Hire the Best API Developers Near St. Louis.

Toptal is a marketplace for top remote API developers. Top companies and start-ups in St. Louis choose Toptal API freelancers for their mission-critical initiatives.

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Chet Hardin

Freelance API Developer

As a developer, Chet brings more than his 10+ years of experience with CSS, HTML, PHP, JavaScript, and WordPress. He is a team­ player. Chet believes that clear communication is key to success, and to that end, he is receptive, collaborative, and deadline-driven. Chet has extensive experience working within the WordPress CMS and adheres to strict best practices. He delivers well­-documented code on-­time and pixel­ perfect.

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APISassCSSjQueryGitWordPressWooCommerce APIWooCommerce
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Matthew Keas

Freelance API Developer

Matthew is an enthusiastic student of computer science, distributed computing, compiler theory, computer security, self-configured Linux systems, and functional theory. Recent projects involve cross-cloud and private-cloud architecture, configuring multiple Kubernetes clusters, Rancher cluster manager, Longhorn distributed block-storage management, Apache Kafka, and IoT edge-computing.

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APIC#ReactJavaScriptPHPExpress.jsCodeIgniterjQueryVelocity.js2D GamesFacebook APITwitter APIHTML5 Canvas
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Ryan Felton

Freelance API Developer

Ryan Felton is Facebook Innovation Award winner, an entrepreneur with three successful business exits, a veteran, MBA graduate, and a passionate technologist recognized as one of the top 3% of freelance developers worldwide.

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APIRubyHTML5Ruby on Rails (RoR)BootstrapFacebook APIFacebook Ads APIjQueryGitGitHubScrumAgile Software DevelopmentContinuous Deployment
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Avery Pierce

Freelance API Developer

Avery is an iOS app developer who has been coding for over ten years. He was the primary iOS app developer for a B2B eCommerce application that has been downloaded over 100,000 times and earned a 4.8-star rating on the App Store. His core skill set is Swift, Node.js, and TypeScript, but he's also familiar with a variety of other tools and languages.

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APISwiftCSSJavaScriptiOS
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Eva Bojorges Rodriguez

Freelance API Developer

Eva is a skilled back-end developer and machine learning engineer with experience in scalability issues, system administration, and more. She has a flair for well-structured, readable, and maintainable applications and excellent knowledge of Python, Ruby, and Go. She is a quick learner and has worked in teams of all sizes.

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APIPythonFlaskGoogle App EngineMachine LearningGoogle CloudGoogle BigQueryData ScienceScrumBack-endFull-stackC#React
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Paul Dermody

Freelance API Developer

Paul has over a dozen years of experience building .NET web and desktop apps. He's recently led the development of the public websites for R.M. Sotheby's and Dave & Buster's using SQL Server and hosting on Azure and AWS. On the front end, he regularly uses React and Angular. Paul is an exceptionally communicative leader who loves guiding technical teams through complex development projects to build high-quality solutions.

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APIC#JavaScriptHTML5.NETASP.NETUmbraco
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Aitizaz Khan

Freelance API Developer

Aitizaz is a full-stack engineer with expertise in Ruby on Rails and Java. He is keenly interested in algorithm-level efficiency and has experience working both with front-end and back-end technologies as well as frameworks. Aitizaz is also a competitive programmer who actively participates in different online challenges. He loves learning about anything, especially if it make him better at his craft.

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APIRubyRuby on Rails (RoR)RubyMineAgile Software DevelopmentWebBack-endjQueryGoogle Drive APISlackGoogle App EngineJiraGitHub
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Scott Fennell

Freelance API Developer

Scott has written hundreds of WordPress themes and plugins. He specializes in third-party API integrations including Twitter, MailChimp, CloudFlare, Bitbucket, and Shopify. He's an experienced public speaker, having presented at WordCamp Portland and also the Google campus in Seattle. He is active as a technology writer, having been published on A List Apart and CSS-Tricks many times. Scott is also a former infantry officer in the US Army.

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APIPHPCSSjQuery UIMailChimpWordPressWordPress ThemesWordPress PluginsPSD to WordPressjQuery CDNjQuery PluginsHTML to WordPressjQuery Validation
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Phil Greenberg

Freelance API Developer

Phil started his career as a software engineer but quickly discovered that his true passion centered around product management. Over the course of his career, he's successfully occupied a variety of roles across product and engineering—managing teams of up to 12 people and three different SaaS products from idea through launch.

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APIJavaScriptSQLExpress.jsReact NativeWebStormMicrosoft OfficePostgreSQLSOA ArchitectureSQL Stored ProceduresSocket.IOTest-driven Development (TDD)SaaS
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Nicholas Wakeman

Freelance API Developer

Nick's been architecting and developing applications for over a decade, working in both PHP and Python. In addition to a rich full-stack skill set, his business acumen and ability to communicate effectively with clients and stakeholders regardless of their technical knowledge sets him apart from the rest. Over the last few years, he's especially enjoyed being able to do some exceptional work in both enterprise applications and interface design.

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APIPHP 7PHP 5CSSSymfonyBootstrap 3EloquentSymfony 2Symfony 3jQueryTwilio APIGitMySQL

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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
Building a cross-platform app to be used worldwide
Building a cross-platform app to be used worldwide
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Creating an app for the game
Creating an app for the game
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Leading a digital transformation
Leading a digital transformation
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Testimonials

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

In addition to sharp technical skills, Faruk had a great attitude and is a really exceptional communicator. He always let us know where he was with his work, thoroughly and reliably. That's not always the case, and it made working remotely considerably easier. He was an easy integration into the team.

Leif Abraham, Co-Founder

AND CO Ventures Inc

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, Director

K Dunn & Associates

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, CEO

Radeeus

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, Co-Founder

ProHatch

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 , Principal

Site Specific Software Solutions

We used Toptal to hire a developer with extensive Amazon Web Services experience. We interviewed four candidates, one of which turned out to be a great fit for our requirements. The process was quick and effective.

Abner Guzmán Rivera, CTO and Chief Scientist

Photo Kharma

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

Working with Marcin is a joy. He is competent, professional, flexible, and extremely quick to understand what is required and how to implement it.

André Fischer, CTO

POSTIFY

We needed a expert engineer who could start on our project immediately. Simanas exceeded our expectations with his work. Not having to interview and chase down an expert developer was an excellent time-saver and made everyone feel more comfortable with our choice to switch platforms to utilize a more robust language. Toptal made the process easy and convenient. Toptal is now the first place we look for expert-level help.

Derek Minor, Senior VP of Web Development

Networld Media Group

Toptal's developers and architects have been both very professional and easy to work with. The solution they produced was fairly priced and top quality, reducing our time to launch. Thanks again, Toptal.

Jeremy Wessels, CEO

Kognosi

We had a great experience with Toptal. They paired us with the perfect developer for our application and made the process very easy. It was also easy to extend beyond the initial time frame, and we were able to keep the same contractor throughout our project. We definitely recommend Toptal for finding high quality talent quickly and seamlessly.

Ryan Morrissey, CTO

Applied Business Technologies, LLC

I'm incredibly impressed with Toptal. Our developer communicates with me every day, and is a very powerful coder. He's a true professional and his work is just excellent. 5 stars for Toptal.

Pietro Casoar, CEO

Ronin Play Pty Ltd

Working with Toptal has been a great experience. Prior to using them, I had spent quite some time interviewing other freelancers and wasn't finding what I needed. After engaging with Toptal, they matched me up with the perfect developer in a matter of days. The developer I'm working with not only delivers quality code, but he also makes suggestions on things that I hadn't thought of. It's clear to me that Amaury knows what he is doing. Highly recommended!

George Cheng, CEO

Bulavard, Inc.

As a Toptal qualified front-end developer, I also run my own consulting practice. When clients come to me for help filling key roles on their team, Toptal is the only place I feel comfortable recommending. Toptal's entire candidate pool is the best of the best. Toptal is the best value for money I've found in nearly half a decade of professional online work.

Ethan Brooks, CTO

Langlotz Patent & Trademark Works, Inc.

In Higgle's early days, we needed the best-in-class developers, at affordable rates, in a timely fashion. Toptal delivered!

Lara Aldag, CEO

Higgle

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’s ability to rapidly match our project with the best developers was just superb. The developers have become part of our team, and I’m amazed at the level of professional commitment each of them has demonstrated. For those looking to work remotely with the best engineers, look no further than Toptal.

Laurent Alis, Founder

Livepress

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

We needed some short-term work in Scala, and Toptal found us a great developer within 24 hours. This simply would not have been possible via any other platform.

Franco Arda, Co-Founder

WhatAdsWork.com

Hire API Developers Seamlessly with Toptal

1

Talk to One of Our Industry Experts

A Toptal director of engineering will work you to understand your goals, technical needs, and team dynamics.
2

Work With Hand-Selected Talent

Within days, we'll introduce you to the right API developer for your project. Average time to match is under 24 hours.
3

The Right Fit, Guaranteed

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

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 in under 2 weeks 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.

Featured Toptal API Publications

Joaquin Cid
EngineeringBack-end

How to Build a Role-based API with Firebase Authentication

by Joaquin Cid
Ioram Gordadze
EngineeringBack-end

Creating Your First GraphQL API

by Ioram Gordadze
Andrey Shalashov
EngineeringBack-end

How to Approach Modern WordPress Development (Part 2)

by Andrey Shalashov
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Top API Developers are in High Demand.

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