Bekzhan Kadirgaliyev

I’m a Backend Engineer with 7+ years of experience building distributed systems, high-load APIs, and event-driven architectures. I focus on designing scalable backend services, improving reliability and performance in production, and delivering migrations without downtime.

In recent roles, I built FastAPI and gRPC backend services for an internal talent platform, including an executed migration of 1M+ records with zero downtime and backward-compatible schema transitions. I’ve also improved API performance by ~30% through query optimization and caching, and tackled complex relationship modeling using PostgreSQL and graph databases like JanusGraph and OrientDB.

Earlier, I designed a Go-based payment processing service with integrations to 2 banking platforms, reducing external transaction failure rate by ~20–25% via reliability improvements, retries, and error handling. I’ve led migrations of distributed Celery processing platforms handling ~1B records (boosting throughput by ~30–50%), improved operational readiness by migrating observability from Datadog to Grafana (reducing incident detection time by ~40%), and led/mentored a team of 5 backend engineers while cutting production incidents by ~30–35% through refactoring and deployment improvements.