Hello, I'm
Lalit Aswal
Node.js Backend Developer
Building scalable systems using Node.js, AWS, PostgreSQL, Redis, and Microservices. Crafting high-performance APIs and real-time applications.
Who am I? About Me
I am a passionate Backend Developer with 4.5+ years of experience building scalable and robust systems. My expertise lies in Node.js, Express.js, PostgreSQL, MongoDB, Redis, Docker, and AWS.
Throughout my career, I've specialized in crafting REST APIs, microservices, real-time web applications, and event-driven architectures. I pride myself on optimizing system performance, having successfully reduced API latency by 40% and improved processing efficiency by 40% in previous roles.
Beyond writing code, I am deeply committed to engineering best practices, mentorship, and continuous learning. I love diving deep into architectural design discussions and conducting thorough code reviews to ensure the delivery of high-quality software.
Technical Arsenal
Tools and technologies I use to build robust applications.
Languages
Backend
Databases
Messaging
Cloud & DevOps
Testing & Tools
Professional Journey
My career path and achievements.
Solution Engineer
GammaStack
- Built scalable Node.js + PostgreSQL backends for high-concurrency gaming apps; reduced API response times by 35% using Redis caching.
- Developed RTP simulation systems, improving backend processing efficiency by 40%.
- Optimized PostgreSQL queries, indexing, and data models; managed Docker + AWS ECS deployments.
- Mentored junior developers via code reviews, pair programming, and design discussions.
Software Developer
Tech Believer
- Built RESTful APIs and real-time WebSocket + Redis systems; improved API performance by 40% via query optimization & caching.
- Designed MongoDB schemas; implemented auth, validation, and error handling; reduced production costs by 30%.
- Led code reviews, enforced unit testing (Mocha), mentored team members on Node.js best practices.
- Resolved critical production issues across KhiladiAdda, Mysterio, and Rummy gaming applications.
SDE I
Classplus
- Maintained Node.js + Express.js REST APIs in a microservices architecture.
- Implemented multi-campaign functionality and optimized performance using SSR.
- Participated in agile ceremonies, design reviews, and cross-team collaboration.
Software Developer
Keywords Studio
- Developed an internal application to digitize employee rewards and recognition while automating approval workflows.
- Performed QA testing for AAA titles on PlayStation 4, PlayStation 5, and Steam.
- Created bug reports and coordinated with engineering teams for resolution.
- Mentored interns on backend development, version control, and debugging.
Selected Projects
Some of my open-source work on GitHub.
Booking_App
MEAN Stack project to book train tickets. Built with a focus on scalable backend architecture.
Blogging-App
A comprehensive MERN stack blogging application featuring user authentication and post management.
Library-Management
A comprehensive backend system for managing library operations, including book inventory and member borrowing.
Let's Connect!
Open for opportunities and discussions.