Tomo Hirata

Legacy Frontend Modernization

Contributing to incremental frontend modernization while product delivery continued.

ID
N-02
Type
Past / Professional
Stage
Shipped
Role
Software Engineer
Area
Frontend modernization

Context

A long-lived B2B software product needed parts of its frontend modernized alongside ongoing product development.

Constraint

The running product could not simply be stopped and rewritten.

Changes had to preserve existing behavior and API compatibility while fitting the tests and release process.

What I contributed

  • Investigated the existing frontend implementation.
  • Implemented frontend changes in TypeScript.
  • Contributed bug fixes, hotfixes, reviews and pair work.

Approach / key decisions

  • Understand existing behavior before changing it.
  • Modernize incrementally while preserving compatibility with existing APIs.
  • Keep changes testable during ongoing development.

Evidence

Contributed API-connected UI changes, testing and release support to a running B2B product.

What I learned

Modernization requires balancing architecture changes with ongoing delivery, testing and operational risk.