Arpit RautelaBackend Engineer · Production AI Systems
Backend systems with LLMs in them.
Built to behave in production.
I build backend services and the AI features that run on top of them — focused on latency, reliability, and keeping production uneventful.
Things I've Built
Backend and real-time systems focused on performance and reliability.
Recall
Chat-with-your-documents platform. Upload PDF or DOCX and query them through a citation-backed agent, streamed token by token.
Curie
Live audience-experiment platform, run with 24 participants on their phones.
CodePair
Real-time collaborative coding platform over WebSockets.
Real-Time Location Tracker
Live location tracking with instant positional updates.
Work Experience
A timeline of my professional journey and backend experience.
Graduate Engineer — Backend Engineering
OneAssist Consumer Solutions
Nov 2025 — Present · Gurugram, Haryana
Java Backend Developer Intern
OneAssist Consumer Solutions
May 2025 — Nov 2025 · Gurugram, Haryana
Backend Developer Intern
Airtel Digital
May 2024 — Jul 2024 · Gurugram, Haryana
Technical Stack
The technologies I use to design scalable backend systems, integrate intelligent workflows, and maintain reliable production services.
Backend Engineering
AI & LLM Systems
Databases & Storage
DevOps & Tooling
Languages
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I work on backend systems — the part of software that users don’t see, but blame anyway.
Right now I'm the sole backend engineer on a benefits platform used across 40+ enterprise clients, which means I own the Spring Boot services behind it, the AI features built on top of them, and the pager when either misbehaves.
Most of what I find interesting sits where those two meet: making a RAG assistant answer in five seconds instead of thirty, deciding what a retrieval system should do when it isn't confident, working out why a service quietly exhausts its heap every other day. Problems where scale, reliability and imperfect inputs collide.
Clean architecture excites me. Debugging production at 1 AM — slightly less.