Oleg Mihajlov
Software Engineer focused on backend systems and infrastructure. Experience at Stripe, Spotify, and more.
About
CS student at TU Berlin. I build tools that help engineers understand and operate their systems — from monitoring platforms to cost optimization tooling at Stripe, to performance and engagement work at Spotify. Currently focused on anti-fraud systems in fintech.
Experience
Software Engineer
Building backend systems for the anti-fraud team at a payment processing company. Working on real-time transaction scoring, fraud detection pipelines, and payment risk evaluation at scale.
Software Engineer
Built a monitoring platform that gives engineering teams real-time visibility into system health, improving incident resolution speed. Shipped a week ahead of schedule, exceeding the original scope. Automated deployment processes and resolved scalability bottlenecks to support production workloads.
Software Engineer
Built a tool that analyzes Prometheus metric usage and costs across Stripe's infrastructure. Worked with 3 teams to identify unused metrics, enabling potential savings of 40%+ on Amazon Managed Prometheus. Designed a near real-time data pipeline and dashboard UI for cost visibility.
Software Engineer iOS
Improved the Podcast Episode page with data-driven design changes — 4.3% increase in user retention and 15% boost in engagement within 3 months. Cleaned up 4,000+ lines of obsolete code and brought test coverage above 90%.
Education
Computer Science (Informatik)