RAJAGOPAL KRISHNARAJ
Hi, I am Rajagopal Krishnaraj, a software and IT professional with 7+ years of experience, including 4+ years in full-stack and backend development.
About
Hi, I am Rajagopal Krishnaraj, a software and IT professional with 7+ years of experience, including 4+ years in full-stack and backend development. I thrive on building scalable, real-time, cloud-based systems using JavaScript, TypeScript, Node.js, Express.js, React.js, and Python, with strong know-how in RESTful APIs, GraphQL, and SQL/NoSQL databases.
I have delivered secure authentication and real-time communication features, deployed on AWS, and worked in Agile teams to ship reliable platforms with performance and security at the forefront. Based in Singapore (EP holder) and open to immediate joining.
- 4 years' experience
- Joined April 2026
Industry experience
- Software & Internet
- Healthcare
- Professional Services
Work experience
Developed a real-time health monitoring platform for wearable devices using Python, Node.js, React.js, PostgreSQL, and AWS. Implemented Bluetooth data ingestion from PPG sensors, processing heart rate and blood pressure every 2 seconds. Built real-time dashboards, emergency alerts, and doctor–patient chat, audio, and video calling using Socket.io. Designed secure authentication using JWT and ensured system scalability and high availability on AWS.
Built scalable backend systems and APIs using Node.js, Express.js, PostgreSQL, MongoDB, and Redis. Developed role-based access control systems, staff management platforms, and real-time chat applications. Optimized backend performance for high concurrency and reliability. Worked closely with frontend teams to ensure seamless full-stack integration.
Education
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