• 💻 Full Stack Engineer with 4 years of experience building scalable mobile, web, and backend systems
• 📱 Led development of a hybrid smart home app (React Native) from scratch to production
• ⚙️ Built modular SDKs and unified data layers powering real-world IoT systems
• 🧠 Strong focus on system design, scalability, and developer experience
• 🌍 Currently working at Espressif Systems (Shanghai)
• 📫 Reach me: ssonawane511@gmail.com

• Building end-to-end products (mobile + backend + APIs)
• Designing scalable architectures for real-world systems
• Developing SDKs and reusable abstractions
• Improving performance, reliability, and debugging systems

Languages
TypeScript, JavaScript (ES6+)

Frontend & Mobile
React.js, React Native, Next.js, MobX, Redux, React Query, Tailwind CSS

Backend
Node.js, Express.js, PostgreSQL, MongoDB

Infrastructure & Tools
AWS, Docker, Grafana, Loki, GitHub Actions, Sentry

Software Engineer — Espressif Systems (Shanghai)
Jun 2022 – Present

• 🚀 Led development of a React Native hybrid app by selecting framework and defining architecture
• 🏗️ Designed scalable system architecture (data flow, modules, workflows)
• 📦 Built TypeScript SDK (npm) unifying 100+ backend APIs
• 🔄 Developed reactive data layer (MobX) for consistent app state
• 📱 Delivered smart home platform (device control, automation, lifecycle)
• 🔗 Architected decoupled system supporting multiple backend integrations
• 📊 Built observability pipeline (logs, metrics, errors) using Grafana + Loki
• ⚡ Improved debugging, reliability, and developer efficiency across systems

Smart home mobile application for device control and automation

• React Native, TypeScript, MobX
• GitHub: https://github.com/espressif/esp-rainmaker-home

TypeScript SDK for backend integration and device management

• Node.js, OOP, API abstraction
• NPM: https://www.npmjs.com/package/@espressif/rainmaker-base-sdk