Sarwajeet Sinha

Senior Product Engineer with 4+ years of experience building and scaling production-grade mobile and web applications across Android, iOS, Web, and Android TV. Delivered 3 large-scale applications, each exceeding 100,000+ downloads, across Android, iOS, and Web platforms, with 4.3+ ⭐️ rating. Strong expertise in Flutter architecture, performance optimization, and cross-platform system design, with hands-on ownership of end-to-end features from UI to deployment. Proven track record of delivering high-traffic consumer apps and internal tools, including a mobile + web launch at WeCredit, real-time WebSocket-based chat systems, and large-scale education platforms serving 100K+ users. Experienced in designing clean, modular architectures, implementing robust state management, and integrating secure, scalable APIs. Hands-on with AWS-based CI/CD pipelines, Dockerized deployments, and modern web practices. Comfortable working across frontend, backend integration, and deployment, with a strong focus on performance, reliability, and business impact.