I've built high-load backend services for FinTech, CRM, business messaging, payments, and automation platforms using C#/.NET and Golang. My work spans distributed microservices, REST APIs, event-driven processing, search infrastructure, and resilient external integrations.
In a Highload FinTech environment, I reduced critical API p95 latency from 220 ms to 110 ms through PostgreSQL, Redis, and Elasticsearch optimization. I also designed idempotent Kafka and RabbitMQ processing pipelines and improved observability with distributed tracing, metrics, and structured logging.
At WATI, I built an automation rules engine that processed 20–30k events per second without p95 latency degradation, and delivered WhatsApp Catalog and Payments integrations. I helped increase service throughput by 1.5×, reduce database load by up to 20%, and process thousands of payment transactions daily without losses or duplicates.
At Domino, I contributed to billing and payment-provider integrations, improving transaction stability through idempotency, retries, SQL optimization, and stronger timeout handling. I care about reliable, maintainable production systems that remain fast under heavy load.
