# Database Migration & Modernization

> Selected work demonstrating this service.

- [Improved geographical map application performance by 10x through strategic database transition from MSSQL to PostgreSQL, optimizing processing and data security.](https://engineer.company/portfolio/improved-geographical-map-application-performance-by-10x-through-6/)
- [Kept the schema honest across 1,022 migrations with a CI gate that builds the database both ways — a fresh install, and an install plus every migration — and fails when the two disagree.](https://engineer.company/portfolio/kept-the-schema-honest-across-1022-migrations-99/)
- [Moved every user‑facing string out of Python into a content tree of 874 files across three languages, after finding dead translations nobody could see were dead and a check silently grading a third of the achievements.](https://engineer.company/portfolio/moved-every-user-facing-string-into-a-content-tree-152/)

<https://engineer.company/services/database-migration/>