(555) 017-4829

San Jose, CA

Elena Rostova

Frontend Developer

Performance-focused Frontend Developer with 5+ years of experience designing, architecting, and shipping high-scale, accessible web applications. Expert in TypeScript, React, Next.js, and modern CSS architectures, with a proven track record of optimizing Core Web Vitals to 95+, cutting client bundle sizes by 40%, and building accessible, multi-device component design systems used by cross-functional engineering teams.

Projects

ComponentLab – Accessible Open-Source UI Library

Jan 2022 - Present

Created a lightweight, accessible UI component kit using TypeScript, Radix UI primitives, and Tailwind CSS. Implemented keyboard-first navigation patterns, ARIA live regions, and automated axe-core accessibility checks. Integrated Storybook documentation and automated chromatic visual regression testing in GitHub Actions CI.

StreamView – Real-Time Financial Data Dashboard

Jan 2022 - Present

Developed a responsive financial market dashboard using Next.js (App Router), Zustand, and TradingView charting libraries. Handled high-frequency WebSocket streams, implementing canvas-based rendering for live ticker updates with sub-millisecond redraws.

Work experience

Senior Frontend Developer

May 2022 - Present

Lumina Interactive

• San Francisco, CA

Architected a customer-facing enterprise analytics dashboard using React, Next.js, and TypeScript, scaling the platform to handle 2.8M monthly active users. Engineered responsive multi-device design system cutting cross-browser rendering bugs by 42% across mobile and desktop environments. Optimized critical rendering path and refactored client bundles using dynamic imports and tree shaking, elevating Lighthouse performance scores from 64 to 98 and cutting First Contentful Paint (FCP) by 55%. Migrated legacy REST API consumption to TanStack Query and WebSockets, establishing optimistic UI updates and real-time data streaming that increased user engagement by 26%. Integrated comprehensive automated end-to-end and unit testing pipelines using Playwright and Vitest, scaling test coverage from 48% to 91% across all core checkout paths. Audited and remediated front-end accessibility barriers against WCAG 2.1 AA standards, achieving 100% compliance across all navigation patterns and forms.

Frontend Developer

Aug 2019 - Apr 2022

PulsePoint Digital

• Oakland, CA

Built high-converting responsive web interfaces for multiple client projects utilizing React, Redux Toolkit, and Tailwind CSS. Partnered closely with UI/UX designers to translate Figma design systems into reusable, documented Storybook component libraries, reducing frontend sprint delivery time by 30%. Built performant server-side rendered (SSR) e-commerce product pages in Next.js, driving organic search visibility and increasing mobile conversion rates by 19%. Designed client-side form validation engines using Zod and React Hook Form, eliminating duplicate submissions and dropping user input error rates by 35%. Collaborated in an Agile Scrum squad of 10 engineers, participating in bi-weekly sprints, architectural RFC reviews, and active peer pull request reviews.

Skills

JavaScript (ES6+)TypeScriptReactNext.jsHTML5/CSS3Tailwind CSSVue.jsRedux Toolkit / ZustandJest / Playwright / VitestGraphQL / REST APIs

Education

Bachelor of Science in Computer Science

Jan 2015 - Dec 2019

San Jose State University

Certifications

Meta Front-End Developer Professional Certificate

Jan, 2022

W3Cx: Front-End Web Developer Professional Certificate

Jan, 2020

W3Cx