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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UndisclosedUndisclosed2 - 9Glendale, CA
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Established in 2010, toKernel is a web design agency. Their services include Web Design and Custom Software Development.
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UndisclosedUndisclosed2 - 9
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IDevelop Software Solutions is a small Lake Oswego, Oregon-based CRM consulting and SI company. Their services include CRM consulting and SI and Custom Software Development.
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UndisclosedUndisclosed2 - 9
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Software development firm Columbia Ops LLC was founded in 2015. The team specializes in Custom Software Development and Compliance Consulting.
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UndisclosedUndisclosed2 - 9St. Louis, MO
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In St. Louis, Missouri, Reikam Labs is a small web design agency. The team offers Web Design and UX/UI Design.
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UndisclosedUndisclosed2 - 9Lexington, KY
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Rocker is a small Lexington, Kentucky-based IT strategy consulting company. The team provides IT strategy consulting and Web Development.
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UndisclosedUndisclosed2 - 9
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DevXT is a small software development company launched in 2006. Their team specializes in Custom Software Development and Web Development.
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UndisclosedUndisclosed2 - 9San Juan Capistrano, CA
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Located in San Juan Capistrano, California, SwiftLead is a small web design company. Their services include Web Design and cloud consulting & SI.
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UndisclosedUndisclosed2 - 9Red Bank, NJ
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Three-X-Square is a cloud consulting & SI company. They offer cloud consulting & SI and Mobile App Development and were established in 2017.
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UndisclosedUndisclosed2 - 9Murfreesboro, TN
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AllyCloud is a software development company. They are in Murfreesboro, Tennessee and have small team. They provide Custom Software Development and Web Development.
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UndisclosedUndisclosed2 - 9
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Launched in 2016, Nihilo Development is a website development firm. The company specializes in Web Development and Mobile App Development, and is small.
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UndisclosedUndisclosed2 - 9Dublin, Ireland
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Serenity Dojo is an Application Testing company. They offer Application Testing and Custom Software Development and were established in 2017.
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UndisclosedUndisclosed2 - 9
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Launched in 2018, FIFO Engineering, LLC is a big data analytics company. Headquartered in Lake Oswego, Oregon, the team offers BI & big data consulting & SI and cloud consulting & SI.
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UndisclosedUndisclosed2 - 9
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Quality Krafters is a small website development company launched in 2023. Their team provides Web Development and Mobile App Development.
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UndisclosedUndisclosed2 - 9Columbus, OH
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Iron Pulley is an Advertising company. Their small team is based in Columbus, Ohio. Their services include Advertising and Pay Per Click.
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$1,000+$50 - $99 / hr2 - 9Houston, TX
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Nlaak Studios, LLC is an API Development company. They were launched in 2017 and specialize in API Development and Custom Software Development.
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UndisclosedUndisclosed10 - 49San Jose, CA
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HiTech ERP Solutions Inc is a cloud consulting & SI company. Based in San Jose, California, the team provides cloud consulting & SI and ERP consulting and SI.
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UndisclosedUndisclosed10 - 49
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FT Optimize is a social media marketing company established in 2016. The company focuses on Social Media Marketing and Search Engine Optimization.
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UndisclosedUndisclosed10 - 49
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Established in 2018, SunnyByte is a custom software development firm. Their services include Custom Software Development and Web Development.
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UndisclosedUndisclosed10 - 49Pembroke Pines, FL
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Mertech Data Systems, Inc. Is a small custom software development firm based in Pembroke Pines, Florida and Fresno, California. The team offers Custom Software Development and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49San Tan Valley, AZ
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In San Tan Valley, Arizona, Web Services Pros is an e-commerce development firm. They provide E-Commerce Development and API Development and were established in 2014.
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UndisclosedUndisclosed10 - 49
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Based in Palo Alto, California, Tangent Logic is a small web development firm. The team specializes in Web Development and Mobile App Development.
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UndisclosedUndisclosed10 - 49Oxford, MD
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Redkik, Inc is a custom software development company founded in 2020. The team focuses on Custom Software Development and Insurance Services & Brokers and is located in Oxford, Maryland.
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UndisclosedUndisclosed10 - 49Tempe, AZ
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CRM consulting and SI company Bara Agency is in Tempe, Arizona. Established in 2019, the team focuses on CRM consulting and SI and Web Design.
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UndisclosedUndisclosed10 - 49Alpharetta, GA
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Elegant Software Solutions is a custom software development firm based in Alpharetta, Georgia. Launched in 2007, the team provides Custom Software Development and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Atlanta, GA
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TwinEngines, Inc. Is an Atlanta, Georgia-based cloud consulting & SI company. They specialize in cloud consulting & SI and Generative AI and were established in 1995.
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UndisclosedUndisclosed10 - 49
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OpsMantra.com, an IT strategy consulting company, is based in Los Angeles, California. The team offers IT strategy consulting and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49Thousand Oaks, CA
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Defined Ventures, Inc. Is a web design agency. Established in 2009, their team provides Web Design and CRM consulting and SI.
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UndisclosedUndisclosed10 - 49North Haven, CT
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Launched in 2017, Gismasoft Pvt. Ltd. Is a data analytics company. The team specializes in BI & big data consulting & SI and Custom Software Development.
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UndisclosedUndisclosed10 - 49Henderson, NV
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Web3Box Software LLC is an UX design company founded in 2015. The team provides UX/UI Design and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49Louisville, KY
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Brick Bridge Consulting is a small IT strategy consulting company headquartered in Louisville, Kentucky. The team specializes in IT strategy consulting and Custom Software Development.
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UndisclosedUndisclosed10 - 49Portland, OR
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Dymaptic is a big data company. They are based in Portland, Oregon and have small team. They offer BI & big data consulting & SI and Custom Software Development.
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UndisclosedUndisclosed10 - 49Salem, OR
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Launched in 2017, Devmatics is a business intelligence company. Based in Salem, Oregon, the team offers BI & big data consulting & SI and Custom Software Development.
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UndisclosedUndisclosed10 - 49Brooklyn, NY
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Infura, a Blockchain company, was established in 2016. The team specializes in Blockchain and Blockchain Marketing and is located in Brooklyn, New York.
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UndisclosedUndisclosed10 - 49New York, NY
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FYXO is a small New York, New York-based user experience design agency. Their services include UX/UI Design and cloud consulting & SI.
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UndisclosedUndisclosed10 - 49New York, NY
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Shift Lab is an UX agency. They specialize in UX/UI Design and cloud consulting & SI and are located in New York, New York.
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UndisclosedUndisclosed10 - 49Weldon Spring, MO
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Small custom software development company IT Looking Glass LLC, is based in Weldon Spring, Missouri. Their services include Custom Software Development and Web Development.
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UndisclosedUndisclosed10 - 49Spring Valley, NY
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Evelt is a web design company in Spring Valley, New York. They offer Web Design and UX/UI Design and were founded in 2008.
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UndisclosedUndisclosed10 - 49Bethel, OH
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Blue Cloud Development, a branding agency, was founded in 2018. The agency specializes in Branding and Graphic Design.
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UndisclosedUndisclosed10 - 49Boston, MA
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Established in 2009, Janeiro Digital is a small Boston, Massachusetts-based API Development company. Their team specializes in API Development and Digital Strategy.
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UndisclosedUndisclosed10 - 49Summerville, SC
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Apothesource, Inc. Is an API Development company based in Summerville, South Carolina. They provide API Development and DevOps Managed Services.
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UndisclosedUndisclosed10 - 49East Rutherford, NJ
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Neurasol Inc is an UX design company. Their small team is headquartered in East Rutherford, New Jersey. Their team specializes in UX/UI Design and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49Sheridan, WY
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Datolab is a Cybersecurity company. They are located in Sheridan, Wyoming and have small team of experts. Their services include Cybersecurity and Web Development.
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UndisclosedUndisclosed10 - 49Sheridan, WY
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Sastek is a Digital Strategy company. Launched in 2021, the agency focuses on Digital Strategy and Web Development.
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UndisclosedUndisclosed10 - 49
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Grandiose is a branding company in New York City, New York. Their services include Branding and UX/UI Design.
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UndisclosedUndisclosed10 - 49Wauwatosa, WI
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Splash Clinical is a Recruiting company. They provide Recruiting and Executive Search and are headquartered in Wauwatosa, Wisconsin.
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UndisclosedUndisclosed10 - 49Austin, TX
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Vulk Coop is an Austin, Texas-based user experience company. They focus on UX/UI Design and cloud consulting & SI and were established in 2013.
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UndisclosedUndisclosed10 - 49Kyiv, Ukraine
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StartIT is an Application Testing company. They are located in Kyiv, Ukraine and have small team of experts. Their services include Application Testing and API Development.
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UndisclosedUndisclosed10 - 49Jersey City, NJ
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Application Testing company Abeyis Solution was established in 2022. The firm offers Application Testing and BI & big data consulting & SI.
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UndisclosedUndisclosed10 - 49Vienna, VA
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K2S | Koncepts2Solutions is an Application Testing company headquartered in Vienna, Virginia. The team specializes in Application Testing and Robotics Process Automation.
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UndisclosedUndisclosed10 - 49Pittsburgh, PA
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ForAllSecure is an IT managed services company. Their small team is located in Pittsburgh, Pennsylvania. Their services include IT managed services and Application Testing.
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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
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39.5/40.020/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr10 - 49Kyiv, Ukraine
Ability to deliver
34.8/40.016.8/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
70% API Development30% Other -
$5,000+$25 - $49 / hr50 - 249L'viv, Ukraine
Ability to deliver
38.5/40.019.8/20 Reviews10/10 Clients & Experience8.8/10 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+$25 - $49 / hr1,000 - 9,999São Paulo, Brazil
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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
37.5/40.018.6/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
10% API Development90% 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 -
$5,000+< $25 / hr50 - 249Stamford, England
Ability to deliver
37/40.019/20 Reviews10/10 Clients & Experience8/10 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 -
$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
36.3/40.017.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
10% API Development90% Other -
$10,000+$25 - $49 / hr50 - 249Zymna Voda, Ukraine
Ability to deliver
36.1/40.018.4/20 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 -
$50,000+$150 - $199 / hr10 - 49Toronto, Canada
Ability to deliver
34.1/40.016.2/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
25% API Development75% 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
35.4/40.017/20 Reviews10/10 Clients & Experience8.4/10 Market PresenceService focus
10% API Development90% Other -
$25,000+$25 - $49 / hr10 - 49Barranquilla, Colombia
Ability to deliver
35.5/40.017.6/20 Reviews10/10 Clients & Experience7.9/10 Market PresenceService focus
10% API Development90% Other -
$5,000+$25 - $49 / hr50 - 249Luzern, Switzerland
Ability to deliver
35.2/40.018.4/20 Reviews10/10 Clients & Experience6.8/10 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 -
$50,000+$50 - $99 / hr10 - 49
Ability to deliver
35.2/40.015.8/20 Reviews10/10 Clients & Experience9.4/10 Market PresenceService focus
10% API Development90% 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+< $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 -
$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 -
$10,000+$25 - $49 / hr50 - 249Kyiv, Ukraine
Ability to deliver
33.9/40.018/20 Reviews10/10 Clients & Experience5.9/10 Market PresenceService focus
15% API Development85% Other -
$1,000+< $25 / hr50 - 249Jaipur, India
Ability to deliver
33.2/40.018/20 Reviews8/10 Clients & Experience7.2/10 Market PresenceService focus
20% API Development80% Other -
$25,000+$50 - $99 / hr10 - 49Sydney, Australia
Ability to deliver
34.1/40.018/20 Reviews10/10 Clients & Experience6.1/10 Market PresenceService focus
15% API Development85% 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 -
$1,000+$25 - $49 / hr10 - 49Surat, India
Ability to deliver
34/40.016.4/20 Reviews9.1/10 Clients & Experience8.4/10 Market PresenceService focus
15% API Development85% 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.