AI Engineer (£170k + Equity) at Gizmo.ai

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network

Job Title: AI Engineer

Salary: £170k + Equity

Company Description: Gizmo.ai - Series A AI-powered learning platform

Job Description: Join one of the UK's fastest-growing startups as an early engineering hire reporting directly to the CEO. You will build and ship production-ready AI features that help over 1.5 million monthly users learn anything through gamification. This role focuses on implementing LLM features and evaluation frameworks using TypeScript to scale a product with $5M ARR.

Location: London, UK

Why this role is remarkable:

• Join a high-growth startup that recently raised a $22M Series A to help 1 billion people learn through AI-driven cognitive science.

• High-impact opportunity reporting directly to a CEO with ML expertise, shaping the product roadmap for millions of active users with minimal process.

• Work at the bleeding edge of Generative AI, deploying the latest models like GPT-5 and Gemini to solve the universal problem of boring education.

What you will do:

• Design and implement production AI features using advanced prompt engineering with the latest LLMs into a high-performance TypeScript backend.

• Build and maintain robust LLM evaluation frameworks to systematically assess model performance and improve system accuracy.

• Collaborate in a small, high-calibre engineering team to own features end-to-end, from initial design through to global deployment.

The ideal candidate:

• An experienced software engineer with over 7 years of professional experience and deep proficiency in TypeScript and backend systems.

• Practical expertise in AI/LLM integration, including production experience with LLM APIs, prompt engineering, or model evaluation techniques.

• A self-starter with a maker mindset and previous startup experience who thrives in autonomous, fast-paced environments where shipping is prioritized.

Where you apply:

If you are interested, visit our website and click "Talk to Jack" to learn more and apply.