Personal details
Devon L.
Based in: 🇺🇸 United States
Timezone: Pacific Time (US & Canada) (UTC-7)
Technical skills
Top 3 skills
About
Full-Stack Engineer with 8 years of progressive experience building scalable, accessible React and TypeScript applications, from consulting analytics dashboards to enterprise identity platforms. Delivered WCAG 2.1 AA-compliant authentication flows for 20M+ users at American Express while maintaining 100% test coverage in an Agile environment. Proficient with React 18/19, Angular, Next.js, Redux Toolkit, AWS S3, and CI/CD via Jenkins and GitHub Actions.
Work Experience
Frontend Developer
American Express | Sep 2022 - Jun 2026
Jenkins
TypeScript
React
Jest
Eslint
Redux Toolkit
- Led JavaScript-to-TypeScript migration of the React 18 authentication module alongside 2 engineers, maintaining 100% test coverage across authentication flows using Jest and React Testing Library.
- Implemented forced password reset, legacy profile creation, and OTP enforcement for 20M+ users, resolving policy compliance gaps in the React and TypeScript identity stack.
- Led Authentication Flow Design Uplift initiative with cross-functional teams, building DLS components from new Figma designs in TypeScript and increasing user retention during MFA by 11%.
- Architected scalable state management using Redux Toolkit, React Context API, and custom hooks, reducing cross-component prop drilling by 24% across the enterprise identity module.
- Deployed production code through Jenkins CI/CD pipelines across E1, E2, and E3 environments, enforcing ESLint standards.
- Resolved WCAG 2.1 violations across 8 identity flows using axe-core, achieving AA compliance within a 6-month SLA; mentored 2 junior engineers on component architecture, DLS standards, and deployment workflows.
Full-Stack Web Application Developer
Learn4Life Network | Jun 2020 - Aug 2022
PHP
SQL
CSS3
React
WCAG
JavaScript
HTML5 Games
- Developed a React-based COVID vaccination portal for 500–1,000 employees with role-based access, document upload workflows, and admin review dashboards.
- Built reusable multi-step form and UI components in React with client-side validation, conditional rendering, and file upload handling, reducing invalid submissions by 38%.
- Delivered JavaScript and CSS3 customizations across 6+ Windows Power Pages sites, and integrated React frontends with PHP REST endpoints and SQL databases for real-time status updates.
- Implemented semantic HTML5 and WCAG-aligned markup, establishing accessible component patterns that reduced screen reader compatibility issues by 22%.
Projects
Beat Battle Web Application
Amazon S3
TypeScript
Next.js
Prisma
Shadcn
- Architected and shipped a full-stack Next.js 15 competition platform using TypeScript and Prisma ORM, delivering 4 core modules.
- Engineered an Amazon Web Services S3 presigned-URL audio upload pipeline with Clerk authentication, enabling direct browser-to-S3 transfers and reducing server memory overhead by 55%.
- Built reusable UI components with Shadcn, Redux Toolkit, and Tailwind CSS v4, delivering a consistent, accessible interface across voting, submission, and results flows.
AI Resume Insight Platform
2024
PostgreSQL
TypeScript
Next.js
Vercel
Anthropic
- Built a full-stack AI application integrating the Anthropic API for structured document analysis, with streaming responses, server actions, and typed API contracts end-to-end.
- Designed a PostgreSQL schema with Prisma for versioned analysis history, and deployed via Vercel with preview environments and GitHub Actions CI checks on every pull request.
Education
Boston University
Master's degree・Computer Information Systems
May 2015 - Sep 2018