Product Engineer (Up to £200k + Equity) at $22M Series A AI learning startup

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 Product Engineer (AI-focused) Salary Up to £200k + Equity Company Description $22M Series A London AI learning startup backed by top-tier investors Job Description You will lead the development of production-grade AI systems for a platform serving 1.7 million monthly active users. Reporting to the CEO, you will ship features like automated marking and agentic workflows using TypeScript. This is a high-impact role focused on building the core intelligence behind a rapidly scaling global learning product. Location London, UK Why this role is remarkable

• Join one of the UK’s fastest-growing startups with $5M ARR and a mission to help 1 billion people learn through gamified AI education.
• Work directly with a founding team of Cambridge graduates and former Amazon/Google leaders in a high-autonomy, low-process environment.
• Access a generous compensation package including a salary up to £200k and meaningful equity in a recently funded Series A company.

What You Will Do

• Design and ship end-to-end AI features in TypeScript, including study material generation, automated marking, and structured content ingestion.
• Architect and iterate on sophisticated agentic prompt workflows and multi-step model pipelines using GPT-4, Claude, and Gemini.
• Build internal evaluation frameworks and tooling to systematically measure and improve AI output quality, correctness, and system reliability.

The ideal candidate

• Offers 7-8+ years of software engineering experience with deep expertise in TypeScript and a proven track record of shipping user-facing products.
• Demonstrates practical experience deploying LLMs in production, including prompt engineering, model evaluation, or an academic background in ML/AI.
• Thrives in early-stage environments, possessing strong product instincts and the ability to solve complex technical challenges with minimal supervision.

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 the job listing. Step 2. Click 'Talk to Jack', or go straight there: https://www.jackandjill.ai/jobs/product-engineer-up-to-200k-equity-at-22m-series-a-ai-learning-startup-5c6844f4-e456-453d-986b-529d44d2106c?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_5c6844f4-e456-453d-986b-529d44d2106c 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.