed$50 - $99 / hr50 - 249Miami, FL
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See all 4 projectsAres Group Business Consulting is a specialized firm offering API Development Services, including RESTful API Development and API Integration solutions. Their reviews reflect a 100% positive sentiment, highlighting their expertise in automating business processes and improving operational efficiency. Notably, 50% of reviewers appreciated their deep understanding of client needs and proactive approach in delivering transformative API Solutions.
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UndisclosedUndisclosed50 - 249Rehoboth Beach, DE
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EnoviQ Technologies is a Rehoboth Beach, Delaware-based API Development company. They offer API Development and DevOps Managed Services.
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UndisclosedUndisclosed50 - 249Milwaukee, WI
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Borak Solutions LLC is an IT strategy consulting company located in Milwaukee, Wisconsin. Founded in 2012, the team focuses on IT strategy consulting and Cybersecurity.
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UndisclosedUndisclosed2 - 9Tamarac, FL
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API Development company Avalon Development Inc. Is headquartered in Tamarac, Florida. They provide API Development and Custom Software Development.
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UndisclosedUndisclosed2 - 9Longwood, FL
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Based in Longwood, Florida, CitrusTek is an API Development company. Founded in 2018, the team specializes in API Development and Web Design.
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UndisclosedUndisclosed2 - 9Denver, CO
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Minerva Group, LLC, an API Development company, is based in Denver, Colorado. Founded in 2015, the team focuses on API Development and UX/UI Design.
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UndisclosedUndisclosed2 - 9Roseville, MN
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IkonicSoft is a small API Development company in Roseville, Minnesota. The team specializes in API Development and Mobile App Development.
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$25,000+$25 - $49 / hr10 - 49Chandler, AZ
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BRIGHTPEERS is a website development company founded in 2023. The firm provides Web Development and Custom Software Development, and is small.
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UndisclosedUndisclosed10 - 49New York, NY
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Launched in 2005, United Holdings Group is a Mobile & App Marketing company. The agency specializes in Mobile & App Marketing and Search Engine Optimization, and is small.
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UndisclosedUndisclosed10 - 49Seattle, WA
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Cloud consulting & SI company Marici Technology Solutions provides cloud consulting & SI and ECM consulting and SI. They are headquartered in Seattle, Washington.
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UndisclosedUndisclosed10 - 49Chandler, AZ
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Headquartered in Chandler, Arizona, STEPS Talent is a small Digital Strategy company. Their services include Digital Strategy and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Rockville, MD
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In Rockville, Maryland, Optimoz, Inc. Is a big data analytics company. Established in 2013, the team provides BI & big data consulting & SI and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Columbia, MD
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Mokxa Technologies, LLC is a Cybersecurity company established in 2013. Their services include Cybersecurity and UX/UI Design.
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UndisclosedUndisclosed10 - 49Westminster, MD
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Open Professional Group is a Westminster, Maryland-based branding firm. Their services include Branding and UX/UI Design.
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UndisclosedUndisclosed10 - 49Surprise, AZ
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API Development is an application development firm. The Surprise, Arizona-based company focuses on Mobile App Development and Digital Strategy.
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UndisclosedUndisclosed10 - 49Austin, TX
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Cazton is a custom software development company. Founded in 2013, the company is in Atlanta, Georgia and Austin, Texas. Their services include Custom Software Development and Artificial
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UndisclosedUndisclosed10 - 49Atlanta, GA
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Ntegral Inc. Is a small cloud consulting & SI company. Launched in 2002, the team offers cloud consulting & SI and Custom Software Development.
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UndisclosedUndisclosed10 - 49Alpharetta, GA
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TalenTech Global Solutions is a cloud consulting & SI company. They were established in 2017 and provide cloud consulting & SI and Mobile App Development.
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UndisclosedUndisclosed10 - 49Rogers, AR
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IT strategy consulting company mOOkstr was founded in 2009. The small team specializes in IT strategy consulting and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49Richmond, VA
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Headquartered in Richmond, Virginia, Fuel Digital LLC is a web development company. The team specializes in Web Development and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Orem, UT
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Established in 2020, DevPipeline is a software development firm. The team specializes in Custom Software Development and UX/UI Design and is headquartered in Orem, Utah.
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UndisclosedUndisclosed10 - 49Columbia, TN
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Devvly is a small Columbia, Tennessee-based custom software development company. Their services include Custom Software Development and Mobile App Development.
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UndisclosedUndisclosed10 - 49Holland, MI
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Thesis Technologies is a small business intelligence company. They provide BI & big data consulting & SI and CRM consulting and SI and were established in 2013.
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UndisclosedUndisclosed10 - 49Tomball, TX
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Ortus Solutions, Corp. Is a Tomball, Texas-based user experience design agency. The team specializes in UX/UI Design and Web Development.
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UndisclosedUndisclosed10 - 49Frisco, TX
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Founded in 2016, Kreative Core Technologies is an ERP consulting and SI company. Headquartered in Frisco, Texas, the team specializes in ERP consulting and SI and IT strategy consulting.
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UndisclosedUndisclosed10 - 49San Jose, CA
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Watermelon Software Inc, an Application Testing company, is in San Jose, California and Singapore. Their services include Application Testing and API Development.
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UndisclosedUndisclosed10 - 49Dallas, TX
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Cybersecurity company Epic.io is headquartered in Dallas, Texas. The team provides Cybersecurity and IT managed services.
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UndisclosedUndisclosed10 - 49San Ramon, CA
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Cidersoft is a web design company. The San Ramon, California-based team provides Web Design and UX/UI Design.
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UndisclosedUndisclosed10 - 49Cincinnati, OH
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Bloomy Technologies is a social media marketing firm. They offer Social Media Marketing and Content Marketing and are in Cincinnati, Ohio.
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UndisclosedUndisclosed10 - 49Las Vegas, NV
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Established in 1995, Contractor Website Services is a small Las Vegas, Nevada-based SEO agency. Their services include Search Engine Optimization and Content Marketing.
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UndisclosedUndisclosed10 - 49San Diego, CA
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Creatable is a social media marketing agency. Located in San Diego, California, the company focuses on Social Media Marketing and Video Marketing.
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UndisclosedUndisclosed10 - 49San Francisco, CA
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Rivi is an user experience design agency founded in 2017. Their team provides UX/UI Design and Product Design.
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UndisclosedUndisclosed10 - 49Scottsdale, AZ
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Exact Payments is a small Back Office Outsourcing company launched in 1999. Their team specializes in Back Office Outsourcing and Custom Software Development.
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Undisclosed< $25 / hr2 - 9Sheridan, WY
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Sabi LLC is a Sheridan, Wyoming-based custom software development company. Founded in 2021, the team provides Custom Software Development and Web Development.
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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.