Senior Software Developer building production systems that handle real traffic, real money, and real users. My work spans distributed backends, high-performance APIs, real-time data pipelines, and modern web and mobile frontends. I've delivered platforms across FinTech, Blockchain, AI, and Algorithmic Trading, where correctness, latency, and uptime aren't negotiable. ⭐ TECHNICAL STACK ★. Backend Node.js / NestJS, Python / FastAPI, Go, PostgreSQL, MongoDB, Redis, Kafka, RabbitMQ ★. Frontend React, Three.js, Next.js, TypeScript, Tailwind CSS, Vue ★. Mobile React Native, Flutter, Kotlin ★. Artificial Intelligence LLM integration (OpenAI, Anthropic), RAG pipelines, vector databases, PyTorch ★. Trading Systems Market-data ingestion, backtesting engines, exchange/broker APIs (Binance, IBKR, FIX) ★. Infrastructure Building Docker, Kubernetes, AWS / GCP, CI/CD, Terraform, Prometheus + Grafana, Odoo, Azure, ThingBoard claude.. ★. Blockchain Solidity, EVM chains, ethers.js / web3.js, smart contract integration, wallet ⭐ HOW I WORK ✔ Architecture first — schema design, service boundaries, and scaling path defined before code ✔ Typed, tested, documented code with CI enforcement ✔ Performance profiling and query optimization as a standard step, not an afterthought ✔ Security by default — auth flows, input validation, rate limiting, secrets management ✔ Clear async communication and fast response times ✔ Honest timelines and long-term support Whether you need a product built from scratch or an existing platform stabilized, refactored, or scaled, I can own the technical side end to end. Message me with what you're building and I'll tell you exactly how I'd approach it.