Senior React Engineer (Next.js)

We’re a high-growth fintech startup building products for the financial markets, and we’re looking for a senior Senior React Engineer (Next.js) to own our most critical frontend experiences. You’ll partner closely with product and design to ship intuitive, high-performance interfaces, and help us scale to millions of users. What you’ll do: Design, build, and ship high-performance, responsive web UIs Partner with product managers, designers, and analysts to translate user needs into elegant product experiences Plan and execute short- and long-term roadmaps balancing user impact, technical quality, and delivery speed Raise the bar through code reviews, mentoring, and improvements to our tooling and processes Requirements: Must-have expertise: Next.js (our web app is built with Next.js) Monorepos using Yarn Workspaces or Nx Tailwind CSS (our primary design system) Technical requirements: 5+ years of professional software development experience 5+ years with React and its ecosystem (e.g., Redux, React Router) Strong proficiency in JavaScript (ES6/ES7) and TypeScript Deep knowledge of HTML/CSS, responsive design, and accessibility (a11y) best practices Hands-on with modern build tooling and package managers (Vite, esbuild, Yarn) Experience with server-side rendering and Next.js, plus working knowledge of Node.js Comfortable with Git workflows and agile methodologies 3+ years working with major cloud providers (AWS/GCP/Azure) Storybook Nice to have: Experience with monorepo release management and internal package versioning Familiarity with performance profiling, Web Vitals, and SEO in Next.js E2E testing (Playwright/Cypress) and CI/CD pipelines Experience in fintech or data-heavy, real-time UIs