Data Infrastructure Engineer (£70k-£90k + Equity) at Arctal
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: Data Infrastructure Engineer, AI Agents
Salary: £70k-£90k + Equity
Company Description: Arctal - AI-native financial data platform
Job Description:
Join a high-output team of five reinventing financial data. You will own the entire data infrastructure function, building systems that transform 100,000+ unstructured documents into high-stakes institutional datasets. By leveraging autonomous AI agents, you'll create a scalable engine that outproduces departments ten times its size for the world's leading asset managers.
Location: London, UK
Why this role is remarkable:
Massive leverage: Join a lean team of five that produces the output of fifty, using a proprietary fleet of autonomous AI agents (LISA, TIM, DAN, ADA) to disrupt a $100bn+ market
Founders with pedigree: Work directly with founders who have backgrounds in Cambridge ML research and have successfully co-founded deep-tech ventures like Secondmind and Sylvera
CTO Trajectory: This is a foundational role offering a "fastest-in-market" education in agentic workflows, with a clear path to leadership as the company scales to meet existing institutional demand
What you will do:
Own the end-to-end data lifecycle including ingestion, cleanup, storage, transformation, and distribution of millions of unstructured financial PDFs
Architect and maintain high-reliability pipelines and quality monitoring systems that institutional buyers rely on for multi-million dollar decision-making
Build and refine the infrastructure for existing and new AI agents, pushing the boundaries of how agentic tooling like Claude Code and Codex are used in production
The ideal candidate:
3–5 years of experience building production data pipelines or ML systems with a "data-as-a-product" mindset and a deep obsession with data integrity
Expert-level Python skills with proficiency in Postgres, async programming, task queues, and scraping, alongside daily use of agentic coding tools
Proven track record in small, high-autonomy environments (2-30 people) where you drive projects from concept to shipment without needing hand-holding or tickets
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 our website
Step 2. Click 'Talk to Jack'
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.
