Rajat User

I am a seasoned senior software engineer with 4+ years designing and delivering high-performance applications, having led and contributed to 35+ projects across web, Android, and iOS platforms. I focus on production-ready architectures that scale reliably under heavy load.

I have driven development of 20+ real-money slot games and multiple multiplayer titles, implementing advanced features like jackpots, bonus rounds, free spins, auto cash-out, and bot integration. I design and validate RNG and RTP frameworks, running 1B+ simulations and integrating provably fair HMAC-SHA256 systems for transparency and compliance.

My technical work centers on backend and real-time systems using Node.js, TypeScript, Kotlin, GraphQL, Redis, PostgreSQL, and AWS, and I have engineered worker-threaded services, shared-memory patterns, Redis caching, and low-latency WebSocket/Socket.IO systems. I optimize performance, reduce latency, and build resilient systems for concurrent players at scale.

I enjoy mentoring engineers, leading code reviews, and collaborating with product, design, and QA to deliver on schedule. I continuously explore new technologies and best practices, and I am motivated by challenging problems that improve reliability, fairness, and player experience.