Chrisbion Silas Ebenezer Samuel
Software Engineer
San Jose,CA
Summary
Senior Software Engineer specializing in frontend architecture and platform design, with 15+ years of experience building scalable, high-performance web systems serving millions of users. Expertise in React, TypeScript, SSR, schema-driven UI frameworks, GraphQL integrations, AI-enabled workflows, and CI/CD automation. Proven track record of modernizing large-scale frontend ecosystems, driving cross-functional alignment, and delivering measurable performance and accessibility improvements across complex enterprise environments.
Overview
15
15
years of professional experience
Work History
MTS 1 (Senior Frontend Engineer)
eBay Inc.
San Jose, CA
06.2022 - Current
- Led frontend architecture, accessibility compliance, and performance modernization across SEO Navigation and Browse systems serving millions of users.
- Architected Nexus Playground, an AI-driven, schema-based SSR component platform in TypeScript, enabling reusable, WCAG 2.1 AA-compliant UI systems across multi-repo environments.
- Migrated legacy modules to a unified schema-driven architecture, reducing frontend duplication by ~40% and embedding automated accessibility validation in CI (axe-core, Jest, Cypress).
- Partnered with AI/ML teams to integrate model outputs into frontend workflows, accelerating iteration and validation cycles by ~85%.
- Optimized image delivery (adaptive WebP/JPEG), reducing payload by up to 9.8MB and improving LCP by ~300ms.
- Modernized CI/CD pipelines (Jenkins → VIP CI), reducing build failures by >50% and improving deployment reliability.
- Tech Stack: React, MarkoJS, TypeScript, SSR, GraphQL, schema-driven UI systems, Node.js, REST APIs, Vite, Webpack, Jenkins/VIP CI, Web performance optimization.
Senior Frontend Developer (Apple Online Store Client)
Infosys Limited
Sunnyvale, CA
08.2020 - 06.2022
- Served as frontend technical lead for enterprise-scale initiatives supporting Apple Online Store platforms, delivering accessibility-first React solutions.
- Architected complex checkout enhancements (split payments, loyalty redemption, regional integrations including Alipay and WeChat) with full WCAG 2.1 AA compliance and keyboard/assistive technology support.
- Led redesign of the Online Self Service platform using a data-driven, API-powered UI architecture with semantic HTML, ARIA live regions, and accessible error-state handling.
- Established frontend standards including accessibility enforcement (eslint-plugin-jsx-a11y), CI-based validation, and scalable component architecture guidelines.
- Collaborated cross-functionally with product, backend, and design teams to deliver high-impact, pixel-accurate, accessible production releases.
- Tech Stack: React, TypeScript, JavaScript (ES6+), REST APIs, Cypress, Jenkins CI/CD, modular component architecture.
Software Engineer
StubHub Inc.
San Francisco, CA
07.2019 - 05.2020
- Owned frontend architecture decisions for marketplace features impacting 1M+ daily users and $5B+ annual revenue, maintaining accessibility across core purchase and seller workflows.
- Developed high-volume React/Redux applications with emphasis on accessible state transitions, focus restoration, and screen-reader-friendly dynamic updates.
- Led a team of 6 engineers to enhance the seller experience across core platform workflows, ensuring keyboard operability and consistent accessible interaction patterns.
- Integrated automated accessibility validation into CI workflows to prevent regressions and improve UI quality.
- Collaborated cross-functionally with product and design to deliver roadmap initiatives with scalable, accessible UI implementations.
- Tech Stack: React, Redux, JavaScript (ES6+), SCSS, Jest, Cypress, Jenkins CI integration.
Frontend Developer
Infosys Limited
Sunnyvale, CA
09.2016 - 07.2019
- Developed responsive, accessibility-compliant UI components using React, semantic HTML5, JavaScript (ES6+), and SCSS, with ARIA best practices and keyboard support.
- Translated business and UX requirements into pixel-perfect, keyboard-operable frontend implementations across multiple enterprise modules.
- Integrated RESTful APIs and optimized client-side performance for high-traffic user workflows while preserving accessible interaction patterns.
- Collaborated closely with onsite and offshore teams to ensure timely feature delivery and consistent accessibility quality.
- Contributed to test automation using Cypress and supported release cycles through CI workflows.
- Tech Stack: React, JavaScript (ES6+), HTML5, SCSS, RESTful APIs, Cypress, CI workflows.
Technology Analyst
Infosys Limited
Bangalore
02.2011 - 09.2016
- Gathered requirements and translated business needs into scalable, accessibility-aware frontend solutions.
- Implemented enterprise-grade applications using semantic HTML5, CSS3, and JavaScript with attention to accessible patterns and cross-browser compatibility.
- Conducted unit and integration testing, and supported post-release production issues with a focus on UI correctness and usability.
- Tech Stack: HTML5, CSS3, JavaScript, enterprise web application development, unit and integration.
Education
Bachelors Degree - Computer Engineering
Anna University
Skills
- Frontend Architecture & System Design
- High-Performance Web Applications
- CI/CD Pipeline Design & Automation
- SEO Optimization & Core Web Vitals
- Component Libraries & Design Systems
- Server-Side Rendering (SSR) & Island Architecture
- Micro-Frontend Patterns
- DevOps Collaboration & Deployment Strategy
- Cross-Functional Technical Leadership
- Scalable UI Engineering
- React
- MarkoJS
- TypeScript
- JavaScript (ES6)
- Redux
- HTML5
- CSS3
- SCSS
- LESS
- Storybook
- Vite
- Webpack
- Gulp
- Jenkins
- GitHub Actions
- Jest
- Cypress
- Vitest
- Puppeteer
- Playwright
- Nodejs
- REST APIs
- JSON
- CI/CD Pipelines
- Git
- SVN
- Figma
- Abstract
- Quip
- Box
Websites
Core Expertise
- Frontend Architecture & System Design
- High-Performance Web Applications
- CI/CD Pipeline Design & Automation
- SEO Optimization & Core Web Vitals
- Component Libraries & Design Systems
- Server-Side Rendering (SSR) & Island Architecture
- Micro-Frontend Patterns
- DevOps Collaboration & Deployment Strategy
- Cross-Functional Technical Leadership
- Scalable UI Engineering
Technical Stack
React, MarkoJS, TypeScript, JavaScript (ES6+), Redux, HTML5, CSS3, SCSS, LESS, Storybook, Vite, Webpack, Gulp, Jenkins, GitHub Actions, Jest, Cypress, Vitest, Puppeteer, Playwright, Node.js, REST APIs, JSON, CI/CD Pipelines, Jenkins, Git, SVN, Figma, Abstract, Quip, Box
Work Preference
Work Type
Full TimeLocation Preference
On-SiteRemoteHybridPersonal Information
I’m a Senior Software Engineer specializing in frontend architecture and scalable web platforms, with over 15 years of experience building high-performance applications for companies like eBay, Apple (via Infosys), and StubHub. My expertise includes React, TypeScript, server-side rendering, accessibility (WCAG 2.1), and performance optimization for large-scale user platforms serving millions of users. I enjoy solving complex UI and platform challenges, improving developer workflows, and delivering reliable, accessible user experiences. I’m currently based in San Jose, California and open to opportunities where I can contribute to building scalable, high-quality frontend systems.
Timeline
MTS 1 (Senior Frontend Engineer)
eBay Inc.
06.2022 - Current
Senior Frontend Developer (Apple Online Store Client)
Infosys Limited
08.2020 - 06.2022
Software Engineer
StubHub Inc.
07.2019 - 05.2020
Frontend Developer
Infosys Limited
09.2016 - 07.2019
Technology Analyst
Infosys Limited
02.2011 - 09.2016
Bachelors Degree - Computer Engineering
Anna University