Alexandre Stelzig — Mobile Developer

Experience

Where I've Worked

Pok Pok · Full-time · Toronto, ON · Remote

Apple Design Award Winner · TIME 100 Most Influential Company 2025

Mar 2024 — Present · 2+ yrs

Sole Android developer responsible for building the Pok Pok Android app from the ground up by integrating the existing Unity project into a new multi-module Compose KMP architecture and successfully launching it on both Google Play and the Amazon Appstore for 100k+ users.
Responsible for everything growth-dev related for the Android application, including customizable onboarding, payment processing, AB testing, cross-platform synchronization and more.
Introduced and integrated multiple third party libraries to improve cross-platform processes and achieve our KPIs: Firebase, RevenueCat, Singular, MailChimp, MixPanel and more.
Contributed to the creation of the web app which allow users to purchase and manage their web account using: React/Typescript, Stripe, Vercel, Sanity, Firebase, RevenueCat.
Worked closely with teams across the company - including Product, Marketing, Customer Service and CRM - to identify their needs as well as propose and implement effective solutions.
Laid the foundation for marketing tracking by implementing tools such as CAPI, Facebook Pixel and Singular.
Introduced AI as a tool (Claude and Copilot) to the team, establishing developer-supervised workflows that boosted overall productivity.
Initiated the development of custom internal solutions after identifying key operational inefficiencies, such as the lack of an onboarding previewer and a centralized customer support admin website.

Kotlin KMP Compose Unity React TypeScript

BetterSleep by Ipnos · Full-time · Greater Montreal Area

Improving sleep for 55M+ people · Acquired by Teladoc Health in 2021

Jan 2019 — Mar 2024 · 5 yrs

Lead Android developer on the growth team — shipped features with direct impact on revenue and KPIs.
Integrated an in-house custom library into onboarding, bridging Kotlin and C++ code with essential callbacks, significantly increasing revenues.
Developed the Android subscription manager for Google, Amazon, and Huawei alongside cross-platform profile synchronization.
Contributed to key app functions: onboarding, home feeds, remote configs, sleep tracking, guided content streaming, ambient sounds and more.
Introduced developer best practices — KMM, 100% Kotlin, Compose, unit testing, whiteboard processes — to enhance quality and reduce miscommunication.
Implemented Firebase, Mixpanel, Iterable, AppsFlyer, and Intercom for user behavior analysis.

Kotlin Android Jetpack Compose KMM Firebase