I lead the HepsiAds team at Hepsiburada — sponsored products, search and distributed systems. 17 years of high-traffic backend work, and in the margins I publish my own mobile apps.
My day is search quality and latency; underneath it sits ingestion, index design and resilience.
Elasticsearch index design, query optimisation and relevance: analysers, synonyms, scoring.
Event-driven architecture, stream processing with Kafka and Flink, exactly-once delivery, fault tolerance.
Low-latency .NET services, capacity planning, profiling and hunting bottlenecks.
End-to-end product in Flutter: design, offline data, store releases and support.
Backend work across e-commerce, banking and insurance since 2009.
Search and advertising systems at Turkey's largest e-commerce platform; sponsored products and distributed services on the HepsiAds side.
Digitalising insurance operations for banks and financial institutions: policy, claims and pricing workflows.
The backend of the Vakko, Vakkorama and WCollection e-commerce platforms: catalogue, basket, orders and payments.
All three make it easier to keep track of someone's day; I run them alone, from design to store release.
Steroid taper diary
Shows the taper plan a doctor wrote, day by day: today's dose in tablets, a reminder, a 20-second morning check-in and a chart to show at the next appointment. No account; data stays on the phone and backups are encrypted with the user's own key.
Parenting and baby assistant
Feeding, sleep, nappy and medicine tracking with growth charts, a vaccination calendar, a weaning guide and leap weeks — the daily rhythm of more than ten thousand families in one place.
Baby tracker
Keeps sleep, feeding and growth records in one simple timeline, with a dark, one-handed interface made for night-time use.