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SignalFire

Founding Front-End Software Engineer (Senior/Staff) - VC Backed Startups

SignalFire, San Francisco, California, United States, 94199

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Join SignalFire’s Talent Network for Founding Front-End Engineer Roles at VC-Backed Startups At

SignalFire , we partner with

top early-stage startups

that are shaping the future of technology. Our portfolio spans 200+ innovative companies across AI, cybersecurity, healthtech, fintech, developer tools, and enterprise SaaS.

We’re looking to connect with exceptional

Founding Front-End Engineers

who are excited about building and scaling user-centr­ic applications at early-stage startups. By joining SignalFire’s Talent Network, your profile will be shared with our portfolio companies, giving you visibility into exclusive early-stage opportunities that may not be publicly listed.

This is not an application for a specific job. Instead, this is a way to get on the radar of VC-backed startups that are actively hiring AI/ML talent. If you have any questions, please direct inquiries to talentnetwork@signalfire.com.

Who Should Join? We’re looking for engineers who are:

Passionate about building exceptional user experiences and modern web applications

Excited about joining early-stage startups and working directly with founders

Interested in shaping front-end architecture, performance, and design systems

Typical Roles & Responsibilities

Design and develop scalable, high-performance front-end applications

Build intuitive, responsive, and visually engaging UI/UX experiences

Optimize front-end performance, accessibility, and responsiveness

Collaborate with product designers, backend engineers, and founders to align on vision and execution

Develop component libraries and reusable front-end architecture for scalable applications

Implement and maintain state management, API integrations, and client-side logic

Define best practices for front-end development, code quality, and UI testing

Common Qualifications While each startup has its own hiring criteria, many founding front-end engineering roles in our network look for:

3+ years of experience in front-end development, with a strong track record of shipping user-facing products

Expertise in modern JavaScript frameworks (React, Vue.js, Angular, Svelte)

Strong proficiency in HTML, CSS, TypeScript, and JavaScript (ES6+)

Experience integrating with RESTful APIs, GraphQL, and WebSockets

Knowledge of state management libraries (Redux, Zustand, Recoil, Vuex)

Familiarity with server-side rendering (Next.js, Nuxt.js) and static site generation

Strong understanding of web performance optimization, accessibility (a11y), and security best practices

Proficiency with version control (Git), CI/CD workflows, and front-end testing frameworks (Jest, Cypress, Playwright)

Experience working in early-stage startup environments or small, fast-moving teams is a plus

Technologies You Might Work With

Languages & Frameworks: JavaScript (ES6+), TypeScript, React, Vue.js, Angular, Svelte, Next.js, Nuxt.js

Styling & UI: CSS, SCSS, Tailwind CSS, Styled Components, Material UI, Chakra UI

State Management: Redux, Zustand, Recoil, Vuex, MobX

APIs & Data Handling: REST APIs, GraphQL, WebSockets, Firebase, Apollo Client

Tooling & Performance: Vite, Webpack, Babel, ESLint, Prettier, Lighthouse

Testing & Deployment: Jest, Cypress, Playwright, Storybook, GitHub Actions, Netlify, Vercel

Cloud & DevOps: AWS Amplify, Firebase, GCP, Docker, Kubernetes

What Happens Next?

Submit your application to join SignalFire’s Talent Ecosystem.

We review applications on an ongoing basis to identify strong candidates.

If there’s a match, a SignalFire talent partner or a leader from one of our startups may reach out directly.

No match yet? We’ll keep your profile on file for future front-end engineering roles in our portfolio.

Compensation Range: $170K - $250K

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