Backend Engineer (Python & Networking)

Async Python & Network Programming (3 + yrs) - Strong hands on experience with asyncio, aiohttp/anyio, low level TCP/UDP sockets, WebSocket & SSE servers, TLS handshake, connection pooling, keep alive, and zero copy buffering. Streaming & Large Payload Handling - Ability to manage chunked transfer, bidirectional streaming, back pressure and high throughput data paths for real time LLM inference. Protocol Knowledge - Working familiarity with HTTP/2 & HTTP/3 (multiplexing, HPACK), gRPC, and occasional custom protocol parsers. FastAPI Based Backend (3 + yrs) - Design, develop and test production grade REST/Streaming APIs; pragmatic use of Pydantic, dependency injection and OpenAPI docs. Containerization & Kubernetes - Docker, AKS/EKS/GKE deployment experience; HPA/VPA scaling, rolling updates, and service mesh (e.g., Istio/Envoy) basics. Async Messaging & Event Driven Design - Production use of Redis Streams, RabbitMQ or Kafka for decoupled task queues, retries and back off logic. PostgreSQL & Vault - Advanced query tuning, partitioning, PgBouncer pooling, plus HashiCorp Vault (dynamic secrets, transit encryption) for key management. Cloud Networking & Security - L4/L7 load balancing, TLS termination, reverse proxy (NGINX/Envoy), mTLS between services, and automated cert lifecycle (ACME/Let’s Encrypt). IaC & CI/CD - Terraform modules for multi env infra, plus GitHub Actions/GitLab CI pipelines with container image scanning and canary/blue green deployments