ITMC Digital
Jan 2026 – Present
Software Engineer & Team Lead
Helping build ITMC Digital from the ground up, shaping products, systems, and the technical direction behind them.
India
I'm Biswajit, a software engineer who started with the backend and somehow ended up caring about the whole product. These days I work across backend systems, frontend, infrastructure, and the occasional design rabbit hole.
Internal platforms, side projects and the odd experiment, mostly backend with a frontend I care about.
All of LabsCapricorn Identity Services
Jul 2024 – Dec 2025
Associate Developer
Worked across development and automation for certificate workflows, while leading a small team and taking ownership of key technical work.
2022
Winner, Smart India Hackathon
Grand Finale, on a UIDAI (Aadhaar) problem statement.
Read the story
Big ideas are easy. Making them happen? That's the fun part. I like getting my hands dirty. Got something cooking?
I had the pleasure of working with Biswajit and was consistently impressed by his technical expertise, ownership, and professionalism. He is a strong Backend Engineer with excellent knowledge of Java and Spring Boot, always focused on building reliable and scalable solutions. A great team player with leadership potential, Biswajit would be a valuable addition to any engineering team. I highly recommend him.
· 7 min read
Idempotency, Deduplication and Memoization Are Not the Same Thing
Three ideas that all sound like "don't do it twice". They solve different problems, and mixing them up leads to slow code at best and double charges at worst.
Read· 10 min read
LRU Cache Explained: Design, Java Implementation, and the Mistakes That Trip Up Senior Engineers
A deep, practical walkthrough of how LRU caches actually work, how to build one correctly in Java with a HashMap and a doubly linked list, and the subtle mistakes that cause bugs in interviews and in production.
Read· 4 min read
Stop Designing REST APIs Wrong: 10 Mistakes Developers Keep Making
A practical guide to the 10 REST API design mistakes that create confusion, break clients, and add technical debt, with clear fixes for each.
Read· 9 min read
Cut Your LLM Token Bill in Half - How TOON Rewrites the Rules of JSON
Discover how TOON (Token-Oriented Object Notation) can reduce your LLM API costs by 30-60% through smarter data formatting designed specifically for AI applications.
Read
I’m hungry.
…for good projects, good problems, and things worth obsessing over.
I’m young, I move fast, I communicate well, and I care a stupid amount about what I build. If something’s worth obsessing over, I don’t care whether it’s 10 a.m. or 2 a.m. Sometimes you just keep going until the damn thing works.
0 → 11 → 100I’m up for both.
Tell me what you’re buildingInternet is my favorite thing.
Somewhere between these connections, the internet happens.
© 2026 Biswajit Rath