I’m Rajeev Kumar, a Senior Software Engineer with 5 years of experience building scalable backend systems and real-time applications. I specialize in C#, .NET, ASP.NET Core, REST APIs, PostgreSQL, TimescaleDB, RabbitMQ, Angular, and distributed systems. I have worked on large-scale IoT and enterprise projects involving real-time event processing, high-volume data ingestion, messaging systems, and production deployments. I also have open-source contribution experience, including contributing to Orchard Core, and I actively explore and contribute to the developer community. I enjoy mentoring developers and helping software engineers prepare for backend/.NET interviews, system design, architecture, and career growth, with practical guidance based on real-world production experience.