Mobile App (React Native)

Dave's member-facing banking app scaled from 200K to 4M+ users while I was there. I built modular React Native screens and components so the mobile team could ship UI without rewriting every surface from scratch — part of the same promotion from Full Stack to Senior Front-End Engineer within seven months.

Title

Full Stack Engineer → Senior Front-End Engineer

Context

Mobile and web contributions during the same hypergrowth window.

Scope

React Native member app UI — reusable screens and components.

The mobile app needed reusable screens and components that could keep pace with product growth — one-off UI wouldn't scale as membership exploded.

• React Native screens

  Problem

  New member-facing flows needed to ship quickly without rewriting UI each time.

  Fix

  Modular React Native components and screens shared across the app.

  Result

  The team could ship mobile UI faster as the user base grew.

• Tests

  Problem

  Rapid growth increased the cost of mobile regressions.

  Fix

  Unit and integration tests on critical mobile and shared UI paths.

  Result

  Fewer errors reaching production during hypergrowth.

Dave scaled from 200K to 4M+ users during this period — a company result, not a personal metric. I contributed modular React Native UI and test coverage as the member app grew; promoted to Senior Front-End Engineer within seven months.