Data Infrastructure Engineer (£80k-£120k + Equity) at Stealth AI data startup founded by Cambridge ML researchers

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: https://www.jackandjill.ai/jobs/data-infrastructure-engineer-80k-120k-equity-at-stealth-ai-data-startup-founded--2ecf97b8-2b23-4d13-b926-2599f0bb07c5/apply?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_2ecf97b8-2b23-4d13-b926-2599f0bb07c5.

Job Title

Data Infrastructure Engineer, AI Agents

Salary

£80-120k + 0.75-1% Equity

Company Description

Stealth AI data startup founded by Cambridge ML researchers and serial founders (Secondmind, Sylvera)

Job Description

You will own the end-to-end data function for a high-output team of five that outperforms departments ten times its size. By building sophisticated infrastructure to turn 100k+ unstructured financial documents into high-fidelity datasets, you will directly enable the world's largest asset managers and investment banks to make million-dollar decisions.

Location:

London, UK

Why This Role Is Remarkable

• Founding-level impact in a lean team where five people produce the output of fifty through advanced AI agent orchestration.
• Direct exposure to leadership from Cambridge ML research and successful exits, working at the intersection of finance and agentic AI.
• Clear trajectory to a CTO path or a world-class education in building production-grade data systems for the next era of financial services.

What You Will Do

• Architect and maintain robust data pipelines for the ingestion, transformation, and distribution of massive unstructured datasets from PDFs.
• Collaborate with and build new autonomous AI agents (like LISA and DAN) to automate complex document parsing and validation.
• Ensure absolute data integrity and quality for institutional clients, owning the infrastructure that keeps datasets current and correct 24/7.

The Ideal Candidate

• 3–5 years of experience building production data pipelines or ML systems using Python, Postgres, and asynchronous task managers.
• A product-first mindset with an obsession for data quality and experience shipping in fast-paced startup environments of 2–30 people.
• Deep familiarity with agentic tooling and LLMs, using Claude Code or Codex daily as a primary part of your development workflow.

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: https://www.jackandjill.ai/jobs/data-infrastructure-engineer-80k-120k-equity-at-stealth-ai-data-startup-founded--2ecf97b8-2b23-4d13-b926-2599f0bb07c5?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_2ecf97b8-2b23-4d13-b926-2599f0bb07c5.

Step 2. Click 'Talk to Jack', or go straight there: https://www.jackandjill.ai/jobs/data-infrastructure-engineer-80k-120k-equity-at-stealth-ai-data-startup-founded--2ecf97b8-2b23-4d13-b926-2599f0bb07c5/apply?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_2ecf97b8-2b23-4d13-b926-2599f0bb07c5

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.