Ujjwal Kumar Singh

About Ujjwal Kumar Singh

I am a Full-Stack Software Engineer with a strong foundation in backend engineering, scalable architectures, and real-time systems. Skilled in Node.js, JavaScript, React, and AWS, I have built event-driven platforms, optimized distributed systems, and deployed high-performance applications on cloud infrastructure.I excel in fast-paced, 0-to-1 product environments, contributing to system design, automation, and end-to-end development while ensuring security and scalability. With hands-on experience in microservices, real-time communication, and performance tuning, I am passionate about building platforms that connect people and handle high-throughput workloads seamlessly.Let’s connect!Skills: Node.js, Java(familiar), Python, React, Express.js, Koa.js, Redis, MySQL, MongoDB, Elasticsearch, Redis Bloom, Socket.IO, Tailwind CSS, AWS, Nginx, OAuth, Passport.js, JWT, Docker, CI/CD, System Design (HLD/LLD), Webhooks, Pub-Sub, Problem Solving (Codeforces Specialist, LeetCode Knight).

Experience

1. Associate Software Engineer, Backend

   Roundglass Living

   Aug 2024 — Present · Mohali district, IN

   Improved backend performance by offloading asynchronous tasks to worker threads, optimizing SQL queries, and redesigning table structures — reduced API latency by 30%- Architected and maintained a scalable School Portal backend serving 60+ institutions with real-time tracking of content progress and educator performance (Node.js, Koa.js, MySQL)- Implemented asynchronous task processing with Redis and Bull, using pub-sub patterns and webhooks for real-time synchronization- Developed advanced search features with Elasticsearch, delivering fast and accurate results to enhance user experience- Integrated analytics and engagement pipelines using Mixpanel (user tracking) and Braze (automated campaigns)

Education

• Dr B R Ambedkar National Institute of Technology, Jalandhar

  Bachelor of Technology - BTech

  2020 — 2024