JavaScript Engineer (React/TypeScript) - Growth Engineering
Added: 17/06/2025 Fyxer AI
London, England, United Kingdom
🕒 Full-time
💷 £70–90k + equity
🏷️ react
🏷️ javascript
🏷️ typescript
🏷️ tailwind
🏷️ css
🏷️ cloud
🏷️ google cloud
🏷️ firebase
🏷️ ci/cd
🏷️ github actions
🏷️ openai
🏷️ python
Job description Join the Growth Engineering team at Fyxer AI, a rapidly growing AI startup building a productivity tool to eliminate email admin. You will play a key role in driving user growth through experimentation, data analysis, and collaboration.
Responsibilities
- Own the full lifecycle of growth experiments (idea to analysis).
- Identify growth opportunities across the product and site.
- Build conversion flows, virality loops, and onboarding UX.
- Analyze experiments using Posthog, BigQuery, and Metabase.
- Collaborate with design, product, and GTM teams.
Requirements
- 2+ years of engineering experience (preferably in a startup).
- Deep knowledge of JavaScript, TypeScript, and React.
- Comfortable working full-stack with a front-end focus.
- Skilled in SQL, data tools, and basic DevOps.
- Passionate about growth and data-driven decision making.
- High energy and ownership.
Benefits
- £70–90k salary + equity
- Mon–Thurs in office (London, Chancery Lane)
- Opportunity to work in a fast-paced, high-growth AI startup
- Collaborative and impactful work environment
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