Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

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.…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.

RAJAGOPAL KRISHNARAJ

Full Stack Developer, Web Developer, Front-End Developer, +2





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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Work Experience

Software Developer (Remote) at KRhythm Sensing Technology Ltd.

June 1, 2024 - November 1, 2025

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.

Software Engineer at AIML Data logics Private Limited

October 1, 2021 - May 1, 2024

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.