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Gizmo

Senior AI Engineer

Hybrid

London, United kingdom

Senior

Full Time

05-01-2026

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Skills

TypeScript Test Machine Learning Artificial Intelligence

Job Specifications

Gizmo is an AI startup on a mission to make learning so easy that anyone can learn anything. We're building Duolingo for anything - a platform that uses gamification and social mechanics to make learning fun.

With over 1.5 million monthly active users and $5M in annual recurring revenue, we're already one of the fastest-growing startups in the UK. Backed by leading investors, we recently raised $22M in Series A funding to accelerate our vision of helping 1 billion people learn.

Role Overview

As an AI Engineer at Gizmo, you'll report directly to the CEO/Co-Founder and play a key role in shaping the product experience for our rapidly growing user base.

You'll work closely with the wider engineering team to build, test and ship features that bring our vision to life. This role is ideal for someone looking to develop deep expertise in evaluating LLMs. You'll be joining a fast-paced, collaborative team during an exciting stage of growth, with plenty of opportunity to make a significant impact and grow alongside us as we scale.

Key Responsibilities:

Design and implement AI features by leveraging prompt engineering techniques using the latest LLMs e.g. Gemini 3, ChatGPT 5.
Use the latest LLM evaluation techniques to assess and improve our LLM systems
Deploy and integrate AI models into production environments using our TypeScript backend

Requirements

You are an experienced software engineer (10+ years experience) with strong knowledge of Typescript
Degree in Machine Learning/Artificial Intelligence OR have experience in evaluating AI models and prompts
Clear communicator who can break down complexity and collaborate effectively
Driven by impact - you prioritise work that moves the needle
Self-starter with a maker mindset. We're looking for ex-founders or individuals with start-up experience.

Benefits

Highly competitive salary
You'll own a piece of what you're building - equity included
Hybrid working model with 4 days in our Shoreditch, London office.
The opportunity to become one of the earliest employees in one of the UK's fastest-growing AI startups
Private health insurance

About the Company

Gizmo is on a mission to help students remember everything they learn in a simple and fun way. We use AI to transform notes and study materials into fun quizzes that are based on cognitive science: quiz for just 10 minutes a day, and you will remember everything you learn! Gizmo is growing rapidly with teachers and students across the world who love the efficiency of the tool: just paste in your notes, and Gizmo turns them into fun, active recall quizzes. Know more