Hire the best API developers near St. Louis.

Toptal is a marketplace for top remote API developers, engineers, programmers, coders, architects, and consultants. Top companies and start-ups in St. Louis choose Toptal Api freelancers for their mission critical software projects.
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Hire remote API Developers near St. Louis or in a similar time zone

Alex Wong

Freelance API Developer at Toptal since January 5, 2016
Alex is an independent software consultant with more than 15 years of experience. He has helped companies of all sizes, from nascent startups to Fortune 500 corporations, successfully deliver software projects by providing expertise in development, architecture, and management. He has built solutions in everything from large-scale distributed systems to rich internet front-ends for clients such as Sun Microsystems, Zendesk, and GE Capital. Click to continue

Colin Young

Freelance API Developer at Toptal since August 19, 2015
Colin is a senior engineer with 5+ years' experience leading products and managing small entrepreneurial teams. He specializes in robust, performant API back-ends and the clients and applications they serve, and his core skills are Ruby, Swift/Obj-C, JS, and Linux Server. He's trained in UX and design, and has proven ability to learn new tech quickly. He is skilled at React, and gaining ground with Android products. Click to continue

Charles Naccio

Freelance API Developer at Toptal since November 10, 2016
Charles is a motivated senior Salesforce consultant and developer with over six years of experience, focused on finding new and creative ways of leveraging the Salesforce.com platform to address the ever-changing needs of business organizations. To top things off, he has a keen understanding of business and business concepts, which enables him to effectively communicate with executives and key business stakeholders. Click to continue

Harrison Strowd

Freelance API Developer at Toptal since November 4, 2016
Harrison has extensive experience building and maintaining web server applications of all shapes and sizes. The majority of his experience is in Ruby on Rails, but he also has experience with many other languages as well. Harrison has a strong understanding of the entire stack of server-side technologies. Click to continue

Ryan Felton

Freelance API Developer at Toptal since October 7, 2015
Ryan is an entrepreneur at heart and a stellar web app developer by trade. He prides himself on his efficiency in communication and his efficacy in development, and he is sure to be an excellent addition to--or leader for--any team. Click to continue

John-Paul May

Freelance API Developer at Toptal since October 24, 2016
John-Paul is an extremely experienced developer in OCC native and cloud engineering, as well as Unity, VR, and hardware-software devices. He has a long roster of multi-million dollar product successes for clients. He combines a savvy marketing outlook with the more difficult technical engineering. A specialist in the high-value "attractions" industry. He has led teams of all types and budgets, creating many huge successes for clients. Click to continue

Oleg Rikkers

Freelance API Developer at Toptal since July 19, 2015
Oleg has been working with the Salesforce platform since late 2007. During that time, he gained great expertise building enterprise-grade applications on it. His knowledge of Force.com tools, frameworks, and features includes Apex, Visualforce, Lightning/Aura, customer/partner communities, ProcessBuilder, Salesforce 1, and more. He is well versed in Scrum/Agile methodology and change management. Click to continue

Matthew Keas

Freelance API Developer at Toptal since July 13, 2013
Matthew is an enthusiastic world traveler and follower of scientific computing, compilers, web development, and computer security. He has learned from universities and government organizations and worked for individual clients, startups, and more. He lives to solve problems, and he contributes actively to open source and community projects. Click to continue

Andrew Onyshchuk

Freelance API Developer at Toptal since October 1, 2013
Andrew is an experienced web developer who is obsessed with learning newer and better technologies to bring the best solutions to all products and ideas. He possesses a vast range of skills and has experience with many different technologies, designs, and methods of execution. Click to continue

Mario J. Wunderlich

Freelance API Developer at Toptal since October 28, 2016
Mario is a software engineer with over 20 years of experience and an entrepreneurial spark. He is a generalist more than a specialist with expertise in a number of fields. He loves to learn, to create, to experiment, and especially loves to work and immerse himself in interesting projects. His current focus is in full-stack web development, but he's also interested in mobile development, RESTful APIs, bots, UX, machine learning, and big data. Click to continue
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“Toptal developers deliver. Hiring my first developer on Toptal was such a pleasant experience that I quickly turned around and hired another. Every developer I've hired on Toptal has been professional, skilled, and self-managing—a pleasant departure from the typical freelancer marketplace.”
Mike Riess
Owner @ RiessGroup
“We recently launched our app with the help of Toptal and Nikola, an iOS developer. I was immediately impressed with the constant communication, detail, and level of talent that Nikola brought to the table. More importantly, when the project was underway, Nikola proactively provided creative workarounds for unforeseen hurdles and challenges. I couldn't be happier with our engagement and would highly recommend Nikola and Toptal.”
Chip O'Toole
Founder @ Humans Helping Robots LLC
“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 start up, they are our secret weapon.”
Brantley Pace
CEO & Co-Founder @ Tripcents
“With Toptal, we are able to find talented developers in a matter of weeks instead of months. The quality of talent they supply is extremely high as the developers are able to immediately onboard and ramp incredibly fast.”
Zac Carman
CEO @ ConsumerAffairs
“The best talent is at Toptal for sure. It's way better and faster than any other means of getting top talent.”
Rajesh Nagarajan
Co-Founder & CTO @ maxmantra
“Sergio was an awesome developer to work with. Top notch, responsive, and got the work done efficiently.”
Dennis Baldwin
Chief Technologist and Co-Founder @ PriceBlink
“Toptal has been an incredible source of amazing software engineering talent. The contractors who have worked with us have been top notch, spoke perfect English, and worked superbly with our team. We recommend Toptal without any reservations!”
Vineet Singal
Co-Founder @ CareMessage
“Getting set up with Toptal and finding a new team member was so easy, I don't know why anyone wouldn't give it a try. Best of all, we no longer have to worry about finding great people to help with our projects!”
Mike Branch
President & CTO @ Harbor System Integrators, Inc
“Our experience with Toptal was very good. We had an open ended development project when we got started and the programmer from Toptal was very helpful, working with us on everything from the top level outline all the way down to development and delivery of functioning code." ”
Michael Milton
VP of Engineering @ SLANTRANGE
“We needed a talented developer and we needed him/her very quickly. So we turned to Toptal and couldn't be happier with the results! Our Toptal freelancer has contributed extraordinary knowledge, talent, and startup experience to our team. We will continue to work with Toptal to fulfill our future talent needs.”
Lindsay Fairman
Founder & Owner @ FairTech Labs, LLC
“Toptal makes finding qualified engineers a breeze. We needed an experienced ASP.NET MVC architect to guide the development of our start-up app, and Toptal had three great candidates for us in less than a week. After making our selection, the engineer was online immediately and hit the ground running. It was so much faster and easier than having to discover and vet candidates ourselves.”
Jeff Kelly
Co-Founder @ Concerted Solutions
“Andrea is doing an amazing job. I don't think we could have gotten a better person. He is fun to work with, he thinks out of the box, and he is extremely knowledgeable in what he is going. He not only does an excellent job, he also helps our company to differentiate our business model further (e.g. making our app offline-capable). I would recommend Andrea as well as Toptal any time to any friend.”
Pascal Girardat
Co-Founder / CEO @ Lifestage Solutions AG
“Toptal makes finding a candidate extremely easy and gives you peace-of-mind that they have the skills to deliver. I would definitely recommend their services to anyone looking for highly-skilled developers.”
Michael Gluckman
Data Manager @ Mxit
“Toptal was the best thing to happen to my web app. Initially, I hired a team of freelancers from India through another freelancing website—which was a nightmare. In fact, it was so bad that I had to start again from scratch, which is when I found Toptal. The experiences were like night and day. It was so refreshing to get partnered up with a quality developer that I could trust due to Toptal's extensive screening process. I will only use Toptal from now on and highly recommend you do the same.”
Chris Holtzhauer
CEO @ HootRecruit