25+ years in development. Deep focus on architecture, concurrency, and high‑load systems.

• Distributed Systems: message brokers (NATS, Kafka, RabbitMQ), async processing, eventual consistency
• Concurrency Control: semaphores, mutexes, atomic operations, shared memory
• High‑Load Optimization: SQL tuning, caching strategies, memory profiling, ETL pipelines
• Legacy Evolution: gradual migration from PHP 5.x to 8.x, decoupling monoliths
• Observability: OpenTelemetry, Jaeger, custom metrics, WebSocket telemetry
• Clean Architecture: DTO, DI containers, service providers, separation of concerns

Task orchestrator on PHP Swoole + NATS + Go WebSocket proxy

• Async workers with global/local semaphores
• NATS JetStream as persistent queue
• Go WebSocket proxy with binary protocol (9 bytes per message)
• Custom load balancer with instance health checks
• Distributed semaphores via Redis + Lua (255 slots, TTL)
• OpenTelemetry + Jaeger for distributed tracing

Stack: PHP 8.4 (Swoole 6), Go 1.26, NATS, Redis, Docker

• Full autonomy: self‑organized, result‑oriented
• Deep focus: rural location, no distractions
• Long‑term commitment: 10+ years stability preferred
• Remote only

Available for Lead / Senior Backend positions. Focus on distributed systems and high‑load architecture.