Headline

Backend Engineer | Node.js · NestJS · TypeScript · Microservices | Building with LLMs

About

I build backend systems with Node.js and NestJS: multi-tenant microservices, REST APIs, and the data layer underneath them (TypeORM, MySQL, PostgreSQL). At BTF Technology I helped ship a cross-platform desktop app to the Microsoft Store in 3 months, and replaced a polling job with Microsoft Graph webhooks, cutting API calls by ~99%. I care about correctness under real data: fixing join bugs, cache invalidation, and paginated tree queries that break in production. I also build with LLMs (Anthropic Claude API certified) and write about using AI responsibly in my “AI with Intent” series. Open to Backend / Full Stack roles: remote (India), Bengaluru, Hyderabad, Kolkata.

Location

Mysore

AI stack

anthropic apis

antigravity

claude code

claude

codex

hugging face

Work experience

Junior Software Engineer at BTF Technology, Oct 2024 - Present · 2 yrs 2 mos, Mysuru, Onboarded to a production NestJS/TypeScript codebase within the first two weeks, contributing bug fixes and feature additions to a live microservices backend. Wrote and maintained Jest unit tests across multiple service modules, building familiarity with test-driven patterns in a CI/CD environment. Built and shipped a cross-platform desktop application using ElectronJS and Angular, successfully publishing it to the Microsoft Store — one of fewer than 5 ElectronJS apps in the company's portfolio. Refactored a NestJS microservices backend with TypeORM, resolving TCP message pattern auth bugs and query alias mismatches that had caused recurring data integrity issues across services.

Trainee Software Engineer at BTF Technology, Apr 2024 - Oct 2024 · 7 mos, Mysuru, Karnataka, India, Architected a Microsoft Graph webhook subscription system that replaced polling-based API calls, reducing external API load by ~90% and improving data freshness from minutes to near-real-time.

Data Engineer Intern at DaveAI, Jan 2024 - Mar 2024 · 3 mos, Bengaluru, Karnataka, India, Worked with data pipelines in an AI/conversational product company, gaining exposure to ML-adjacent infrastructure and real-time data flows. Collaborated cross-functionally with product and ML teams to understand data requirements and translate them into structured queries and transformations.

Education

Bachelor of Technology - BTech, Engineering, Maulana Abul Kalam Azad University of Technology, West Bengal formerly WBUT

Public links

github: https://github.com/Ritom-Chak