Available · Full-time / ContractChennai, India · open to relocation & remote

Senior React engineer
shipping enterprise software
that ships.

I'm Mohamed Idris - 7.5 years building high-traffic, well-tested production apps. Currently leading frontend on the FreeWheel ad platform at Comcast. Previously Cognizant, Verizon, and the Walgreens vaccine booking app used by millions.

See selected work →Hire me →

Experience

0.0yrs

Test coverage

~0%

Perf uplift

Apps shipped

01About

I build scalable, production-grade web applications that hold up under real enterprise load — architected for performance, tested for confidence, and designed to outlive their authors.

At Comcast I lead React architecture for FreeWheel MRM, a mission-critical ad-management platform. Previously at Cognizant I drove a 60% performance uplift for Verizon and led the Walgreens vaccination booking app used by millions — with 100% CDC compliance and full WCAG accessibility.

Beyond code, I mentor engineers, run knowledge-transfer sessions, and champion clean, well-tested code as a team culture.

“Recognised with the Spotlight Award at Comcast for technical excellence and delivery impact — Q2 2025.”

Open to relocationSpotlight Award 2025~90% test coverageB.Sc Computer Science

02Stack

Core	React.jsTypeScriptReduxGraphQLReact HooksContext API
Frontend	JavaScript ES6+HTML5 / CSS3BootstrapAxiosNext.js
Backend / data	Node.jsGoMongoDBMySQLREST APIsPHP
Testing / DevOps	PlaywrightJestVitestReact Testing LibraryCI/CDGit

03Experience

Sep 2024 — Present

Current role

Senior Frontend Developer

ComcastChennai, India

Led development of scalable SPAs using React, Hooks, Redux & TypeScript for the FreeWheel MRM ad-tech platform.
Mentored engineers on component architecture and state management.
Introduced Playwright-based automation achieving ~90% test coverage with AI-assisted acceleration.

Spotlight Award · Q2 2025 · Technical Excellence & Delivery Impact

Dec 2021 — Sep 2024

Software Developer

CognizantChennai, India

Built enterprise React SPAs driving a 30% lift in user engagement through improved UI architecture.
Integrated REST APIs — reduced data retrieval time by 60%, PageSpeed above 80.
Led the Walgreens vaccine booking app — 100% CDC compliance, full WCAG accessibility, +30% appointment bookings.

Jan 2021 — Dec 2021

Web Development Engineer

CodeCraft TechnologiesBangalore, India

Engineered React + Redux UI components — 25% application speed increase.
Implemented GraphQL on IGoalZero for a 25% system performance boost.

Aug 2018 — Dec 2020

Web Developer

Zinavo TechnologiesBangalore, India

Built 15+ web applications and 6 e-commerce platforms — 40% growth in online transactions.
Managed projects end-to-end with 95% client approval and 100% on-time delivery.

04Selected work