I build practical backend and Web3 integrations for APIs, dashboards, data pipelines, and automation workflows. I have 3 years of hands-on experience with Python and Node.js projects, REST APIs, databases, testing, monitoring, and production-oriented troubleshooting. I can develop Python and Node.js backend services, integrate REST APIs and webhooks, handle authentication and data processing, connect applications to blockchain and Web3 services, support wallet connectivity and transaction monitoring, work with smart-contract SDKs, and build market-data pipelines. I also work with PostgreSQL and SQLite, database schemas, audit logs, migrations, scheduled workers, automation scripts, bots, testing, debugging, validation, documentation, and deployment-ready setup. I focus on clean, maintainable code, clear communication, reproducible tests, and secure credential handling. I can work from an existing codebase or build a focused solution from a clear specification.