Karen Petrosian

I’m a Senior Java Backend Engineer with 4.5+ years of experience building high-load distributed systems (100k+ ops/day) in fintech and industry, including Sber, Russian Railways, and NLMK. I specialize in event-driven architecture, microservices, and scalable backend platforms that stay stable under real production pressure.

At UMBRELLA IT, I develop and evolve a high-load distributed platform (30+ microservices) for end-to-end tracking of production operations in the NLMK ecosystem. I contribute to architecture, integrations with corporate WMS/MES and external APIs, and introduced a metal movement tracking mechanism using the outbox pattern—resulting in 100,000+ operations/day processing, ~40% faster processing, and ~60% fewer system errors.

Previously, I designed and implemented a distributed EDI system for electronic document exchange at Main Computing Center of Russian Railways, leveraging Kafka- and Spring Cloud-based event-driven processing for reliable delivery and asynchronous integration. I also teach database engineering at HSE University, bringing practical, production-oriented experience into how I work and how I help students think about engineering tradeoffs.