> Markdown version of [/jobs/ext/601839-senior-front-end-engineer](https://www.wearedevelopers.com/jobs/ext/601839-senior-front-end-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Front-End Engineer - **Company:** Tradeify LLC - **Location:** United States - **Experience:** Expert - **Salary:** $120,000.0 - $155,000.0 - **Contract:** Permanent contract - **Skills:** JavaScript (Programming Language), Computer Animation, Application Programming Interfaces (APIs), Browser Compatibility, Cascading Style Sheets (CSS), Code Review, D3.Js, Data Visualization, Design of User Interfaces, Performance Tuning, Next.js, Responsive Web Design, TypeScript, Web Content Accessibility Guidelines, Web Performance Optimization, WebSocket, Web Usability, Cypress (Programming Language), Material UI, Playwright, Build Tools, Front End Software Development, React Redux, JestJS, Restful APIs - **Published:** June 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=a498bc946c2b697a ## About the Role Do you have experience in WCAG?, As we continue scaling rapidly, technology sits at the center of everything we do. We are looking for a talented Front-End Engineer who thrives in fast-paced environments and enjoys crafting polished, high-performance interfaces that traders rely on every day., * 6+ years of experience in frontend or UI engineering * Expert-level proficiency in React and TypeScript * Strong understanding of Next.js or similar SSR/SSG frameworks * Experience building real-time or data-dense interfaces (dashboards, charts, tables) * Deep understanding of browser rendering, CSS architecture, and web performance optimization * Familiarity with state management libraries such as Zustand, Redux, or Jotai * Experience integrating WebSocket or streaming APIs on the frontend * Solid understanding of accessibility standards (WCAG) and responsive design * Ability to work independently and move quickly in a startup environment * Strong communication and collaboration skills Nice to Have * Experience within fintech, trading, crypto, or financial data products * Familiarity with charting libraries such as TradingView, D3.js, Recharts, or ECharts * Exposure to real-time market data feeds or order book visualizations * Experience building or maintaining design systems and component libraries * Knowledge of animation and micro-interaction libraries (Framer Motion, GSAP) * Familiarity with testing frameworks such as Vitest, Jest, Playwright, or Cypress * Experience with AI-assisted development workflows and engineering automation ## Description You will work closely with Product, Design, Data, and Engineering teams to deliver experiences that directly impact traders globally. This is a hands-on role based out of our Boca Raton, FL office., * Translate designs into pixel-accurate, accessible, and performant UI components * Develop and maintain a scalable design system and component library * Implement real-time dashboards, data visualizations, and trading-related interfaces * Optimize for Core Web Vitals, rendering performance, and cross-browser compatibility, * Integrate with REST APIs and WebSocket streams for real-time market data * Build efficient data-fetching layers with caching, polling, and streaming support * Handle high-frequency UI updates with minimal performance overhead Engineering & Collaboration * Partner with Design to refine UX flows and maintain consistency across the product * Write clean, well-tested, and maintainable component code * Contribute to frontend tooling, build systems, and CI/CD pipelines * Participate in code reviews and help define frontend engineering standards * Troubleshoot performance and rendering issues in production ## Related Videos - [GraphQL + Apollo + Next.js: A Lovely Trio](https://www.wearedevelopers.com/videos/311-graphql-apollo-next-js-a-lovely-trio) - [But, you're not Facebook](https://www.wearedevelopers.com/videos/378-but-you-re-not-facebook) - [Web-based Information Visualization](https://www.wearedevelopers.com/videos/84-web-based-information-visualization) - [WeAreDevelopers LIVE – Frontend Inspirations, Web Standards and more](https://www.wearedevelopers.com/videos/1761-wearedevelopers-live-frontend-inspirations-web-standards-and-more) - [From Zero to Hero: NextJS 13 and Tailwind CSS for Beginners](https://www.wearedevelopers.com/videos/766-from-zero-to-hero-nextjs-13-and-tailwind-css-for-beginners) - [Microfrontends at Scale](https://www.wearedevelopers.com/videos/236-microfrontends-at-scale) ## Related Articles - [16 Best Free React UI Libraries in 2025](https://www.wearedevelopers.com/magazine/148-16-best-free-react-ui-libraries-in-2025) - [The Best 7 Frontend Frameworks for Developers in 2025](https://www.wearedevelopers.com/magazine/400-the-best-7-frontend-frameworks-for-developers-in-2025) - [React Developer Salary [2023]](https://www.wearedevelopers.com/magazine/198-react-developer-salary-2023) - [25 Essential Tools for Front End Developers](https://www.wearedevelopers.com/magazine/210-25-essential-tools-for-front-end-developers) - [The Fastest JavaScript Charts - Built for React and Beyond](https://www.wearedevelopers.com/magazine/636-the-fastest-javascript-charts-built-for-react-and-beyond) - [Dev Digest 133 - Back to Front](https://www.wearedevelopers.com/magazine/474-dev-digest-133-back-to-front)