Senior Frontend Engineer: AI-Powered Design Tools

53 Stations; San Francisco (CA); On-site; USD 140,000 - 210,000; Full time

Job summary

Flux is building the world's first AI hardware engineer. We are hiring a Product Engineer, Frontend to shape the core web experience of Flux. You will work across our browser-based editor, collaboration systems, and AI-powered workflows.

This is a high-ownership product engineering role focused on building and evolving complex, interactive interfaces used for real engineering work. You’ll spend most of your time in React and TypeScript, partnering closely with design and ECAD engineers to keep a

Qualifications

• Strong command of modern React and TypeScript in sizable production codebases.
• Experience shipping and iterating on complex, interactive web applications (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 experience collaborating closely with design and product.
• Experience with browser performance profiling and debugging.

Responsibilities

• 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 early concepts through production.
• Maintain predictable and scalable UI state and data flows within a collaborative, multi-pane editor environment.
• Improve responsiveness and perceived performance as projects increase in size and 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 for owned features (usage metrics, error logging, UX dashboards).
• Participate in code reviews, design discussions, and lightweight documentation.
• Mentor other engineers on frontend best practices where appropriate.

Skills

React

TypeScript

Frontend

UI design

Performance

Startup environment

Location flexibility

Job description

Flux is building the world's first AI hardware engineer. We are hiring a Product Engineer, Frontend to shape the core web experience of Flux. You will work across our browser-based editor, collaboration systems, and AI-powered workflows.

This is a high-ownership product engineering role focused on building and evolving complex, interactive interfaces used for real engineering work. You’ll spend most of your time in React and TypeScript, partnering closely with design and ECAD engineers to keep a