Attamjot Singh

Front-end engineering leader with 13+ years building high-traffic e-commerce, fintech and enterprise web applications at Adidas, PayU, Fidelity International, Nagarro and TCS. Leads 12 engineers across 3 squads and drove Adidas's move to a micro-frontend architecture with Webpack Module Federation, enabling independent releases. Delivered a 60% e-commerce performance gain, 40% fewer redundant API calls and 70% faster merchant onboarding.

Applies spec-driven, AI-assisted development with GitHub Spec Kit and GitHub Copilot, including a config-driven product creation journey, and led a WCAG accessibility audit that raised the Lighthouse accessibility score from 72 to 96. Expert in React, TypeScript, GraphQL, performance optimisation and front-end system design.

Senior Front-End Engineering Manager at Adidas (2022-12 – Present)

• Lead a team of 12 front-end engineers across 3 squads; mentored 6 engineers, 3 of whom were promoted, and improved release frequency from 2 to 8 per month.
• Led the strategic decision to adopt a micro-frontend architecture, then drove the migration with Webpack Module Federation so 5 cross-functional squads could build, test and release 6 applications independently.
• Raised e-commerce site performance by 60% through React and TypeScript optimisations, guided by Google Lighthouse, Instana and Chrome DevTools profiling, cutting initial page-load latency.
• Cut redundant API calls by 40% by introducing GraphQL with Apollo Client and TanStack Query for normalised caching and client/server data synchronisation.
• Led a WCAG accessibility audit of the product listing, product detail and checkout pages, fixing 140+ issues and raising the Lighthouse accessibility score from 72 to 96.
• Built shared, typed React component libraries adopted by teams across global markets, reducing runtime errors and duplicated UI work.
• Drove adoption of AI-assisted development (GitHub Copilot, agentic workflows) across the team, reducing time spent on unit tests and boilerplate code by about 30%.

Senior Front-End Engineer at PayU (2021-06 – 2022-12)

• Reduced merchant onboarding time by 70% by integrating Karza APIs for automated digital KYC verification.
• Built Google and Flipkart social sign-in for merchant registration, simplifying onboarding.
• Designed returning-user journeys that shortened the path back into the product for repeat merchants.
• Introduced Jest and React Testing Library suites for unit and component coverage, reducing regression risk in production releases.

Senior Front-End Engineer at Nagarro (2020-06 – 2021-06)

• Architected digital-wallet payment flows for peer-to-peer and merchant transactions.
• Delivered English, Arabic and Kurdish localisation with react-i18next, Material UI and jss-rtl for right-to-left layouts, lifting user engagement by 40%.
• Found and fixed memory leaks using Chrome DevTools memory profiling, improving memory footprint and rendering performance.

Front-End Engineer at Fidelity International (2017-04 – 2020-04)

• Built secure, high-availability financial dashboards and interactive prototypes with React.js, Redux, Backbone.js and Marionette.js.
• Improved web performance by 30% by auditing legacy modules and resolving bottlenecks found with Google Lighthouse.

UI Engineer at Tata Consultancy Services (2013-06 – 2017-03)

• Developed responsive, cross-browser web interfaces and interactive prototypes for global enterprise clients using HTML5, CSS3 and Bootstrap.

Master of Computer Applications (MCA) – SASTRA University (2013 – 2016)

Bachelor of Computer Applications (BCA) – IITM (2009 – 2012)