Senior AI Engineer

Nothing Tech; Greater London; On-site; GBP 70,000 - 100,000; Full time

Job summary

A contemporary technology company in Greater London seeks an innovative Senior AI Engineer to redefine mobile AI experiences. In this role, you will leverage cutting-edge technologies to create transformative experiences, taking projects from concept to completion. Candidates should have a degree in Computer Science or equivalent experience, a strong track record in AI feature development, and a keen eye for design. Join a team that values creativity and accelerates ideas, and help shape the future of AI on personal devices.

Qualifications

• A strong track record shipping AI-powered features in fast-paced environments.
• Experience across the stack: mobile apps, APIs, backend services.
• An eye for design and user experience.

Responsibilities

• Create transformative AI experiences across devices.
• Build and iterate on projects in various AI domains.
• Take ownership from concept to production.

Skills

AI technologies

Speech recognition

Generative sound

Image generation

Behavioural understanding

Education

Degree in Computer Science, Engineering, or related field

Job description

Nothing exists to make tech feel exciting again.

We’re building a different kind of technology company, one that puts design, emotion, and human creativity at the heart of everything we do. From the way our products look and feel to how we communicate and show up in culture, we believe technology should make you feel something.

Founded in London in 2020, we’ve grown from idea to global challenger in just a few years. Backed by GV (Google Ventures), EQT Ventures, and C Ventures, and investors like Tony Fadell (iPod), Casey Neistat, and Kevin Lin (Twitch), we’re now sold in 40+ markets with millions of users worldwide.

The Role

We’re looking for a Senior AI Engineer to help us reimagine what mobile AI can be. This isn’t about bolting models onto apps. It’s about designing, prototyping, and building experiences that feel new—where AI is less a feature and more a living part of the product.

You’ll join a small, design-oriented research and development team. We like people who are curious, product‑minded, and a little restless—people who want to break the mould and try things that haven’t been done before. One week you might be experimenting with speech recognition or generative sound; the next, building a service that scales to millions. You’ll own projects end to end, obsessing over details and making sure the work doesn’t just function but feels right.

Responsibilities

• Use the latest AI technologies to create transformative experiences across our devices
• Ideate, build, and iterate quickly on projects spanning speech, sound, image generation, and behavioural understanding
• Take full ownership of projects, from concept to production, with an obsession for getting the details right

Requirements

• A degree in Computer Science, Engineering, or related field—or equivalent hands‑on experience
• Strong track record shipping AI-powered features in fast-paced, high-growth environments
• A generalist mindset: you’re comfortable moving across the stack, from mobile apps to APIs to backend services
• Deep curiosity about large language models (LLMs) and excitement to integrate them into mobile experiences
• An eye for design and user experience, and the ability to work closely with designers to craft intuitive products

We’re at the very beginning of what AI can mean on personal devices, and we want builders who see that as an opportunity to shape the future. If you’re excited to work in a place where ideas move fast, details matter, and design and engineering meet in unexpected ways, we’d love to hear from you. Tell us what you’ve built, what excites you about AI, and how you’d like to push the boundaries with us.