Senior backend engineer and team lead. I design and operate distributed systems in Go and Python — event-driven microservices over Kafka and gRPC, a real-time ClickHouse analytics stack, and money-critical flows made safe with idempotency and observability. I currently lead a team of four on a B2B payments platform, turning product ideas into production-ready systems.
Experience
Backend Team Lead / Senior Backend Engineer (Go / Python) · Korvax
Jul 2022 — Present
Cyprus (remote) · Backend architecture and technical leadership for a B2B payments platform — distributed microservices, event-driven integrations, and a real-time analytics stack. Korvax delivers custom digital products and business systems for clients across multiple industries, including financial services.
Led a team of 4 backend engineers — owned architecture direction, set code-review and testing standards, and mentored the team to ship independently.
Architected billing, notification, and crypto-payment microservices in Go (Gin) and Python (FastAPI), using gRPC for synchronous calls and Kafka for event streaming between services.
Made money-critical flows safe under retries and duplicate delivery with idempotency keys and a producer outbox → consumer inbox dedup pattern — eliminating double-processing of payment events.
Designed a dedicated ClickHouse reporting service that ingests payment events via Kafka, isolating analytics from the transactional PostgreSQL path and cutting report generation from ~30s to under 2s as volume grew past 1M+ events/day.
Optimized PostgreSQL and ClickHouse for analytical workloads — connection pooling, partitioning, and pre-aggregation — keeping reporting fast as data grew.
Instrumented production observability with OpenTelemetry tracing, Prometheus metrics, and Grafana SLO dashboards, cutting incident MTTR from ~20 to ~5 minutes.
Remote · Built custom web and backend solutions for SMB clients, focusing on CRM systems, third-party integrations, and business process automation. Amit agency is a software development agency building custom web platforms, CRM systems, and SaaS integrations for small and medium-sized businesses.
Migrated a monolithic e-commerce platform to microservices (FastAPI, PostgreSQL, Redis) incrementally with an expand/contract approach — each service proven in production before the next cut, keeping the platform at ~100% uptime throughout.
Built a custom CMS for the e-commerce platform hodoor.com, powering catalog and content for international expansion.
Designed an automated translation pipeline for 30+ languages on Celery task queues and Yandex Cloud Translate — localizing content continuously with human spot-checks instead of manual translation.
Set up CI/CD on GitLab (Docker + Swarm) and Sentry error monitoring — turning manual deploys into repeatable releases and surfacing production errors before users reported them.
Built ETL pipelines to migrate data from legacy systems without downtime.
Designed authentication and UGC modules (chats, reviews) with real-time delivery over WebSocket.