Senior AI Engineer at Gizmo.ai

This job is brought to you by Jobs/Redefined, the UK's leading over-50s age inclusive jobs board.

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: Senior AI Engineer

Company Description: Gizmo.ai - Series A AI/EdTech startup backed by leading investors

Job Description:
As a Senior AI Engineer at Gizmo, you will build the AI systems powering personalized learning experiences for over 1.5 million users. You will work extensively with LLMs and prompt engineering to create adaptive, gamified content. This role offers the chance to scale a high-growth platform toward reaching one billion learners globally.

Location: London, UK

Why this role is remarkable:

• Work at a high-growth startup with proven product-market fit, 1.5M monthly active users, and £5M in annual recurring revenue.
• Join a mission-driven team fresh off a £22M Series A round aimed at revolutionizing global education through gamification and AI.
• Solve complex technical challenges including LLM personalization and scaling systems to support hundreds of millions of concurrent learners.

What you will do:

• Architect and implement sophisticated AI personalization systems using TypeScript and Python to make learning feel natural and engaging.
• Lead prompt engineering strategies and LLM integrations to generate adaptive, high-quality educational content at scale.
• Build and maintain the technical foundation required to transition the platform from millions to billions of global users.

The ideal candidate:

• Possesses 7+ years of software engineering experience with a strong track record of ownership in production-grade systems.
• Demonstrates deep technical expertise in TypeScript, Python, and hands-on LLM implementation or AI/ML integration.
• Thrives in fast-paced startup environments and is able to work from the London office four days per week.

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.