At Ananas.mk, I’ve shipped 9 internal web apps that replace spreadsheet-driven workflows, with 2 more in progress. On a delivery operations dashboard, I traced mismatched figures to their root causes and fixed them with regression tests.
I’ve also fixed issues including out-of-order concurrent refreshes and a UTC-versus-local date bug. For my Sopatnik carpooling app, I designed race-safe seat booking in PostgreSQL and closed two flaws found in a security review.

