Credit Union Cooperjohnson

Lead Full Stack Developer

Ruby on Rails, PostgreSQL, ERP Integration

Remote, BR

2021 — 2024

From Legacy Maintenance to Digital Autonomy

Cooperjohnson owned a critical Ruby on Rails system that suffered during transitions between various consultancies. The challenge was to take over a complex legacy codebase, ensure operational stability, and modernize business rules without service interruption.

As the direct project lead via my own firm, I acted as designer, front-end, and back-end developer to translate the credit union's operational needs into tangible, high-performance features.

Refactoring & Strategic Integration

Stability and User Trust

3+ Years

Of direct support and continuous evolution

100%

Digital Signature Adoption

Taking over Cooperjohnson was a milestone of professional maturity. Beyond maintaining code, I was responsible for ensuring the system served people, optimizing credit release processes that were previously slow and prone to human error.