Product Engineer at High-growth applied AI startup

Jack & Jill/External ATS; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A high-growth applied AI startup in London seeks a Product Engineer to lead product development from research to user-facing features. The ideal candidate will drive product strategy with a focus on applied AI and work in a unique high-autonomy culture without bureaucracy. With a track record in building complex products independently and a founder-level mindset, the candidate will thrive in a fast-paced, high-performing environment. This role offers significant ownership over product strategy and execution.

Benefits

High-autonomy culture

No meetings until 3 PM

Growth opportunities

Qualifications

• Proven track record of independent product development.
• Experience in building AI models and features.
• Ability to thrive in a fast-paced, high-performance environment.

Responsibilities

• Lead product development from research to user features.
• Utilize advanced AI techniques for product strategy.
• Drive user growth through qualitative insights and data.

Skills

Applied AI proficiency

Product development experience

Technical independence

Job description

Product Engineer

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.

Company Description

High-growth applied AI startup

Job Description

You will join a lean, elite technical team solving the universal problem of digital communication through applied AI. This role offers true ownership over product strategy and execution without the friction of managers or bureaucracy. You will build scalable infrastructure and fine-tuned models that directly impact millions in revenue.

Location

London, UK

Why this role is remarkable

• Exceptional traction, having grown from $1M to $25M ARR in a single year with a tiny technical team
• Ranked as a top global AI application based on real startup spend data alongside multi-billion dollar companies
• Unique high-autonomy culture with no product managers and dedicated deep‑work blocks with no meetings until 3 pm

What you will do

• Lead end‑to‑end product development from research and model training to final user‑facing features
• Utilize cutting‑edge techniques including fine‑tuned open‑source models, tool use, and retrieval‑augmented generation
• Drive product strategy and user growth by leveraging both qualitative insights and quantitative data engineering

The ideal candidate

• Possesses a founder‑level mindset with a track record of building and shipping complex products independently
• Highly proficient in applied AI, including model evals, infrastructure, and developing production‑ready AI features
• Thrives in an intense, high‑performing environment that prioritizes speed, focus, and unreasonable effort

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

1. Visit our website
2. Click "Talk to Jack"
3. Talk to Jack so he can understand your experience and ambitions
4. Jack will make sure Jill considers you for this role
5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction
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.