Frontend Engineer

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Foxy gives creators AI superpowers to make incredible social media content — so they can create more, grow faster, and earn more. We believe creators are the most undervalued entrepreneurs on the planet, and we’re here to change that.

We’re a small but mighty team of eight, moving at breakneck speed. In just 6 months, we’ve scaled from $0 → $2M ARR and are sprinting toward $10M+ ARR within our first year of monetization — putting us among the fastest-growing consumer startups on the planet.

We’re backed by top angels and in discussions with tier-1 VCs. This is your chance to join a rocket ship right before liftoff.

What You’ll Do

  • Architect and ship frontend systems for multi-step AI workflows
  • Build real-time, scalable interfaces with streaming, visualization, and progressive loading
  • Own frontend infrastructure: component libraries, design systems, and patterns that scale to millions
  • Ruthlessly optimize performance (Core Web Vitals, render speed, memory management)
  • Ensure bulletproof accessibility (WCAG 2.1 AA, screen readers, keyboard navigation)
  • Collaborate directly with founders, designers, and AI engineers to push the frontier

What We Offer

  • Top-of-market comp, equity, and benefits
  • High ownership and zero bureaucracy — define, build, and own outcomes
  • A breakout AI opportunity with massive upside
  • A world-class team of ambitious, low-ego builders

What We’re Looking For

  • Mindset: Startup DNA: thrive in ambiguity, move fast, build from scratch
  • Systems thinker: with an eye for scale and detail
  • Ownership mentality: for the entire user journey
  • Skills (Must-Have): 6+ years building complex, user-facing apps
  • Expert in React, TypeScript, and advanced state management (Zustand or similar)
  • Deep performance engineering experience (profiling, Core Web Vitals, render optimization)
  • Accessibility at scale
  • Advanced testing (visual regression, accessibility, performance)
  • Nice-to-Have: Data visualization (D3.js, Canvas/WebGL)
  • Real-time systems (WebSockets, streaming APIs)

Our Stack

Details of the technology stack and tools used by the team.

Seniority level

  • Mid-Senior level

Employment type

  • Full-time

Job function

  • Engineering and Information Technology
  • Industries: Technology, Information and Internet

Join us and help redefine the next era of content.

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Location:
London, England, United Kingdom
Salary:
£125,000 - £150,000
Job Type:
FullTime
Category:
IT & Technology

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