Full Stack Development
Backend: Python, FastAPI, Node.js, Express, REST APIs, WebSockets, microservices, event-driven architecture.
Frontend: React.js, Next.js (SSR / SSG / ISR), TypeScript, JavaScript, Redux, React Native.
Databases: PostgreSQL (advanced tuning, WAL, CDC, partitioning, row-level security, multi-tenant RBAC), Supabase, SQL, NoSQL.
Cloud & DevOps: AWS (Lambda, S3, EC2, ECS/Fargate, RDS, API Gateway, CloudWatch), Docker, Docker Compose, GitHub Actions, Azure DevOps.
AI & Agents: OpenAI API, RAG pipelines, pgvector, LLM integration in production, Claude Code, Gemini CLI, GitHub Copilot.
Observability: OTEL (OpenTelemetry), Grafana, CloudWatch, distributed tracing, structured logs, SLOs/SLIs.
Quality: TDD, Jest, Clean Code, SOLID, DDD, Design Patterns, Clean Architecture, Code Review.