Product Engineer, Front End
Flux · San Francisco Office
About this role
## Product Engineer, Front End ### About Flux Flux is building the world’s first **AI hardware engineer**, helping people go from **natural language prompt → manufacturable board**. Founded in 2019, Flux is backed by investors including **8VC, Bain Capital Ventures, Liquid 2 Ventures, Outsiders Fund**, and others. ### The Role We’re hiring a **Product Engineer (Frontend)** to shape the core web experience of Flux. You’ll work across the **browser-based editor**, **collaboration systems**, and **AI-powered workflows**—building and evolving complex, interactive interfaces used for real engineering work. **Location:** Based in the **San Francisco Bay Area** or willing to relocate. ### What You’ll Do - Build and evolve core user-facing features in the Flux web app using **React** and **TypeScript** - Partner with design to refine flows and interactions from concept through production - Maintain predictable, scalable UI state and data flows in a collaborative, multi-pane editor - Improve responsiveness and perceived performance as projects grow in size/complexity - Integrate frontend systems with **APIs** and backend services; collaborate on backend changes when needed - Maintain and evolve shared component libraries and design system primitives - Add and maintain instrumentation (usage metrics, error logging, UX dashboards) - Participate in code reviews, design discussions, and lightweight documentation - Mentor other engineers on frontend best practices (as appropriate) ### What You’ll Bring - Strong command of modern **React** and **TypeScript** in sizable production codebases - Experience shipping/iterating on complex, interactive web apps (e.g., design tools, visual editors, multi-pane interfaces) - Experience building responsive UIs on top of asynchronous or computation-heavy backend systems - Strong product judgment and close collaboration with design and product - Experience with browser performance profiling and debugging - Comfortable working across the stack to integrate APIs and make small backend changes - Experience in startup or high-ownership environments ### Preferred Qualifications - Experience building distributed, collaborative, real-time applications - Experience with complex editor interfaces, CAD, developer tools, or design tools - Familiarity with state management patterns in large React apps (Redux or equivalent) - Experience with **WebWorkers**, **WebAssembly**, or background computation in the browser - Experience integrating AI-powered features into user-facing products - Experience building high-performance frontends handling large data models - Open source contributions in frontend or developer tooling ### Profile (How You Work) - **Impact-oriented**: care about real user value - **Comfortable with ambiguity**: thrive in evolving problem spaces - **Collaborative**: share ideas early and welcome debate - **Experiment-driven**: question conventions and embrace AI-native workflows - **Ownership mentality**: bias toward action and take responsibility for outcomes ### Equal Opportunity Flux is an equal opportunity employer and does not discriminate based on protected characteristics. Employment decisions are based on qualifications, merit, and business need.
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