Matt VerSteeg, Developer in San Francisco, CA, United States
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Matt VerSteeg

Verified Expert  in Engineering

Software Developer

San Francisco, CA, United States
Toptal Member Since
February 25, 2020

Matt is a full-stack mobile app developer with a passion for building beautiful, functional apps to serve complex business needs. Having built several systems from the ground up, he has experience in every step of the process—from concept and design to back-end architecture and CI/CD pipelines. An abundance of in-depth expertise enables Matt to offer a wealth of practical understanding to ensure your app development process goes smoothly.


Circulo Health
Apollo, React Native, GraphQL, JavaScript, HTML, CSS, APIs
Inspire Brands
.NET, Episerver, MuleSoft, Firebase, React Native, Android, iOS, JavaScript...
Perl, SQL, .NET, Android, iOS, JavaScript, HTML, APIs




Preferred Environment

TypeScript, Kotlin, Swift, React, Android, React Native, Firebase, iOS, Apollo, GraphQL

The most amazing...

...thing I've made is my app Jamr: we are a social media app for musicians to discover and collaborate locally. Check us out in the App Store and Play Store!

Work Experience

Senior Full-stack Developer

2021 - 2023
Circulo Health
  • Developed a full-stack React Native app to serve Medicaid patients with a more empathetic and user-friendly way to manage their care.
  • Engineered an Apollo back end as an orchestration layer communicating with REST servers, a Kafka consumer, Prisma databases, and state-run compliance systems.
  • Implemented an infrastructure-as-code AWS back end using Serverless and Terraform with GitLab runners for CI/CD and testing needs.
Technologies: Apollo, React Native, GraphQL, JavaScript, HTML, CSS, APIs

Lead Mobile Developer

2019 - 2020
Inspire Brands
  • Developed and maintained the Arby's app for native iOS and Android—implementing offer delivery, location search, and profile management.
  • Replatformed Arby's App back end onto Firebase, which reduced the average monthly cost from $40,000 to $1,000 while simultaneously improving Android and iOS app ratings from 1.4 and 1.6 to 4.4 and 4.7, respectively.
  • Designed and implemented an in-house profile management system for Buffalo Wild Wings in Firebase.
Technologies: .NET, Episerver, MuleSoft, Firebase, React Native, Android, iOS, JavaScript, HTML, CSS, APIs

Senior Mobile Engineer

2014 - 2017
  • Developed, designed, and maintained a suite of enterprise mobile apps in Swift, Objetive-C, Java, and Kotlin for a SaaS CRM for real estate agents.
  • Implemented RESTful .NET APIs and a managed database with C# and SQL.
  • Built the (now Etta) app, a collaborative home search tool for iOS and Android.
Technologies: Perl, SQL, .NET, Android, iOS, JavaScript, HTML, APIs

Research Engineer I

2013 - 2015
  • Developed electronic warfare systems on the F-16, A- 10, and C-130 aircraft.
  • Designed and created WPF testbed applications in C#.
  • Developed avionics software and support applications in C, C++, Perl, Python, and C#.
Technologies: Perl, Python, Windows Presentation Foundation (WPF), SQL, VB, .NET, C#

Jamr is a React Native social media app designed for musicians to connect with others in their area. The project was built with myself as the sole developer for the front end and back end, which provided a wealth of experience in every step of the process of ideating, implementing, and iterating on an idea from its conception to its release.

App Store:

Play Store:

Buffalo Wild Wings
The Buffalo Wild Wings app enables online ordering, tracking, delivering coupons, and managing loyalty programs. The system was built to cross-compile to web and native from a single codebase.
2008 - 2013

Bachelor of Science (BSc) Degree in Computer Engineering

Georgia Institute of Technology - Atlanta, GA, USA


MobX, React, Node.js


Jira, Git, Prisma


React Native, Redux, .NET, Windows Presentation Foundation (WPF)


Swift, JavaScript, TypeScript, HTML, Kotlin, SQL, Perl, C#, VB, Python, Java, GraphQL, CSS


iOS, Firebase, Android, MuleSoft, Amazon Web Services (AWS)




APIs, Episerver, Apollo

Collaboration That Works

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