At Ariatech IT Solutions, I engineered Spring Boot REST endpoints for ticketing and asset workflows, serving enterprise users. I also enforced ticket lifecycle rules and secured sensitive operations with role-based access control.
I reduced p95 ticket-search latency from about 450ms to under 150ms by analyzing query plans, adding composite indexes, and eliminating N+1 queries. I also automated SLA monitoring, reducing missed SLAs by 28%.
On my Fintech Digital Wallet & Double-Entry Ledger Engine project, I implemented double-entry accounting and deterministic PostgreSQL row locking to prevent balance discrepancies and deadlocks during concurrent transfers.
I used the Transactional Outbox pattern to stream transfer events to Apache Kafka, and built an idempotent consumer to prevent duplicate customer alerts. I tested concurrency, balance invariants, and messaging with PostgreSQL and Kafka containers through Testcontainers.
