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Frontend engineer

London
Foxy AI
Engineer
Posted: 14 September
Offer description

Get AI-powered advice on this job and more exclusive features.

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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