At Tsoftware, I protected balance consistency for a cryptocurrency exchange by using database-backed idempotency keys and PostgreSQL row-level locking. I also extracted trading functionality from a monolith into a dedicated Laravel service.
For Tsoftware’s telemedicine platform, I owned delivery of the scheduling subsystem and encrypted patient scheduling records before database storage. I mentored six junior developers and introduced mandatory PHPUnit coverage gates in GitLab CI.
At Flyorient, I reduced database query latency by 35% through SQL profiling, composite indexes, and changes to search-result persistence. I also improved flight search by parallelizing airline API requests and moving filtering to the Vue.js client.
