Senior Frontend Developer

Senior Frontend Developer — Nova Tech Solutions

San Francisco, CA | January 2022 – Present

• Led the migration of a legacy customer portal to Next.js and TypeScript, reducing client-side bundle size by 45% and improving Core Web Vitals (LCP) by 1.8 seconds for 120,000 daily active users.
• Architected and deployed a reusable design system component library using Tailwind CSS and React, accelerating feature development velocity across 4 cross-functional teams by 28% over 6 months.
• Optimized application rendering paths and state management flows, reducing browser memory usage by 32% and resolving critical rendering performance issues for 85,000 monthly active users.
• Mentored 5 mid-level and junior developers in semantic HTML and WCAG 2.1 AA standards, establishing accessibility testing suites in Jest that decreased post-release interface bugs by 38%.

Frontend Developer — Sync Capital Systems

Oakland, CA | June 2016 – December 2021

• Developed and shipped 18 core application features for a SaaS platform using React.js and Redux, which increased user engagement by 24% and boosted new client conversions by 15%.
• Implemented comprehensive unit and integration test suites using Jest and Enzyme, raising overall frontend code coverage from 52% to 88% and reducing QA cycle duration by 4 days.
• Collaborated with backend engineers to redesign API consumption layers using GraphQL, reducing network payload sizes by 40% and cutting average browser network request time by 140ms.
• Refactored legacy CSS codebases into modular Sass modules and responsive layouts, boosting Google Lighthouse performance scores from 65 to 94 across all mobile web platforms.

JavaScript, TypeScript, React.js, Next.js, Redux, HTML5, CSS3, Sass, Tailwind CSS, GraphQL, RESTful APIs, Node.js, Webpack, Jest, Cypress, Git, CI/CD, Agile, Scrum, Web Performance, Accessibility (A11y)

Enterprise Design System Migration

Role: Lead Frontend Architect

Tools: React.js, TypeScript, Tailwind CSS, Storybook, GitHub Actions

Led the development and migration of 3 legacy platforms to a centralized design system, accelerating UI release velocity by 30% and saving $45,000 in frontend engineering overhead.

Real-Time Dashboard Optimization

Role: Senior Frontend Developer

Tools: React.js, GraphQL, WebSockets, Chart.js, Cypress

Re-engineered the client-side data streaming interface, which decreased browser rendering lag by 42% and supported 25,000 concurrent updates per second without page degradation.

• AWS Certified Developer – Associate (2024)
• Google UX Design Professional Certificate (2022)

• Languages: English (Native), Spanish (Conversational)
• Volunteer Work: Frontend advisor for community non-profit digital literacy programs (2020-present)
• Availability: 3 weeks notice