AIDAN FOLLESTAD

years old, full stack software developer, Staff (L6) Android Engineer @ Square

GitHub portfolio link Instagram portfolio link LinkedIn portfolio link
Mobile
My specialty is Kotlin & Android apps; I also dabble with iOS.
Web
Mostly classic HTML, CSS, & JS. No React Native!
Backend
Using Node.js & Express, or Kotlin & Ktor.

Introduction

I was born in St. Paul, Minnesota. I spent almost 6 years in San Francisco but ended up back in Minnesota. I'm currently a Staff (L6) Android Engineer at Square (Block), working on the e-commerce team that owns Square Online (formerly Weebly).

I'm 100% self-taught, I started studying C++ when I was a kid due to an obsession with video games. That shifted into desktop apps, and then mobile applications when the first Android phones came out. I've done a lot of work with open source libraries, though not as much these days with the amount of focus I put into work.

I'm into bicycling, motorcycling, cars, snowboarding, and playing the drums. I currently ride a 2020 Street Triple RS 765, and I drive a 2025 Hyundai Ioniq 5 N 🏍 I'm a major music lover, from rock, punk, & metal to electronic & K-Pop! 🤘

Experience

Square logo
Square
Staff Android Engineer, Ecommerce
May 2025 — Present

I'm working primarily on Square Online and Payment Links.

Staff Android Engineer, Conversations
Jun 2021 — May 2025

I worked primarily on the Square Messages product. Promoted to staff L6 on this team.

Senior Android Engineer, Personalization
Sep 2020 — Jun 2021

I built the new Point of Sale checkout experience on Android. Promoted to senior L5 on this team.

Android Engineer, Device Experience
Mar 2018 — Sep 2020

I worked on the user-facing software that runs on Square Register and Square Terminal, helping to bring them to market.

Target logo
Target
Android Engineer
Nov 2016 — Mar 2018

I worked on flagship app before & after it was merged with Cartwheel (now "Circle"). I also led implementation of in-store payments using the app on Android.

SkillFitness logo
SkillFitness
Mobile Solutions Developer
Jul 2015 — Nov 2016

I did both a mobile (Android + iOS) and backend (ASP.NET). SkillFitness started out for sales professionals, but expanded to other places (like teaching spoken languages in the classroom).

Android Development Consultant
Jun 2015 — Jul 2015

I brought SkillFitness into the world of Android.

🤷‍♂️
Ricco Solutions
Lead Mobile Engineer
May 2013 — May 2015

I developed Android and iOS mobile applications using Java and Objective-C. This was my first step into using my skills professionally, as an intern.