We are building a platform that pulls information from multiple external APIs, processes and normalizes the data, and serves clean structured responses to our web and mobile applications. We also need lightweight SDKs (JavaScript + Python) so third-party developers can easily integrate with our API. What You'll Build REST API Server Node.js + Express backend with 10-15 endpoints Redis caching layer to manage rate limits and performance PostgreSQL database for user data and configurations WebSocket support for real-time data streaming Error handling with fallbacks (if one source is down, serve cached data) Deploy on Railway.app with auto-deploy from GitHub JavaScript SDK npm package that wraps all API endpoints into clean one-liner methods Full documentation with examples Publish to npm Python SDK pip package that wraps all API endpoints Full documentation with examples Publish to PyPI Required Skills 3+ years Node.js + Express PostgreSQL + Redis REST API design WebSocket (ws or Socket.io) npm/pip package publishing Git/GitHub Deployment on Railway, Render, or Heroku