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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UndisclosedUndisclosed2 - 9Dallas, TX
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Custom software development firm TechNeeqs LLC was founded in 2010. The team provides Custom Software Development and Mobile App Development.
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$1,000+$50 - $99 / hr10 - 49Pflugerville, TX
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InterCraft Sol is an AI firm located in Islamabad, Pakistan and Pflugerville, Texas. Their services include Artificial Intelligence and IT staff augmentation.
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UndisclosedUndisclosed250 - 999Wilmington, DE
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Keylent Inc, a business intelligence company, was founded in 2010. The agency offers BI & big data consulting & SI and CRM consulting and SI, and is midsize.
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$1,000+$25 - $49 / hr10 - 49Mililani, HI
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Workforce Commerce is a software development firm. They provide Custom Software Development and E-Commerce Development and were established in 2021.
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UndisclosedUndisclosed50 - 249San Francisco, CA
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Uniform Systems, Inc. Is a CRM consulting and SI company. Based in San Francisco, California and Berlin, Germany, their team focuses on CRM consulting and SI and Custom Software Development.
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UndisclosedUndisclosed50 - 249Houston, TX
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TechXi is an UX design agency. In Houston, Texas and Vadodara, India, the company specializes in UX/UI Design and cloud consulting & SI.
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$25,000+$50 - $99 / hr50 - 249Miami, FL
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See all 1 projectsNazaries intelligenia is an API Development company known for delivering MVPs and providing skilled engineering resources. Reviews highlight their adaptability in project management and strong alignment with client needs, with 100% positive feedback on their collaborative approach and ability to facilitate knowledge transfer. Their work enabled a client to attract over 5,000 customers and secure $70 million in funding.
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UndisclosedUndisclosed10 - 49Lehi, UT
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Simsaw LLC is a custom software development company in Lehi, Utah and Mohali, Punjab, India. The team offers Custom Software Development and BI & big data consulting & SI.
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UndisclosedUndisclosedFreelancerOdenton, MD
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Headquartered in Odenton, Maryland, Millennium International Consulting, Inc. Is a custom software development firm. The team provides Custom Software Development and Web Design.
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UndisclosedUndisclosedFreelancerRockville, MD
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Founded in 1990, Words To Web, Inc. Is a social media marketing company. The agency specializes in Social Media Marketing and Content Marketing.
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UndisclosedUndisclosedFreelancerPhoenix, AZ
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Established in 2016, DevOps Global Solutions, LLC is a small DevOps Managed Services company. Their team focuses on DevOps Managed Services and Digital Strategy.
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UndisclosedUndisclosedFreelancerDallas, TX
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Mad App Design is a web design agency located in Dallas, Texas. They specialize in Web Design and Custom Software Development and were founded in 2012.
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UndisclosedUndisclosedFreelancerSpanish Fork, UT
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Branching Software, a web design agency, was established in 2019. The small team provides Web Design and Custom Software Development.
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UndisclosedUndisclosedFreelancerArden, NC
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Super Distros LLC is a website development company. Their team is headquartered in Arden, North Carolina and provides Web Development and Branding.
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UndisclosedUndisclosedFreelancerAshland, OR
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Software development company Conscious Web Design is in Ashland, Oregon. Their services include Custom Software Development and UX/UI Design.
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UndisclosedUndisclosedFreelancerCharlotte, NC
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Craft Blue, LLC is a small custom software development firm. Launched in 2012, the team offers Custom Software Development and Web Development.
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UndisclosedUndisclosedFreelancerLynn, MA
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Digital Strategy company Orientier was founded in 2017. The team specializes in Digital Strategy and Content Marketing.
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UndisclosedUndisclosedFreelancerJohnstown, CO
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Blackbird BI, LLC, a big data analytics company, is located in Johnstown, Colorado. They offer BI & big data consulting & SI and cloud consulting & SI.
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UndisclosedUndisclosedFreelancerPleasant Hill, OH
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Incline Digital LLC is an UX agency founded in 2004. The small team focuses on UX/UI Design and Custom Software Development.
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UndisclosedUndisclosedFreelancerWilmington, DE
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Organic Mindset Agency Inc. Is a Wilmington, Delaware-based social media marketing company. Their services include Social Media Marketing and Conversion Optimization.
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UndisclosedUndisclosedFreelancerNew York, NY
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Web Designer 23 is an Advertising company. They focus on Advertising and Branding and are in New York, New York.
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$25,000+$25 - $49 / hr50 - 249San Antonio, TX
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Established in 1998, Stabilix Corporation is a midsize web development firm based in San Antonio, Texas and Kazhakkoottam, India. Their team offers Web Development and Mobile App Development.
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$5,000+$50 - $99 / hr10 - 49Kirkland, WA
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App development company Cuboid LLC was founded in 2023. The team offers Mobile App Development and Custom Software Development.
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UndisclosedUndisclosed250 - 999Atlanta, GA
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Engineering company JMT Consultants Inc. Is based in Atlanta, Georgia and Winnipeg, Canada. They provide Engineering and Commercial Development.
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UndisclosedUndisclosed50 - 249Greenville, SC
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Mobile application development company QAP Software Solutions focuses on Mobile App Development and IoT development. They were established in 2015.
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UndisclosedUndisclosed250 - 999Overland Park, KS
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UX design company Creative Capsule LLC focuses on UX/UI Design and BI & big data consulting & SI. They are in Verna, India and Overland Park, Kansas.
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UndisclosedUndisclosed250 - 999Plainsboro Township, NJ
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AuroPro Soft Systems is a midsize application development firm headquartered in Plainsboro Township, New Jersey and Kondapur, India. The team provides Mobile App Development and cloud consulting &
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UndisclosedUndisclosed50 - 249Seattle, WA
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Cloud consulting & SI company Yenlo was established in 2007. The firm specializes in cloud consulting & SI and Cybersecurity.
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UndisclosedUndisclosed250 - 999Newport Beach, CA
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Exavalu is an IT strategy consulting company. Launched in 2018, the agency offers IT strategy consulting and CRM consulting and SI.
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UndisclosedUndisclosed250 - 999Denver, CO
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Launched in 2014, Versent is a cloud consulting & SI company. The team offers cloud consulting & SI and Custom Software Development.
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UndisclosedUndisclosed10 - 49Piscataway, NJ
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Established in 2015, Four Bends Pvt Ltd is a small Piscataway, New Jersey-based web design company. Their team provides Web Design and BI & big data consulting & SI.
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UndisclosedUndisclosed250 - 999Orlando, FL
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Simplify3X, a custom software development company, is based in Orlando, Florida and Bengaluru, India. Established in 2016, the team offers Custom Software Development and Application Testing.
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UndisclosedUndisclosed1,000 - 9,999Princeton, NJ
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Headquartered in Princeton, New Jersey and Chennai, India, Maveric Systems Limited is a cloud consulting & SI company. The team specializes in cloud consulting & SI and CRM consulting and SI.
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UndisclosedUndisclosed1,000 - 9,999Perth Amboy, NJ
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Torry Harris Integration Solutions, a data analytics company, is based in Perth Amboy, New Jersey and Bengaluru, India. Their services include BI & big data consulting & SI and cloud consulting &
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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.