Marcel Soubkovsky - Logo

Selected project

Stepplr - Goal Tracking App

Goal-tracking app that turns big goals into smaller, social steps.

Built the React Native and Firebase stack with onboarding and motivation loops.

Year

2021

Role

Full-stack mobile engineer

Focus

mobilehabit loopsFirebase
Stepplr onboarding and dashboard
Stepplr progress tracking
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Technologies & Tools

React NativeReduxTypeScriptFirebaseExpo

Tasks

Product engineeringFull‑stack developmentProject management

The Vision

Big goals are intimidating. Stepplr was built on a simple insight: break goals into small, achievable steps, and suddenly they become manageable. Add some motivation through trophies and the ability to work with friends, and you've got something people actually want to use.

Building It Together

I worked alongside Charles Bechaud, who handled the marketing and UX/UI design. I handled everything on the technical side: designing the architecture, building the entire app with React Native and Expo, and implementing the backend with Firebase.

It was true full-stack work: from UX prototypes to backend logic to release pipelines. I got to see how all the pieces fit together to create a cohesive product.

What I Learned

Stepplr taught me how to think about habit formation and user motivation. It showed me that sometimes the simplest ideas, breaking things into steps, are the most powerful. The experience strengthened my full-stack mobile skills and validated my approach to building products that people actually want to use.