Backend Engineer interested in Go, distributed systems, and observability.

I enjoy building backend systems, finding bottlenecks through measurement, and improving them with a focus on reliability.

A distributed chat backend built with Go, gRPC, WebSocket, and Kubernetes.

• Designed WebSocket routing with consistent hashing for horizontal scaling
• Preserved message ordering during instance ownership changes
• Separated real-time fan-out from persistence with asynchronous batch writes
• Built observability with OpenTelemetry, Prometheus, Loki, Tempo, and Pyroscope
• Load tested with 10,000 concurrent WebSocket connections
• Reached approximately 2K msg/s ingress and 200K msg/s fan-out
• Improved bottlenecks using k6 load testing, metrics, traces, and profiling

→ See the repository for architecture, performance reports, and design trade-offs.

• Go open-source contribution
• Distributed backend architecture
• High-throughput messaging and concurrency
• Performance engineering and load testing
• Observability internals