RohanS

Software Engineer Aug 2025 – Present

Clearsight Technologies · Onsite, Bangalore

Turned inventory volatility into sellable demand — architected a 99%-accurate, self-healing pre-order engine across 50K products that flips SKUs between buy-now and pre-order as stock moves, so merchants never hand-manage availability and customers can still buy when stock runs out; a serverless, webhook-driven reconciler corrects platform drift (architecture)
Built the live-selling revenue path — one ZegoCloud WebRTC broadcast fanned out to six destinations, each platform isolated behind its own state machine so a failed destination drops out without killing the sale; drove a 15% increase in live-session revenue
Built apptile-harness, an AI context layer that models our services as a knowledge graph instead of markdown — giving engineers and agents accurate, multi-hop service context that stays in sync with the codebase
Shipped an in-product “Get Help” AI assistant in the live-streaming service that chats with merchants and debugs their session live — grounded in harness for product knowledge and wired to the client’s network requests, so it sees exactly which calls are failing for that user; built on the Vercel AI SDK for model routing and tool calling
Automated support triage end-to-end — inbound issues are parsed, classified by area and severity, and filed as Linear tickets pre-assigned to the owning team, removing manual assignment and cutting time-to-assignment
Built a citation-backed RAG layer over internal specs, changelogs, and integration docs — giving the ops team self-serve answers on current product capabilities and cutting the volume of “can we support X?” escalations into engineering

Backend Engineering Intern May 2025 – Jun 2025

GoQuant · TypeScript, Node.js, Prometheus, Grafana · Remote

Achieved <500ms latency for near real-time alerting using async event-driven architecture and optimized data pipelines
Constructed Grafana dashboards tracking KPIs like block times and transaction fees for data-driven performance improvements

SubSearch

Live GitHub

Node.js / TypeScript, FastAPI, ChromaDB, sentence-transformers, Docker

Built a full semantic search pipeline over Reddit — scrape → embed → store → query — with zero keyword matching; each post is embedded via a self-hosted all-MiniLM-L6-v2 sidecar and stored in ChromaDB
Wrote the embedding service from scratch as a FastAPI microservice in its own Docker container; Express backend calls it over HTTP, keeping the ML runtime fully isolated from the API layer
Queries are embedded at request time and ranked by cosine similarity inside ChromaDB

Auction Engine

GitHub

TypeScript, Node.js, Redis

Real-time bidding and order matching platform using Redis for atomic concurrency — handles simultaneous bids without race conditions
Planned migration to Go to explore channels, goroutines, and locking primitives at the systems level

ChunkedWisdom

Live

Next.js, Supabase, Vercel

RLM-style recursive inference pipeline over 590 Bhagavad Gita verses — treats the text corpus as an external environment and recursively prompts the LLM over verse-level snippets
Answers long-context queries beyond single-pass limits with chapter- and theme-aware multilingual retrieval

GetyouPlaced

Live GitHub

Next.js, Supabase, Vercel

Platform for mass cold-email outreach to newly funded startups' CEOs and CTOs
Cut query time on a 70k-entry founder table by adding targeted indexes on join and filter columns

Expensify

GitHub

Expo, React Native, TypeScript, Node.js, PostgreSQL, Prisma, AWS S3, Docker

Full-stack cross-platform expense management app with Expo SDK 54 and a Dockerized Node.js/Express backend, featuring JWT auth, group-based expense tracking with role-based access
Real-time sync via Ably WebSockets across all connected clients

CodeDarshan

Demo

Browser Extension, React, TypeScript · 30 active users

Browser extension providing hints and visualizations for tracing program execution and debugging with 80% accuracy
Won Most Voted Award at Makeathon5 with 15K+ impressions on Twitter

Valhalla (OpenStreetMap Routing Engine) — Implemented real-time API warning notifications using Sonner toasts across route, isochrone, and optimized route endpoints — solving a long-standing UX gap that a prior GSoC attempt had failed to address

Valhalla (OpenStreetMap Routing Engine) — Added multilingual map label support with language persistence via localStorage, enabling English/German/local script switching across multiple tile providers

Autumn (YC F24) — Added dashboard CTA with APIs, boosting engagement by 50%

Mail.Zero (YC 25) — Eliminated 100% of redundant API calls, reducing backend load

Bifrost (Maxim AI) — Added UI configuration for vector and log storage backends

Klavis AI — Built a Google Analytics MCP server integration

Three Flags and a Race — building a webhook-driven convergence engine on top of an eventually-consistent third-party commerce API

Sharding a Pre-Order Engine — why one big selling-plan group doesn't work, and the webhook echo race that reordered every write

Counters, Not Logs — likes and comments at live-stream scale: one atomic in-memory increment instead of a per-like write, and a lock-free interaction layer where every count comes from the write that produced it

Languages: JavaScript / TypeScript, C++, SQL
Frameworks & Tools: Next.js, React.js, Expo, Node.js, Express.js, Prisma, Prometheus, Grafana
Databases: PostgreSQL, MongoDB, Redis, Firebase, ChromaDB
Cloud & DevOps: AWS, Docker, Kubernetes

Thapar University, Patiala 2022 – 2026

B.Tech in Electronics and Computer Science