Founding Product Platform Engineer (£120k-£150k + Equity) at OpenHuman

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

Founding Product Platform Engineer

Salary

£120k-£150k + Equity

Company Description

OpenHuman is a pre-seed startup backed by tier-1 European investors building a decision platform that helps high-stakes teams explore possible outcomes and understand uncertainty.

Job Description

Join OpenHuman as the first dedicated product engineering hire to build the platform layer for high-stakes decision-making. You will transition technical workflows into a repeatable B2B product, designing clear interfaces for complex AI outputs. This high-ownership role involves full-stack development across Python and React to create durable, trustworthy software.

Location

London, UK

Why this role is remarkable

• Founding-level scope to build the product platform layer from first principles alongside a pre-seed team.
• Backed by tier-1 European investors, addressing complex engineering challenges in reliability, data workflows, and AI UX.
• High-impact role with meaningful founding equity and direct influence on the company’s engineering standards and culture.
  
  

What You Will Do

• Develop core full-stack features using Python and React, transforming technical prototypes into scalable, well-instrumented product surfaces.
• Architect platform foundations including auth, permissions, and APIs to ensure multi-tenant workspaces operate safely and reliably.
• Build internal tooling and customer-facing interfaces that translate sophisticated AI workflows into clear, navigable, and trustworthy software experiences.
  
  

The ideal candidate

• Has 5+ years of production software experience with strong proficiency in Python, FastAPI, React, and modern TypeScript.
• Demonstrates expert SQL and data modeling skills, comfortable navigating data-heavy environments and modern warehouses like BigQuery or Snowflake.
• Possesses a strong taste for product engineering and the ability to ship reliable cloud systems, ideally with exposure to LLM-powered tools.
  
  

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.

How does this work?

• Jack's an AI agent for job searching and career coaching. He works for you.
• Jill is the AI recruiter working for the company. She recruits from Jack's network.
• If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.
  
  

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.