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

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 Unity, VR, and native apps. He has a long roster of multi-million dollar product successes for clients. He is a leading expert in the most difficult game technology ("maker-" games, generative technology), in cloud/MMP/OOC, and in the "rides-attractions" industry. He has led asset teams off all types and has worked in environments from low to high budgets with a broad circle of creators. 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

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

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 in building enterprise-grade applications on it. His knowledge of Force.com tools, frameworks, and features includes Apex, Visualforce, Lightning/Aura, customer/partner communities, ProcessBuilder, Salesforce1, and more. He is well versed in Scrum/Agile methodology and change management. Click to continue

Sean Desmond

Freelance API Developer at Toptal since November 19, 2013
Sean is a top software engineer with a passion for exceptional design and a proven ability to build effective, scalable, multi-tiered solutions. He has over ten years of software development and architecture experience, and has worked a variety of roles, from individual developer to tech/team lead. Click to continue

Jake Varghese

Freelance API Developer at Toptal since September 20, 2013
As an architect, Jake understands the process of solving complex problems that plague enterprise and medium size businesses. He is a full-stack problem solver--he can build entire apps from scratch or he can optimize an existing app already in the field. Click to continue
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“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
“We have been with Toptal for over two years and have hired through them multiple times. They've never failed to deliver with world-class talent and customer service and have been our first choice when scaling our team.”
Stuart Reavley
Product Lead @ ClassDojo
“Toptal has been extremely helpful to us in finding top remote talent. The ratio from interview to hire with Toptal candidates is the highest I've ever experienced in my professional career.”
Philipp Berner
Co-founder and CTO @ KeepSafe
“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
“I'm incredibly impressed with the caliber of the Toptal developers I have worked with - they have proven themselves to be both dedicated and highly talented. We will most definitely continue to work with Toptal. ”
Savannah de Savary
Founder @ Industry Hub
“FundedByMe needed to quickly scale our development team to create the equity crowdfunding leg of our operation. Working with a small budget, we couldn't spend time on vetting candidates, so we turned to Toptal. They identified a stellar developer that truly set the bar when it came to delivering product.”
Arno Smit
CTO @ FundedByMe.com
“The Toptal process was very organized, personable, and professional. They get to know you and your project idea, and then quickly provide you with several of the world's best developers, who will work hard to achieve your vision. I found a great developer in only a few days and was able to turn my idea into a functional product.”
Ben Woratyla
CEO @ Book Swap
“Working with Enrique has been a pleasure and a relief. His knowledge in the IT space is broad and in-depth. Zoomedia has been in need of this level of support for some time and I feel confident we are an exponentially stronger team with Enrique on board.”
Justin Bane
Senior Technical Lead @ Zoomedia
“We have been incredibly happy with our Toptal experience. Initially a skeptic, the process to find and recruit a fabulous iOS developer was very easy. Rather than sifting through hundreds of CVs, we saw two and hired them. They have worked effectively, getting up to speed incredibly quickly and have almost become part of the team. We would definitely use Toptal again. ”
James O'Day
Co-Founder @ Pearlshare
“My experience with Toptal has exceeded expectations. I needed to quickly find a front-end developer, and the first person they recommended was a perfect fit. A month later, I needed an iOS developer and they delivered again. I'm incredibly impressed with the quality of the people in Toptal's network and how quickly I was able to find a match for my needs.”
Bruno De Martino
Head of Product @ Token
“My business relationship with Toptal has been nothing short of terrific. From reviewing my project with their team to choosing a highly-talented developer, and all the way through releasing our application, it has been an incredibly smooth and successful experience.”
Gary Craig
Senior Analyst @ NetApp
“We've been very pleased with our experience working with Toptal. Their team was incredibly helpful in helping us find the perfect developer for our project. The work was stellar, the communication was excellent and we couldn't have been happier with the overall experience. We're excited to work with Toptal for more projects in the future!”
Ryan Walker
Director, Product Management @ Rand McNally
“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're a small firm with big dreams. After trying 4 or 5 local or outsourced developers, we were out of options. I'd heard of Toptal, but was worried that my company wasn't big enough for them. After calling them up, I found out that I didn't need to meet any minimum budget and was immediately put in touch with a developer to talk through my problems and goals. A day later, he got back to me with a list of possible solutions. After 9 months and 5 developers, Toptal got me my solution in a single week at a price I could afford.”
Kevin Ramirez
Co-Founder @ SixtyVocab.com
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VP of Talent Operations