Hire the Top 3% of Freelance API Integration Developers

Toptal is a marketplace for dedicated API Integration developers, engineers, programmers, coders, architects, and consultants. Top companies and startups choose Toptal API Integration freelancers for their mission-critical development projects.

No-Risk Trial, Pay Only If Satisfied.

Trusted by leading brands and startups

Hire Freelance API Integration Developers and Engineers

Amit Kumar Madhoriya

Freelance API Integration Developer
United Kingdom
Toptal Member Since January 5, 2021

Amit is a 7x Salesforce certified professional with 7+ years of experience in the Salesforce ecosystem and 13+ as a programmer and architect. He excels in AppExchange product development, API integration, REST API development, and implementation of various clouds in Salesforce. Amit has a deep understanding of applying OOP concepts and design patterns in application development, CI/CD, and DevOps tasks using SFDX.

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George Elias

Freelance API Integration Developer
United States
Toptal Member Since February 21, 2022

George is a seven-time certified Salesforce developer with experience in both programming and declarative Salesforce features. His expertise ranges from data model design to API integration, with significant investment in custom component development. George has successfully completed administrator and developer tasks in previous projects and is eager to contribute to new ones.

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Radoslav Kolarov

Freelance API Integration Developer
Toptal Member Since December 22, 2016

Radoslav is experienced in WordPress and WooCommerce development—including custom plugin creation, API integration, writing PHP and JavaScript/jQuery scripts, troubleshooting, responsive design, and more. Communication with the client and finishing the job on time or before the deadline are very important to him. Radoslav firmly believes that one should consistently deliver quality work.

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Lyndsey Scott

Freelance API Integration Developer
United States
Toptal Member Since August 4, 2021

Lyndsey graduated from Amherst College as a computer science major and has been a freelance iOS developer for the past 6+ years. She’s ranked in the top 1% of question answerers on Stack Overflow; she wrote tutorials as part of the raywenderlich.com iOS team and made video tutorials for kids co-starring with the likes of Bill Gates and Mark Zuckerberg. Lyndsey has been featured by CNN, BBC, and Forbes for her computer programming skills and efforts to promote diversity in tech.

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Usama Tufail

Freelance API Integration Developer
Toptal Member Since August 8, 2022

Usama is an extraordinarily disciplined full-stack developer. Having experience in HTML, CSS, JavaScript, React, TypeScript, MongoDB, Express, SQL, Husky, Git, NestJS, GraphQL, and API integration, he thrives in both front-end and back-end development. He quickly masters new technologies and stays ahead of industry trends. Usama's adaptability, continual learning, and high standards make him a solid asset to any project or team.

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Yuriy Markiv

Freelance API Integration Developer
Toptal Member Since June 18, 2020

Yuriy is a database developer and data engineer with 11 years of experience. He specializes in relational database concepts, estimation, implementation planning, development, integration, and deployment. He is proficient in Python, Flask, REST API, SQL, PL/SQL, Transact-SQL, Oracle, SQL Server, PostgreSQL, MySQL, Snowflake, Redshift, Hive, SAP, ETL, reverse ELT, and Unix. Yuriy is experienced in cloud computing, data modeling and quality, automated testing, data migration, and BI.

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Priyanka V

Freelance API Integration Developer
United Arab Emirates
Toptal Member Since February 10, 2021

Priyanka has implemented and enhanced 100+ Salesforce applications with users ranging from five to 1000+. As a Salesforce developer and consultant, she has eight certifications and 13 years of experience converting business processes to real-time applications while applying best practices in solution design and implementation. Priyanka finds immense happiness in using her Salesforce expertise to bring business value by saving cost/time, making clients' lives easier, and increasing productivity.

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David Entremont

Freelance API Integration Developer
United States
Toptal Member Since September 30, 2022

David is a Salesforce technical architect experienced in leading discovery processes and development teams at small and Fortune 500 companies. His experience working in startups and Big 4 consulting firms lends to his expert proficiency with Salesforce and perspectives on ROI, sales, and marketing strategies. David excels in solutions architecture, platform best practices, and Lighting development and is eager to bring those skills to new businesses and challenging projects.

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Matthew Keasling

Freelance API Integration Developer
Toptal Member Since August 12, 2021

Matthew is a professional developer with 15 years of hands-on experience; he's been working primarily on the Salesforce platform since 2014. He's consulted with clients of all sizes and in a wide variety of industries, including retail, energy, finance, nonprofit, government, and healthcare. Matthew is passionate about building high-quality solutions that meet today's requirements and are ready to grow and scale for tomorrow's.

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John Chambers

Freelance API Integration Developer
United States
Toptal Member Since December 18, 2023

John is a certified Salesforce platform developer with 14 years of experience in architecture, implementation, and integration. He approaches Salesforce from the unique perspective of both a developer and an end user, providing high-level design and the custom code required to implement it, saving countless hours compared to hiring multiple personnel. John specializes in custom API integrations with third-party applications such as Snowflake, Square, HubSpot, Shopify, QuickBooks, and Outreach.

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Andrew Miller

Freelance API Integration Developer
United States
Toptal Member Since September 24, 2018

Andrew has over 25 years of web development experience with a focus on WordPress development since 2012, which includes custom plugins and theme development, API and data integrations, troubleshooting, malware removal, and migrations. With a deep understanding of the WordPress codebase, Andrew provides services to clients who require more than an off-the-shelf solution.

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Discover More API Integration Developers in the Toptal Network

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Toptal in the press

... allows corporations to quickly assemble teams that have the right skills for specific projects.

Despite accelerating demand for coders, Toptal prides itself on almost Ivy League-level vetting.

Our clients
Creating an app for the game
Conor Kenney
Creating an app for the game
Leading a digital transformation
Elmar Platzer
Leading a digital transformation
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
Drilling into real-time data creates an industry game changer
Drilling into real-time data creates an industry game changer
Tripcents wouldn't exist without Toptal. Toptal Projects enabled us to rapidly develop our foundation with a product manager, lead developer, and senior designer. In just over 60 days we went from concept to Alpha. The speed, knowledge, expertise, and flexibility is second to none. The Toptal team were as part of tripcents as any in-house team member of tripcents. They contributed and took ownership of the development just like everyone else. We will continue to use Toptal. As a startup, they are our secret weapon.

Brantley Pace

CEO & Co-Founder

I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted. I hired him immediately and he wasted no time in getting to my project, even going the extra mile by adding some great design elements that enhanced our overall look.

Paul Fenley


The developers I was paired with were incredible -- smart, driven, and responsive. It used to be hard to find quality engineers and consultants. Now it isn't.

Ryan Rockefeller


Toptal understood our project needs immediately. We were matched with an exceptional freelancer from Argentina who, from Day 1, immersed himself in our industry, blended seamlessly with our team, understood our vision, and produced top-notch results. Toptal makes connecting with superior developers and programmers very easy.

Jason Kulik


As a small company with limited resources we can't afford to make expensive mistakes. Toptal provided us with an experienced programmer who was able to hit the ground running and begin contributing immediately. It has been a great experience and one we'd repeat again in a heartbeat.

Stuart Pocknee


How to Hire API Integration Developers Through Toptal


Talk to One of Our Industry Experts

A Toptal director of engineering will work with you to understand your goals, technical needs, and team dynamics.

Work With Hand-Selected Talent

Within days, we'll introduce you to the right API Integration developer for your project. Average time to match is under 24 hours.

The Right Fit, Guaranteed

Work with your new API Integration developer for a trial period (pay only if satisfied), ensuring they're the right fit before starting the engagement.


  • How quickly can you hire with Toptal?

    Typically, you can hire an API Integration developer with Toptal in about 48 hours. For larger teams of talent or Managed Delivery, timelines may vary. Our talent matchers are highly skilled in the same fields they’re matching in—they’re not recruiters or HR reps. They’ll work with you to understand your goals, technical needs, and team dynamics, and match you with ideal candidates from our vetted global talent network.

    Once you select your API Integration developer, you’ll have a no-risk trial period to ensure they’re the perfect fit. Our matching process has a 98% trial-to-hire rate, so you can rest assured that you’re getting the best fit every time.

  • How do I hire an API Integration developer?

    To hire the right API Integration developer, it’s important to evaluate a candidate’s experience, technical skills, and communication skills. You’ll also want to consider the fit with your particular industry, company, and project. Toptal’s rigorous screening process ensures that every member of our network has excellent experience and skills, and our team will match you with the perfect API Integration developers for your project.

  • How are Toptal API Integration developers different?

    At Toptal, we thoroughly screen our API Integration developers to ensure we only match you with the highest caliber of talent. Of the more than 200,000 people who apply to join the Toptal network each year, fewer than 3% make the cut.

    In addition to screening for industry-leading expertise, we also assess candidates’ language and interpersonal skills to ensure that you have a smooth working relationship.

    When you hire an API Integration developer with Toptal, you’ll always work with world-class, custom-matched API Integration developers ready to help you achieve your goals.

  • Can you hire API Integration developers on an hourly basis or for project-based tasks?

    You can hire an API Integration developer on an hourly, part-time, or full-time basis. Toptal can also manage the entire project from end-to-end with our Managed Delivery offering. Whether you hire an expert for a full- or part-time position, you’ll have the control and flexibility to scale your team up or down as your needs evolve. Our API Integration developers can fully integrate into your existing team for a seamless working experience.

  • What is the no-risk trial period for Toptal API Integration developers?

    We make sure that each engagement between you and your API Integration developer begins with a trial period of up to two weeks. This means that you have time to confirm the engagement will be successful. If you’re completely satisfied with the results, we’ll bill you for the time and continue the engagement for as long as you’d like. If you’re not completely satisfied, you won’t be billed. From there, we can either part ways, or we can provide you with another expert who may be a better fit and with whom we will begin a second, no-risk trial.

Tap Into World-Class Talent

  • Trusted Experts Only

    Trusted Experts Only

    All of our talent are seasoned experts who ramp up quickly, readily contribute as core team members, and work with you to minimize onboarding time.

  • The Right Fit

    The Right Fit

    We have a knack for matching you with the right fit. Start working with your new hire on a no-risk trial period, paying only if satisfied.

  • Scale as Needed

    Scale as Needed

    Hire talent within 48 hours and scale your team up or down as needed, no strings attached.

  • Seamless Hiring

    Seamless Hiring

    We handle all aspects of billing, payments, and NDA’s. Let us take care of the overhead while you focus on building great products.

  • Flexible Engagements

    Flexible Engagements

    Choose the engagement type that suits your needs — hourly, part-time, or full-time — with the ability to change anytime.

  • Expert Talent Matching

    Expert Talent Matching

    Focus on your project and enjoy support from your dedicated account executive and expert talent matcher.

Top API Integration Developers Are in High Demand.

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