---
title: 'Product Engineer, Front End at Flux'
canonical: 'https://feeny.ai/job/product-engineer-front-end-flux-san-francisco-fmjeg2vqxxb3'
type: 'job'
last_seen: '2026-09-12'
---

# Product Engineer, Front End at Flux

- **Company:** Flux
- **Location:** San Francisco, CA
- **Compensation:** $183k–$250k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-12-18
- **Last confirmed live:** 2026-09-12
- **Apply:** https://jobs.ashbyhq.com/flux/fb21b54d-baf5-4a3e-9a24-ef6479884d63

## Job description

## Why Flux

Flux is taking the hard out of hardware. To do this, we’re building the world's first AI hardware engineer. Founded in 2019, our platform enables anyone to go from idea to manufacturable board using nothing more than a natural language prompt. This democratizes a process that has historically required years of specialized expertise.

We're going after a $15B+ electronic design automation market, backed by 8VC, Bain Capital Ventures, Liquid 2 Ventures, Outsiders Fund, Figma board member John Lilly, and GitHub founder Tom Preston-Werner. In February 2026, we closed a total of $37M in funding to accelerate that mission.

What happens when we unlock the ability for anyone to make hardware? We fundamentally reshape the world. That's our mission, and we're just getting started.

## The Role

We’re 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 sophisticated, real-time application fast, intuitive, and maintainable. We are open to mid-level through senior candidates. Level, scope, and compensation will align to demonstrated experience, ownership, and the complexity of problems you can independently drive.

## 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 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.

## What You’ll Bring

- 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.
- Comfortable working across the stack to integrate APIs and make small backend changes.
- Experience in startup or high-ownership environments.
- Based in the San Francisco Bay Area or willing to relocate.

## 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 applications (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

- Impact-oriented – You care about real user value, not just shipped code.
- Comfortable with ambiguity – You thrive in evolving problem spaces.
- Collaborative – You share ideas early and welcome debate.
- Experiment-driven – You question conventions and embrace AI-native workflows.
- Ownership mentality – You bias toward action and take responsibility for outcomes.

Flux is an equal opportunity employer. We are committed to providing equal employment opportunities to all qualified individuals and do not discriminate on the basis of race, color, religion, sex (including pregnancy, gender identity, and sexual orientation), national origin, age, disability, genetic information, veteran status, or any other characteristic protected by applicable federal, state, or local law. All employment decisions are based on qualifications, merit, and business need.

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

## About Flux

## Company Overview
- **One-liner**: Flux is an AI-powered, browser-based platform for collaborative PCB design and electronic hardware development.
- **Entity Type**: Private (Series B)
- **Headquarters**: San Francisco, California, United States
- **Founded**: 2019
- **Founders**: Lance Cassidy, Matthias Wagner, Christian Blank

## Core Business
- **Primary industry/industries**: Electronic Design Automation (EDA), Hardware Design Tools, AI-assisted Engineering
- **Target customers**: Hobbyists, researchers, educators, entrepreneurs, and professional hardware engineers (B2B and B2C)
- **Mission or purpose statement**: “Take the hard out of hardware” – make atoms as malleable as bits, empowering anyone to design and manufacture physical products as easily as software.

## Products & Services
- **[Flux Platform](https://www.flux.ai/p)**: Browser-based PCB design tool featuring schematic capture, layout editing, auto-routing, multi-layer support, bill of materials generation, design rule checks, and real-time collaboration with version control.
- **[Flux Copilot](https://www.flux.ai/p)**: AI assistant integrated into the platform that helps brainstorm ideas, wire up schematics, reference datasheets, troubleshoot bugs, and automate tedious tasks.
- **[Component Library & Parts Marketplace](https://www.flux.ai/p)**: Shared, forkable library of components, reference designs, and templates with real-time pricing and availability from major suppliers.

## Market Standing
- **Valuation/Market Cap**: Not publicly disclosed (Series B, Feb 2026)
- **Key Metric**: Total funding **$49M** over 3 rounds; latest Series B closed February 27, 2026 (amount undisclosed) with participation from Outsiders Fund, Bain Capital Ventures, 8VC, and others [tracxn.com](https://tracxn.com/d/companies/flux-ai/__DgsqcxsjLsm7cUHAQiGcPjtiZwIU_vAHmJznT8TYkS8).
- **Notable Investors/Partners**: Outsiders Fund, Bain Capital Ventures, 8VC (12 institutional investors + 1 angel investor)
- **Growth Signals**: Headcount reached **120** as of May 2026 (up from ~28 on LinkedIn earlier); ranked **5th among 260 active competitors** on Tracxn; operates in 11 countries; growing global user base and active open-source community.

## Competitive Advantages
- **Browser-native, zero-install** – eliminates toolchain friction common in legacy EDA tools (e.g., Cadence, Altium).
- **AI co-pilot (Copilot)** – accelerates design iteration and lowers the barrier for non-experts.
- **Real-time collaboration & version control** – fork projects, manage permissions, and review asynchronously like software teams do on GitHub.
- **Integrated supply chain data** – live pricing/availability from major parts distributors.
- **Full-stack hardware vision** – future scope includes mechanical design, firmware, manufacturing, and distribution, creating a single ecosystem.

## Strategic Focus
- **Democratizing hardware design** – making it as easy to design a PCB as it is to build a website.
- **Expanding the toolset** beyond electronics into mechanical, firmware, and manufacturing workflows.
- **Growing the community** of contributors and leveraging AI to reduce the expertise gap.
- **Remote-first global hiring** to attract top talent without geographic constraints.

## Why Work Here
- **Fully remote company** – work from anywhere; operates across 11 countries (US, Philippines, Canada, India, New Zealand, Kenya, etc.).
- **Culture rating**: 5.0/5.0 on LinkedIn (Work-Life 5.0, Compensation 4.5, Culture 5.0, Career 4.5) from employee reviews.
- **High-impact mission**: Building the “tool for making better tools” – you directly shape how physical products are invented.
- **Engineering-led environment** with modern stack (browser, AI) and a focus on solving hard problems in hardware.
- **Transparent manifesto** and strong sense of purpose: “We need the weirdos and the rebels and the nerds.”
- **Benefits**: Not detailed but culture emphasizes autonomy, creativity, and generous collaboration.

## Sources
1. [flux.ai – About Us](https://www.flux.ai/p/about)
2. [flux.ai – The Flux Manifesto](https://www.flux.ai/p/manifesto)
3. [tracxn.com – Flux AI Company Profile](https://tracxn.com/d/companies/flux-ai/__DgsqcxsjLsm7cUHAQiGcPjtiZwIU_vAHmJznT8TYkS8)
4. [linkedin.com – Flux Company Page](https://www.linkedin.com/company/buildwithflux)
5. [jobs.ashbyhq.com – Flux Careers](https://jobs.ashbyhq.com/flux)

## Other roles at Flux

- [Engineering Manager](https://feeny.ai/job/engineering-manager-flux-san-francisco-47jr8vv5x9wz) — San Francisco, CA
- [Head of Hardware Design](https://feeny.ai/job/head-of-hardware-design-flux-san-francisco-1w1vsz32ap9w) — San Francisco, CA
- [DevOps Engineer](https://feeny.ai/job/devops-engineer-flux-san-francisco-r69wctyxrky6) — San Francisco, CA
- [Customer Support](https://feeny.ai/job/customer-support-flux-san-francisco-07c3q3dy0mgb) — San Francisco, CA
- [Customer Success Engineer](https://feeny.ai/job/customer-success-engineer-flux-san-francisco-k0k8jr2xwwp5) — San Francisco, CA
- [Growth Engineer](https://feeny.ai/job/growth-engineer-flux-san-francisco-6r7mz6kn91cz) — San Francisco, CA
- [Platform Engineer](https://feeny.ai/job/platform-engineer-flux-san-francisco-s0zz85nvxa4p) — San Francisco, CA
- [Head of Revenue](https://feeny.ai/job/head-of-revenue-flux-san-francisco-gvwdnsaf591n) — San Francisco, CA
- [Software Engineer, Agentic Products](https://feeny.ai/job/software-engineer-agentic-products-flux-san-francisco-ec5qkhh537pz) — San Francisco, CA