Himanshu R.

Full-Stack Backend Developer | AI & Blockchain Specialist $35/hr | 5+ Years Experience I build robust, scalable, and intelligent backend systems for web and mobile applications. My expertise includes Node.js, MERN, AI/ML-powered backends, and blockchain development, delivering secure, high-performance solutions for SaaS platforms, real-time apps, and decentralized applications. I specialize in API design, real-time processing, and AI-driven automation for reliable and future-ready systems. Core Competencies Backend Architecture & API Development ✨ Node.js, TypeScript, JavaScript, Express ✨ REST & GraphQL APIs, JWT & OAuth2 authentication ✨ Microservices, modular architecture, and scalable system design ✨ Task scheduling, background jobs, logging, and automated workflows AI & Machine Learning Solutions 🤖 Integration of GPT, Claude, and other LLMs for chatbots, semantic search, and workflow automation 🤖 AI pipelines for parsing, filtering, recommendations, and intelligent data processing 🤖 AI-enhanced real-time features for smarter user experiences Real-Time Systems & Multiplayer Logic ⚡ WebSockets, Socket. IO, and real-time game logic ⚡ Low-latency live updates, messaging systems, and notifications Blockchain & Decentralized Systems 🔗 Ethereum, Polygon, BSC, Solana, Tron, Polkadot 🔗 Smart contracts, NFT marketplaces, token governance 🔗 Wallet integrations, cross-chain bridges, and secure blockchain logic Data Management & Optimization 💾 MongoDB, PostgreSQL, MySQL, Firebase, Redis 💾 Bulk operations, caching, AI-powered queries, and high-traffic optimization Cloud Deployment & DevOps ☁️ AWS, DigitalOcean, Docker, Kubernetes ☁️ CI/CD pipelines, monitoring, logging, and performance profiling Notable Achievements 🏆 Built AI-powered SaaS backends with intelligent automation 🏆 Developed real-time multiplayer systems and chat applications 🏆 Delivered blockchain-enabled backends, NFT marketplaces, and decentralized applications 🏆 Optimized high-traffic backends for performance, reliability, and scalability 🏆 Integrated AI pipelines for data parsing, semantic search, and smart recommendations Why Work With Me 💡 Backend-First Expertise: Scalable, secure, high-performance systems 💡 AI & Automation: Intelligent workflows and data-driven backends 💡 Blockchain & Web3: Smart contracts, NFT platforms, and decentralized integrations 💡 Maintainable & Clean Code: Test-driven development and best practices 💡 Agile & Transparent Delivery: Clear communication and reliable timelines