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

Senior React engineer
shipping enterprise software
that ships.

I'm Mohamed Idris - 8+ 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 →Download Resume ↓

8 yrs enterprise ·Comcast FreeWheel·~90% Playwright coverage·Walgreens 100% CDC/WCAG·15+ production apps

About

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

Stack

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

Experience

Sep 2024 - Present

Current role

Senior Frontend Developer

ComcastChennai, India

Architected 3 ad-forecasting & inventory modules using React, TypeScript, Redux & Go microservices.
Led a 7-person frontend pod end-to-end - sprint planning, backlog grooming, and Copilot-augmented PR review workflows.
Drove unit, component, and E2E test coverage (Jest, Vitest, Playwright) from 0% to ~90% across 40+ components.

Spotlight Award (Q2 2025) & High Five Award (Q4 2025)

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.