Jack & Jill
Product Engineer (£100k-120k+ + Equity) at Warden AI
Jack & JillUnited Kingdom2 days ago
Full-timeEngineering

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: Product Engineer


Salary: £100k-120k+ + Equity


Company Description: Warden AI - VC-backed AI Assurance platform


Job Description:

As a founding-tier engineer at Warden AI, you will build the core architecture of a platform ensuring AI fairness and transparency. Partnering directly with the CTO (ex-Monzo Staff Engineer), you will own the full lifecycle—from prototyping fairness modules to hardening production-grade compliance reporting for global enterprise HR vendors.


Location: London, UK


Why this role is remarkable:

  • Join a high-calibre founding team with leadership experience from Monzo and Onfido, backed by top-tier investors including Playfair Capital and founders of Codat and Revolut.
  • Solve a mission-critical global problem as regulation like the EU AI Act and NYC bias laws move from guidance to strict enforcement.
  • High-autonomy environment where you influence the tech stack and leverage cutting-edge AI tools like Cursor and Claude to ship impactful features at pace.


What you will do:

  • Design and ship end-to-end features using TypeScript, React, and Python to analyze large datasets for AI bias and factual accuracy.
  • Partner directly with customers to implement reliable API connectors and tailor integration strategies for leading AI talent platforms.
  • Build automated data pipelines and instrumented monitoring to generate real-time audit reports and public trust dashboards for enterprise clients.


The ideal candidate:

  • A versatile product-minded generalist with a track record of shipping production-grade services and data pipelines in high-growth startup environments.
  • Technically proficient in TypeScript, Next.js, and Python, with a pragmatic approach to balancing rapid prototyping with robust, maintainable architecture.
  • Exceptional communicator who thrives in ambiguity and is excited to shape the future of responsible AI through fairness and transparency.


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.

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