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

Pircle
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Pircle is a prominent provider of technology solutions, focusing on custom web and mobile app development, enterprise software, and API integrations. Known for its comprehensive, strategic approach, Pircle consistently offers scalable and high-performance solutions that meet specific business requir
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Los Angeles, California, Us
Services Provided
45% Custom Web Application Development
35% Mobile App Development (iOS & Android)
20% API Development & Integration
AI Summary
“Pircle specializes in custom web and mobile app development, enterprise software, and API integrations, delivering scalable, high-performance solutions with strong project management and client-focused innovation.”
BigJump Limited
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We manage the intricate technology from design to launch, allowing you to concentrate on your vision—enjoy a clean codebase, a seamless launch you can rest easy about, and a team that is readily available to assist you.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Great Malvern, England, Gb
Services Provided
30% Custom Web Application Development
20% API Development & Integration
28% AI Strategy & Roadmap Consulting
22% Custom AI Chatbot Development
AI Summary
“BigJump Limited specializes in end-to-end technology management, delivering clean codebases and seamless product launches while providing ongoing expert support to realize clients' visions effectively.”
BridgeView - IT Consulting & Staffing
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BridgeView is a consulting firm specializing in talent and technology that assists business leaders in creating outstanding technology teams and successfully executing intricate projects. Established in 2005, BridgeView's experienced delivery team has developed a wide-ranging network of specialized
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Denver, Colorado, Us
Services Provided+6 Services
15% API Development & Integration
25% Custom Web Application Development
10% Mobile App Development (iOS & Android)
5% Robotic Process Automation (RPA)
AI Summary
“BridgeView delivers specialized IT consulting and staffing solutions, combining strategic talent acquisition and technology expertise to help clients efficiently build high-performing teams and execute complex projects.”
Convertec LLC
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At Convertec, we help businesses reach new levels of success by providing cutting-edge technology and strategic digital solutions. Our knowledge encompasses AI integration, custom software development, e-commerce and web development, mobile app creation, and digital marketing, all aimed at streamlin
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
New York, New York, Us
Services Provided+1 Services
20% API Development & Integration
20% Software Development Services
20% E-Commerce Development
20% Mobile App Development (iOS & Android)
AI Summary
“Convertec LLC specializes in a broad range of software development services including API integration, custom web and mobile app development, and e-commerce platforms. Their expertise in backend and frontend technologies makes them a strong fit for the Software Development category.”
StratBit IT Solutions
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StratBit IT Solutions is your ally for all your digital requirements. We specialize in Web Design, Web Development, eCommerce, and the latest technologies to help foster growth in your business. Our commitment is to provide you with top-notch services, emphasizing quality, timely delivery, and effec
Highlights
2-9
Employees
Sibulan, Central Visayas, Ph
Services Provided+1 Services
20% API Development & Integration
20% E-Commerce Development
20% Mobile App Development (iOS & Android)
20% Web App UI Design
AI Summary
“StratBit IT Solutions excels in Software Development with core services including API Development, E-Commerce platforms, and Mobile App Development, delivering technology solutions that support client business growth in the Philippines.”
Omnicode
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Omnicode is a specialized software development studio established in 2022. We focus on creating top-notch web and mobile applications that blend effective coding with imaginative design. Our team provides customized solutions that support business growth, emphasizing innovation, usability, and smoot
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Bratislava, Bratislava, Sk
Services Provided+1 Services
20% API Development & Integration
20% E-Commerce Development
20% Search Engine Optimization (SEO)
20% Web App UI Design
AI Summary
“Omnicode specializes in software development services including API Development, Custom Web Application Development, and E-Commerce Development, delivering tailored, innovative solutions to support client business growth with a strong coding foundation.”
Smarter Technologies Group
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Smarter Technologies offers real-time tracking, monitoring, and recovery of assets worldwide, delivering asset tracking systems to the general market and addressing the most intricate asset tracking needs. Our services span a wide range of industries, products, and equipment, from tracking container
Highlights
50-249
Employees
Ringwood, England, Gb
Services Provided+1 Services
20% API Development & Integration
20% Other IT Consulting and SI
20% QA & Software Testing
20% Internet of Things Services
AI Summary
“Smarter Technologies Group excels in Software Development with a strong focus on API Development & Integration, supporting their delivery of real-time asset tracking and IoT solutions.”
HashQ Technologies Pvt Ltd
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We specialize in providing personalized software project services that turn your ideas into reality. Our offerings include custom software development, smooth integration, expert consulting, and extensive support to guarantee that your projects are carried out with accuracy and quality.
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Kuttoor, Kerala, In
Services Provided+1 Services
20% API Development & Integration
20% Other IT Consulting and SI
20% Software Development Services
20% Mobile App Development (iOS & Android)
AI Summary
“HashQ Technologies Pvt Ltd excels in Software Development, offering comprehensive services including API Development, Custom Web Application Development, and Mobile App Development for iOS and Android, ensuring personalized and quality software solutions.”
InnoWave
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InnoWave possesses unparalleled expertise in vision technology, along with extensive knowledge in firmware development for video processing and embedded systems, among other areas. We provide comprehensive imaging solutions for AI-driven vision applications, including embedded software design, hardw
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Cleveland, Ohio, Us
Services Provided+2 Services
10% Custom Web Application Development
18% Backend Development
22% API Development & Integration
15% AI Strategy & Roadmap Consulting
AI Summary
“InnoWave specializes in advanced vision technology and embedded systems, delivering tailored imaging solutions and software innovations trusted by leading semiconductor and AI industry partners globally.”
EscapeAILab
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EscapeAILab creates and develops AI operating systems tailored for contemporary teams and businesses. Our emphasis is on constructing organized, manageable AI systems that enhance decision-making, execution, and operational transparency—rather than offering isolated tools or generic automation solut
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Beograd, Belgrade, Rs
Services Provided+3 Services
10% AI Strategy & Roadmap Consulting
5% Custom AI Chatbot Development
14% Machine Learning Model Development
5% Robotic Process Automation (RPA)
AI Summary
“EscapeAILab develops integrated AI operating systems for teams and businesses, enhancing decision-making, execution, and transparency with reliable, scalable, and accountable AI solutions.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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