Top API Development & Integration Firms

API development and integration firms build the interfaces that let software talk to other software, and wire up the ones that already exist. Work ranges from designing REST, GraphQL or gRPC APIs for a product or partner program to connecting payment gateways, CRMs, ERPs, shipping carriers, messaging platforms and banking or healthcare systems through their published APIs. Companies hire for it when staff retype data between two systems, when partners want programmatic access, or when a monolith is being split into services.

Compare firms here on the systems they have integrated before, the documentation they hand over, and how they handle authentication, versioning and outages when a third-party API fails.

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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

8,490 Companies

List of the Best API Development & Integration Agencies

Bay Area Coders
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Bay Area Coders, founded in 2016 and located in San Francisco, is a product and engineering studio that collaborates with venture-backed startups and growth-stage firms. We integrate strategy, design, engineering, and AI to assist teams in launching new products and enhancing existing ones. Our expe
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Roseville, California, Us
Services Provided+7 Services
12% Mobile App Development (iOS & Android)
14% Custom Web Application Development
5% QA & Software Testing
3% API Development & Integration
AI Summary
“Bay Area Coders is a San Francisco-based product and engineering studio integrating strategy, design, engineering, and AI to rapidly deliver scalable solutions for startups and growth-stage companies.”
Teklino
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Teklino is a comprehensive IT firm that provides innovative software, AI, and cloud solutions for startups, small and medium-sized enterprises, and large companies around the globe. We focus on creating scalable, secure, and high-performance digital products customized to meet specific business requ
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Ahmedabad, Gujarat, In
Services Provided+14 Services
4% Mobile App Development (iOS & Android)
4% Backend Development
2% E-Commerce Development
3% Progressive Web App (PWA) Development
AI Summary
“Teklino is a global IT firm specializing in software development, AI, cloud services, and digital transformation, delivering scalable, secure, and innovative solutions to diverse businesses.”
SynoLabs IT
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Synolabs IT Solutions is an energetic provider of IT services that integrates innovation and expertise to support businesses in the digital age. We offer a wide range of services, such as web application development, office and workflow automation, mobile application development, cloud solutions, an
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
17% Custom Web Application Development
14% Mobile App Development (iOS & Android)
3% API Development & Integration
33% Web App UI Design
AI Summary
“Synolabs IT Solutions delivers comprehensive IT services including web and mobile app development, office automation, cloud solutions, and talent trafficking, enhancing digital business operations efficiently.”
Confidence Technology
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Comprehensive website creation Services include website development and custom design Website marketing Place an order for a website Superior workmanship Reliability Confidence is a web development and design studio focused on creating websites and tailored designs, along with crafting corporate and
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Kyiv, Ua
Services Provided+12 Services
4% E-Commerce Development
3% API Development & Integration
1% Blockchain & Web3 Development
6% Custom Web Application Development
AI Summary
“Confidence Technology specializes in high-quality web development, custom design, and marketing services, providing tailored online solutions to enhance business growth and market presence.”
FresnoBizz
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FresnoBizz is a prominent software and mobile app development firm located in Fresno, California. We offer advanced technology solutions tailored for both enterprise and startup businesses. Our primary services include: - iOS development (iPhone/iPad) - Android development - Hybrid app development
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Los Angeles, California, Us
Services Provided+9 Services
15% Mobile App Development (iOS & Android)
8% Custom Web Application Development
3% E-Commerce Development
2% Legacy System Modernization
AI Summary
“FresnoBizz is a Fresno-based software and mobile app development firm delivering comprehensive technology solutions including app development, UX/UI design, AI, IoT, cloud services, and digital marketing.”
REEA
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We are Reea, a software development and web design agency that offers a comprehensive range of services, from software and digital solutions to branding. With a team of over 140 specialists, we operate at the crossroads of vision, strategy, design, and technology. Our network includes designers, vis
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Targu Mures, Mures, Ro
Services Provided+12 Services
7% Custom Web Application Development
5% Mobile App Development (iOS & Android)
3% API Development & Integration
2% SaaS Product Development
AI Summary
“REEA is a multidisciplinary software development and design agency offering branding, web and app development, UI/UX, AR/VR, gaming, and digital marketing with a team of over 140 specialists.”
CFATech
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CFATech is a technology firm located in Rio de Janeiro, Brazil, that specializes in custom software development and integrated IT solutions for various businesses. We create bespoke systems tailored to specific sectors, including healthcare clinics, fitness centers, pet shops, real estate agencies,
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Rio de Janeiro, Rio De Janeiro, Br
Services Provided+9 Services
12% Mobile App Development (iOS & Android)
17% Custom Web Application Development
5% API Development & Integration
8% Cloud Consulting & SI
AI Summary
“CFATech is a Rio-based technology firm delivering custom software, IT infrastructure, security systems, automation, cloud, solar, and consulting services across multiple industries with high client satisfaction.”
Appicoders
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Appicoders is a recognized mobile app development and custom software firm based in New York, USA, with additional offices in San Francisco and Houston. Established in 2011, we specialize in converting innovative concepts into high-performance, scalable digital solutions for startups, small to mediu
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+5 Services
30% Mobile App Development (iOS & Android)
20% Custom Web Application Development
15% Progressive Web App (PWA) Development
10% Backend Development
AI Summary
“Appicoders is a US-based software firm specializing in mobile and web app development, AI/ML, blockchain, and digital transformation across fintech, healthcare, e-commerce, and more, delivering scalable, user-centric solutions.”
Neuradesign
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Neuradesign is a technology studio that specializes in creating advanced digital systems that merge AI, software engineering, cybersecurity, and IT infrastructure. We assist businesses in automating essential processes, enhancing the security and resilience of their systems, and transforming data in
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
7% Mobile App Development (iOS & Android)
20% Custom Web Application Development
7% API Development & Integration
13% AI Strategy & Roadmap Consulting
AI Summary
“Neuradesign is a technology studio delivering AI-driven automation, cybersecurity, and integrated IT infrastructure solutions to optimize processes, enhance security, and support strategic decision-making for businesses.”
Cuetech Solutions
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Cuetech Solutions is a software development firm that assists businesses in modernization, innovation, and scaling. We believe that technology should evolve alongside your company rather than hinder it. Our areas of expertise include: - **Custom Web Development:** Scalable, API-driven applications
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
13% Custom Web Application Development
10% Mobile App Development (iOS & Android)
5% API Development & Integration
2% E-Commerce Development
AI Summary
“Cuetech Solutions delivers custom web and mobile app development, AI integration, and cloud services, enabling businesses to modernize, innovate, and scale with secure, scalable technology solutions.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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