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 The next step is to speak to Jack. 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. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. Next steps Step 1. Visit our website. Step 2. Click 'Talk to Jack'. Step 3. Talk to Jack so he can understand your experience and ambitions. Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role. Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction. Step 6. If not, Jack will find you excellent alternatives. All for free. We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.