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Jack & Jill Linkedin · Posted 18d ago

Applied AI Engineer at $4.5M Seed-funded AI startup backed by Coinbase and Spotify founders

London, Westminster, United Kingdom

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Indexed description

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

Applied AI Engineer

Salary

Not Disclosed

Company Description

$4.5M seed-funded AI startup backed by Coinbase, Reddit, and Spotify founders

Job Description

You will lead the development of LLM-powered features for industries like aerospace and healthcare, moving beyond simple wrappers to build complex, reliable domain workflows. As an early engineer, you’ll own the end-to-end lifecycle—from designing multi-step agents to shipping production-ready document intelligence systems that transform manual physical-world processes into software-speed operations.

Location

London, UK

Why this role is remarkable

  • Join an elite team of former unicorn founding engineers and talent from Google, Amazon, and X building for the physical world.
  • Work within a high-growth environment boasting 7-figure revenue and a $4.5M seed round that was 14x oversubscribed by Tier-1 VCs.
  • High-ownership culture with zero politics where you can ship user-facing AI features to production from day one.

What You Will Do

  • Design and deploy multi-step agents and orchestration tools that solve complex, real-world workflows beyond isolated prompts.
  • Build robust evaluation frameworks and monitoring systems to catch regressions and ensure model reliability in production.
  • Extract structured data from messy real-world documents like PDFs and scans using advanced document intelligence techniques.

The ideal candidate

  • Proven experience building production AI systems using Python, OpenAI/Anthropic SDKs, and structured output patterns.
  • Strong background in full-stack integration, capable of working across TypeScript/React and Python to deliver seamless AI features.
  • Background in high-stakes environments such as early-stage startups, founder fellowships (YC/EF), or stealth-to-scale ventures.

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/applied-ai-engineer-at-4-5m-seed-funded-ai-startup-backed-by-coinbase-and-spotif-0869bb4f-ceab-4e2f-9f5d-267fb4e76d25?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_0869bb4f-ceab-4e2f-9f5d-267fb4e76d25

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.

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