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
-
$10,000+$50 - $99 / hr10 - 49Newark, DE
Services provided
In Newark, Delaware, FlowKit from Spontlr Inc. Is a web development firm. The team focuses on Web Development and Mobile App Development.
Read more -
$5,000+$25 - $49 / hr10 - 49Raleigh, NC
Services provided
Ignituz Global is a Product Design company. They specialize in Product Design and Custom Software Development and are located in Raleigh, North Carolina.
Read more -
$1,000+$25 - $49 / hr10 - 49Sugar Land, TX
Services provided
AI Agents company InnovaSynx is based in Sugar Land, Texas. Their services include AI Agents and API Development.
Read more -
UndisclosedUndisclosed2 - 9Houston, TX
Services provided
Founded in 2005, Bizteon Software, a small IT strategy consulting company, is headquartered in Houston, Texas. Their team offers IT strategy consulting and BI & big data consulting & SI.
Read more -
$5,000+$200 - $300 / hr10 - 49Blue Bell, PA
Services provided
Based in Blue Bell, Pennsylvania, Hammer Dev is a big data company. The team offers BI & big data consulting & SI and Custom Software Development.
Read more -
$5,000+$150 - $199 / hr10 - 49Kirkland, WA
Services provided
Facet Digital, LLC is a website development firm founded in 2013. The small team offers Web Development and Mobile App Development.
Read more -
$5,000+$25 - $49 / hr10 - 49Destin, FL
Services provided
Ostryx is a Destin, Florida-based user experience agency. The team offers UX/UI Design and Web Development.
Read more -
$5,000+Undisclosed10 - 49Charlotte, NC
Services provided
Ardor IT Solutions, an AI Consulting company, is headquartered in Charlotte, North Carolina. The team offers AI Consulting and API Development.
Read more -
$1,000+$50 - $99 / hr2 - 9Omaha, NE
Services provided
BMVA Digital is a branding agency. Their small team is based in Omaha, Nebraska. Their services include Branding and Social Media Marketing.
Read more -
$10,000+$150 - $199 / hr2 - 9Clearwater, FL
Services provided
Byte Bot is a software development company. They offer Custom Software Development and Web Development and are headquartered in Clearwater, Florida.
Read more -
$1,000+$100 - $149 / hr2 - 9Union, NJ
Services provided
Web Bits is an API Development company launched in 2014. The company focuses on API Development and Low/No Code Development, and is small.
Read more -
UndisclosedUndisclosed50 - 249New York, NY
Services provided
Midsize API Development company Limlat Inc, is headquartered in New York, New York. Their services include API Development and Mobile App Development.
Read more -
$1,000+$25 - $49 / hr2 - 9New York, NY
Services provided
Appxylo, a website development company, was established in 2023. In New York, New York, the team focuses on Web Development and Mobile App Development.
Read more -
$10,000+$100 - $149 / hr2 - 9Cedar City, UT
Services provided
Coat Rack Web Services, LLC is a custom software development firm. The team specializes in Custom Software Development and Web Development, and the agency is located in Cedar City, Utah.
Read more -
$1,000+$100 - $149 / hr2 - 9Fort Mill, SC
Services provided
IT strategy consulting company Freeman Tech was launched in 2022. In Fort Mill, South Carolina, the team specializes in IT strategy consulting and cloud consulting & SI.
Read more -
Undisclosed$100 - $149 / hr2 - 9Hudsonville, MI
Services provided
Agile Software Solutions is a software development company. Located in Hudsonville, Michigan, their team specializes in Custom Software Development and Web Development.
Read more -
$5,000+$25 - $49 / hr2 - 9Orlando, FL
Services provided
DevHub Masters LLC is a small software development firm located in Orlando, Florida. Their services include Custom Software Development and Web Development.
Read more -
$1,000+< $25 / hr2 - 9Ellicott City, MD
Services provided
Booliant is a cloud consulting & SI company. The small Ellicott City, Maryland-based team specializes in cloud consulting & SI and IT staff augmentation. The agency was founded in 2025.
Read more -
$1,000+$50 - $99 / hr2 - 9West Palm Beach, FL
Services provided
Tech Guys is a custom software development company. They are located in West Palm Beach, Florida and have small team. They provide Custom Software Development and Web Development.
Read more -
$1,000+$100 - $149 / hr2 - 9Seattle, WA
Services provided
AI Consulting company 3rd Interval is in Seattle, Washington. The team provides AI Consulting and Custom Software Development.
Read more -
Undisclosed$25 - $49 / hr2 - 9Parkland, WA
Services provided
Elevate Digital is a small software development company. Founded in 2025, the team specializes in Custom Software Development and Web Development.
Read more -
UndisclosedUndisclosed2 - 9Irvine, CA
Services provided
Kare Information Technologies is a software development company established in 2026. The team offers Custom Software Development and Web Development.
Read more -
$5,000+$150 - $199 / hr2 - 9Austin, TX
Services provided
Software development firm M Media provides Custom Software Development and API Development. They are located in Austin, Texas.
Read more -
$1,000+$25 - $49 / hr2 - 9Sheridan, WY
Services provided
Scarabite is a software development firm. In Thessaloniki, Greece and Sheridan, Wyoming, the company was established in 2025. Their services include Custom Software Development and API Development.
Read more -
$50,000+$100 - $149 / hr2 - 9Philadelphia, PA
Services provided
Beneficial Enterprise Group.com is a website development company. They focus on Web Development and API Development and were established in 2026. The agency is in Philadelphia, Pennsylvania.
Read more -
$1,000+$25 - $49 / hr2 - 9Richmond, IN
Services provided
Founded in 2026, Batteries Included, LLC is an application development firm. The team provides Mobile App Development and Custom Software Development.
Read more -
$25,000+$200 - $300 / hr50 - 249Phoenix, AZ
Services provided
Established in 2019, MindQuest Technology Solutions Llc is a Cybersecurity company. Their team focuses on Cybersecurity and IT managed services.
Read more -
$5,000+$25 - $49 / hr50 - 249Miami, FL
Services provided
BurjSoft, LLC is a software development company in Miami, Florida. Their services include Custom Software Development and Artificial Intelligence.
Read more -
$1,000+$100 - $149 / hr2 - 9Locust Grove, VA
Services provided
Camna, a website development firm, was launched in 2006. The team provides Web Development and E-Commerce Development.
Read more -
Undisclosed$25 - $49 / hr2 - 9Los Angeles, CA
Services provided
Plexipi, an Advertising company, was launched in 2025. The company provides Advertising and Direct Marketing, and is small.
Read more -
$1,000+$50 - $99 / hr2 - 9Laguna Beach, CA
Services provided
PAK Digital is a custom software development company. They focus on Custom Software Development and E-Commerce Development and are in Laguna Beach, California.
Read more -
$1,000+$25 - $49 / hr50 - 249Ojai, CA
Services provided
See all 13 projectsMagnusMinds IT Solution LLP is a versatile technology solutions provider specializing in web development, database management, UI/UX design, and software development. Across their reviews, 100% of clients praise their responsiveness and flexibility. They are commended for their comprehensive service offerings, meeting deadlines, and exceeding expectations in project delivery and client satisfaction, with no significant areas for improvement noted by clients.
-
Undisclosed$25 - $49 / hr10 - 49Amesbury, MA
Services provided
TransformingDigitally is an IoT development company. They were founded in 2021 and offer IoT development and API Development.
Read more -
$1,000+$25 - $49 / hr10 - 49Casper, WY
Services provided
Webkrafterz is a custom software development company launched in 2014. The company provides Custom Software Development and Web Development, and is small.
Read more -
UndisclosedUndisclosed10 - 49Worcester, MA
Services provided
Page Authority, a social media marketing company, was launched in 2020. The team offers Social Media Marketing and Search Engine Optimization and is located in Worcester, Massachusetts.
Read more -
$5,000+$150 - $199 / hr10 - 49Boston, MA
Services provided
Established in 2023, Samprand is a web design agency. In Boston, Massachusetts and Madrid, Spain, the team focuses on Web Design and UX/UI Design.
Read more -
$1,000+< $25 / hr10 - 49Phoenix, AZ
Services provided
TKDEVS is a software development company. The team is located in Phoenix, Arizona, and their services include Custom Software Development and API Development.
Read more -
$10,000+$100 - $149 / hr10 - 49Los Angeles, CA
Services provided
DreamViz Software Development LLC is an app development firm. They were established in 2012 and offer Mobile App Development and Blockchain.
Read more -
$5,000+$25 - $49 / hr10 - 49Dallas, TX
Services provided
Squadron Technology Pvt Ltd is an IT managed services company launched in 2020. In Dallas, Texas and Ahmedabad, India, the team provides IT managed services and BI & big data consulting & SI.
Read more -
Undisclosed$100 - $149 / hr10 - 49Denver, CO
Services provided
Established in 2011, WP Sprints is a web development company. The team specializes in Web Development and Web Design and is located in Denver, Colorado and Portland, Oregon.
Read more -
UndisclosedUndisclosed10 - 49Wilmington, DE
Services provided
Cloud consulting & SI company OutworkTech Inc. Was founded in 2018. The firm focuses on cloud consulting & SI and Custom Software Development, and is small.
Read more -
$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.
Read more -
$1,000+$25 - $49 / hr10 - 49Milton, DE
Services provided
MarcelTech is a branding company. They are based in Milton, Delaware and Karachi, Pakistan and have small team. They offer Branding and Digital Strategy.
Read more -
$1,000+$25 - $49 / hr10 - 49Miami, FL
Services provided
Founded in 2019, Voxvit is a small Pereira, Colombia-based custom software development company. Their services include Custom Software Development and Web Development.
Read more -
$5,000+$50 - $99 / hr10 - 49Irvine, CA
Services provided
GenAI Protos, a Generative AI company, was established in 2024. The team offers Generative AI and Artificial Intelligence and is in Irvine, California.
Read more -
$10,000+$50 - $99 / hr10 - 49Redlands, CA
Services provided
USDevBrokers is a Redlands, California-based website development firm. They specialize in Web Development and Mobile App Development.
Read more -
$1,000+$25 - $49 / hr10 - 49Okemos, MI
Services provided
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.
Read more -
$5,000+$100 - $149 / hr10 - 49Raleigh, NC
Services provided
Creator Systems LLC (AX-BOX) is a software development company. The team focuses on Custom Software Development and Web Development and is in Raleigh, North Carolina.
Read more -
$10,000+$25 - $49 / hr10 - 49Seattle, WA
Services provided
E-commerce development company Anora.dev is headquartered in Seattle, Washington. The team provides E-Commerce Development and API Development.
Read more -
$10,000+< $25 / hr10 - 49Orlando, FL
Services provided
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.
Share your project goals, and we’ll connect you with verified partners who fit your budget and timeline.
Get My Matches
Tell us what you need — we’ll match you with top agencies in minutes.
Get My MatchesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of the Top 15 United States API Development Services
-
$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+$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 -
$1,000+$100 - $149 / hr10 - 49Denver, CO
Ability to deliver
36.7/40.017.6/20 Reviews10/10 Clients & Experience9.1/10 Market PresenceService focus
10% API Development90% Other -
UndisclosedUndisclosed10 - 49Draper, UT
Ability to deliver
36.5/40.017.4/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$50 - $99 / hr50 - 249Miami, FL
Ability to deliver
36.3/40.017.4/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr10 - 49Irvine, CA
Ability to deliver
36.1/40.016.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$150 - $199 / hr50 - 249Wilder, KY
Ability to deliver
35.4/40.017/20 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 -
$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 -
$5,000+$100 - $149 / hr10 - 49Houston, TX
Ability to deliver
33/40.016.8/20 Reviews10/10 Clients & Experience6.2/10 Market PresenceService focus
15% API Development85% 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 -
$5,000+$25 - $49 / hr50 - 249Davie, FL
Ability to deliver
32.4/40.017.6/20 Reviews9.6/10 Clients & Experience5.2/10 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 -
$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 -
$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 -
$10,000+$50 - $99 / hr2 - 9Sheridan, WY
Ability to deliver
29.9/40.016.6/20 Reviews8.8/10 Clients & Experience4.6/10 Market PresenceService focus
10% API Development90% Other -
$50,000+$200 - $300 / hr10 - 49San Diego, CA
Ability to deliver
28.6/40.014.6/20 Reviews8.4/10 Clients & Experience5.6/10 Market PresenceService focus
20% API Development80% Other -
$5,000+$150 - $199 / hr10 - 49Jacksonville, FL
Ability to deliver
28.8/40.016.4/20 Reviews6.7/10 Clients & Experience5.7/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$25 - $49 / hr50 - 249Parker, CO
Ability to deliver
28.3/40.016.2/20 Reviews6.9/10 Clients & Experience5.2/10 Market PresenceService focus
10% API Development90% 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.