The problem
Moving off a legacy system is rarely a single clean cut-over. Each transition needs tooling that fits the specific source and target, and — just as important — a way to see how far a run has progressed and where it stalled, rather than running blind.
What I built
I built custom migration tooling in Python and FastAPI for legacy-to-modern system transitions. Alongside the data-movement logic, it exposed progress monitoring so each run’s status was visible end to end, turning a one-off script into a repeatable, observable process.
Outcome
Legacy-to-modern migrations became repeatable and observable, with progress monitoring giving clear visibility into every run.