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Himanshu Chhabra

@himanshuchhabra

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Fullstack engineer driven by first principles and boosted by context engineering.

India

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At Quillbot, I built and shipped paid features for a Chrome extension, and designed a Redis caching layer for LLM inference requests that raised the cache-hit ratio to about 35% and cut model spend by about 70%.

At Razorpay, I co-architected and launched gift cards as a payment method in Razorpay Checkout, handling idempotency and failure reconciliation. I’ve also built REST APIs for bulk order processing, B2B dashboards, and a warehouse management system UI with real-time visualizations.

Experience

Work history, roles, and key accomplishments

Software Engineer II

Quillbot

Sep 2025 - Sep 2026 (1 year)

Built and shipped paid features for a Chrome extension with 5M+ users and 100K DAU. Designed a caching layer for LLM inference requests, raising cache-hit ratio to ~35% and cutting model spend by ~70%.

Express TypeScript React Redis REST APIs WebSockets Playwright

Product Development Engineer II

Razorpay

Jul 2024 - Aug 2025 (1 year 1 month)

Co-architected and launched gift cards as a payment method in Razorpay Checkout, handling idempotency and failure reconciliation. Built REST APIs for bulk order processing using Kafka for asynchronous processing and report generation.

Go TypeScript React Svelte Docker Kubernetes Redis REST APIs PostgreSQL Playwright

Software Engineer II

Zeta

Aug 2021 - Aug 2022 (1 year)

Implemented dashboards for B2B consumers as a foundation for offers and promotions. Built Offers REST APIs used by web and mobile apps, onboarding 3+ clients with an estimated Rs.6 Cr+ GMV in food coupons.

TypeScript NodeJS ExpressJS Vue.Js Jenkins CI CD Web Components

Frontend Engineer

Rapyuta Robotics

Aug 2019 - Aug 2021 (2 years)

Bootstrapped the warehouse management system UI dashboard with canvas-based ROS-powered realtime visualizations using websockets. Involved in candidate hiring and mentoring newly onboarded engineers.

React ThreeJS Docker Kubernetes WebSockets Linux