React Developer

About the job

What You’ll Do • Build and maintain scalable, reusable React components • Develop dynamic, embeddable widgets (chat widgets, AI assistants, audio players, etc.) that work seamlessly across platforms. (Prior Experience is a Must) • Integrate with backend services (APIs, real-time systems) to power rich, interactive experiences • Optimize performance, responsiveness, and accessibility across devices • Collaborate closely with product, design, and backend teams • Contribute to code reviews, documentation, and frontend architecture decisions Tech Stack You’ll Work With • React + TypeScript • Redux / RTK Query for state & data fetching • React Router for navigation • Radix UI for accessible component primitives • Vite for fast builds and dev experience Why Keum? • Massive impact → Shape the frontend experience of a global AI platform • Build for the world → Your work will power businesses across industries and geographies • Learn every day → Work on real-time systems, embeddable experiences, and cutting-edge AI interfaces • No politics, just builders → Small, focused team where your work truly matters • Career growth → Eligibility for generous stock options after Year 1 • Weekly shipping → Fast execution, constant learning, and visible progress What We’re Looking For • 4+ years of professional experience with React • Strong proficiency in TypeScript, JavaScript (ES6+), HTML, and CSS • Hands-on experience with Redux / RTK Query, React Router, and modern frontend tooling (Vite preferred) • Experience building embeddable UI components or widgets is a MUST (e.g., chat widgets, SDKs, audio/video players, or similar) • Strong understanding of performance optimization and responsive design • Familiarity with API integration (REST/GraphQL) and async data handling • Experience with Git and modern development workflows • Strong communication skills and a builder mindset