Rachit Kr. Singh

Front-End Engineer III

Founding frontend engineer on Amazon Now. Built its end-to-end shopping experience, then helped turn it into a shared frontend platform for teams across marketplaces.

• Architecture for speed: state split by feature, code loaded on demand, optimistic updates.
• Reusable components, design foundations, theming and localisation for different brands, languages and markets.
• A path from one large frontend app to smaller, independently deployable parts.
• A research-backed way to assess how reliable, immediate and smooth interactions feel, connected to production measurement.
• Guidance, automated code checks, runbooks and workflows for AI-assisted development.
• Earlier in the role: Amazon in-store checkout software — payment reliability, customer recognition, receipts, multi-brand theming, modular point-of-sale architecture.

Front End Engineer II

Core frontend features for a major Amazon shopping experience, and the frontend of a cloud security product built from the ground up.

• Features to combine related products, explore options and see prices update as customers choose.
• Defined the customer experience and frontend architecture of a new cloud security product.

Web Development Engineer II

Reusable frontend features for retail product pages, a new product page, and a JavaScript library for consistent card layouts.

Web Development Engineer

Mobile marketing and customer engagement: an SMS campaign flow, Amazon Pay in a sweepstakes experience, and shoppable content.

UI Engineer II

Consumer-facing e-commerce UI with React and Redux for the desktop single-page app and the mobile website.

Front End Engineer

Frontend for a price-comparison shopping site.