What I Did When I Inherited Bad Tech

A frontend lead shares how they turned around a struggling engineering team with a shaky codebase and two junior engineers. The approach centered on three strategies: incremental migration instead of a full rewrite, consolidating multiple platform codebases into a monorepo with shared web technologies (TypeScript/TSX) to eliminate code duplication across iOS, Android, and web, and actively mentoring junior engineers through 1:1s, lunch-and-learns, scaffolding, and mandatory code reviews. The rewrite was completed in six months, the website in under a year, and the primary client's app usage grew 350%.