Umut Oku

Seeking senior .NET backend roles with system design and end-to-end ownership across product, search, data, messaging and operations. Based in Istanbul; remote from Türkiye. Open to Turkish employment and international contractor roles. Minimum: TRY 200,000 net/month. TRY 2,400,000/year is the net target; gross compensation must be agreed separately. At OZDISAN ELEKTRONİK SAN. TİC. A.Ş., I develop .NET microservices across product catalogs, search, identity, orders, integrations, and payments. I redesigned Elasticsearch category projection and rebuild coordination, addressing hierarchy mapping and concurrent rebuild requests, and added regression tests. I also developed shared MediatR publishing strategies so applications can choose sequential fail-fast execution or collect-all-errors handling. My day-to-day work includes PostgreSQL projections, Redis caching, Kafka workflows, and tracing cross-service issues through logs, jobs, and containers. Earlier, I worked on Platform 360, an industrial IoT and automation platform at KoçDigital, and on banking technology support and ERP integration workflows at QNB Finansbank. I continue exploring Semantic Kernel, RAG, and agent workflows through personal projects, and I’m interested in senior backend engineering roles involving system design, hands-on implementation, and reliability.