Product Engineer (React)

ABOUT ROX Rox is building the AI-native revenue operating system for modern go-to-market teams. Backed by Sequoia, GV, and General Catalyst, we’re working with some of the most ambitious enterprise teams to replace fragmented CRM workflows with intelligent, autonomous systems. Rox connects data across the GTM stack, deploys AI agents to do real work, and gives revenue leaders a clear, shared picture of what actually drives outcomes. We’re a small, fast-moving Series A team taking on one of software’s most entrenched categories — and we’re winning by combining deep technical rigor with obsessive focus on usefulness. ABOUT THE ENGINEERING TEAM Engineering at Rox is product-first and execution-driven. We build real systems used daily by revenue teams operating at scale, which means every architectural decision — frontend, middle-tier, or backend — has direct customer impact. Product Engineers at Rox are not siloed. While roles have clear areas of strength, engineers are expected to understand how the entire system fits together: how UI state maps to APIs, how frontend decisions affect backend load, and how product experiences scale as customers grow. ABOUT THE ROLE This is a Product Engineer role for someone who is truly expert in React and deeply opinionated about frontend quality, architecture, and user experience. You will own large portions of the product surface area — building complex React interfaces, shaping frontend architecture, and implementing the middle-tier logic that connects UI experiences to backend systems. While this is not a backend-heavy role, you are expected to understand backend design, integration patterns, and scalability tradeoffs well enough to build clean, durable systems end-to-end. If React isn’t your strongest skill, this role is not a fit. WHAT YOU’LL DO - Build and evolve complex, production-grade user interfaces using React as the primary framework - Own frontend architecture decisions including component design, state management, data flow, and performance - Implement middle-tier logic that connects frontend experiences to backend services and data systems - Collaborate closely with backend and platform engineers to design clean APIs, integrations, and system boundaries - Participate in technical design discussions spanning frontend architecture, backend integration, and scalability - Ship end-to-end product features with a high bar for quality, clarity, and maintainability WHAT SUCCESS LOOKS LIKE - In your first few weeks: You’re productive in the codebase and contributing meaningfully to frontend features - Within a few months: You own major areas of the UI and influence frontend architecture decisions - Over time: You raise the bar for frontend quality while helping the team build systems that scale cleanly across the stack MUST-HAVE SKILLS - Expert-level experience with React - Deep understanding of component architecture, hooks, state management, rendering behavior, and performance - Experience building and maintaining large, production React applications - Strong frontend engineering fundamentals - UI architecture, client-side data flow, performance optimization, and browser behavior - High bar for code quality, maintainability, and user experience - Solid middle-tier and backend awareness - Comfort implementing business logic and API orchestration layers - Working understanding of backend system design, data models, and integration patterns - Ability to reason about scalability, reliability, and system tradeoffs - Experience with Next.js and/or TypeScript in production environments (strongly preferred) WHY THIS ROLE EXISTS Rox’s product is only as good as the systems behind it — and the frontend is where customers feel that quality first. This role exists to ensure we have engineers who can own that experience end-to-end: from React architecture to backend integration, without sacrificing performance, clarity, or scalability. If you want to build real product, operate with high ownership