As a founding engineer, you will build the product layer that makes OpenHuman’s complex AI reasoning usable and repeatable. You will design systems for data ingestion, workflow execution, and evidence auditing, turning raw AI prototypes into a polished B2B platform. This role bridges the gap between high-touch technical work and scalable software.
Founding Product Platform Engineer at OpenHuman
OpenHuman is seeking a Founding Product Platform Engineer in London to build the product layer for AI systems that preview possible futures. Move beyond "magic" forecasts and help build an auditable decision platform where every prediction is testable and traceable. You'll lead the development of the platform's core UI, APIs, and data workflows, turning complex AI reasoning into high-stakes software that enterprise teams trust. This is a rare senior-to-staff level founding role offering meaningful equity and the chance to define the architecture of a new category of AI software.
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Location
London, United Kingdom
Compensation
Not Disclosed + Equity
Company
OpenHuman
Role overview
Every decision that matters is a decision about people.
Yet we make them knowing almost nothing about the people themselves — reducing them to numbers, averages, demographics, to whatever was easy to count.
This has always been the limit: not that people are unknowable, but that we never had a way to understand them at the depth real decisions require. So we guessed — and the cost of guessing about people is paid by people.
We think that limit is ending.
We are building toward a world where the people affected by a decision are present in it, faithfully, before it is made — understood, not flattened into a statistic.
We believe people are knowable without being reduced, and that the largest questions of the coming century — how markets move, how institutions hold, how societies choose — come down to understanding human beings.
It is the most important problem we know of, and the most interesting.
We are assembling a small team across engineering, research, applied AI, and go-to-market.
If understanding people is the work you want to do, come build this with us.
What you will do
- Build the core product using Python (FastAPI) and React (Next.js/TypeScript), architecting the systems that manage customer workspaces and data ingestion.
- Design and implement customer-facing interfaces that allow users to query, explore, and audit AI-generated insights with clear evidence provenance.
- Collaborate with AI engineers to productize complex reasoning workflows, ensuring high reliability, observability, and security foundations from day one.
Who this is a fit for
- Has 5+ years of software engineering experience with a strong mix of backend systems (Python) and frontend product craft (React/TypeScript).
- Demonstrates deep expertise in building data-intensive B2B SaaS products involving complex workflows, artifact versioning, and high-reliability data modeling.
- Possesses a bias toward ownership in ambiguous environments and the product judgment to make complex analytical systems feel intuitive and reliable.
Why this role is remarkable
- Founding-level ownership at an early-stage company where you define the engineering standards, architecture, and core product culture.
- Directly solve the “black box” AI problem by building interfaces and infrastructure that make messy data and uncertain predictions completely inspectable and trustworthy.
- Work alongside expert founders to turn innovative AI reasoning workflows into a repeatable, high-impact platform for global enterprise decision-makers.
How Jack & Jill work together
I get to know what you’re great at, then find roles you’d never find yourself.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.
I recruit from Jack’s network and make the intro when I spot a great match.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.
Jack gets to know what you're great at and what you want next, then searches 15 million jobs daily and helps you discover roles at companies like this.
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Jill is the AI recruiter working for the company. She recruits from Jack’s network.
If your profile’s a match and OpenHuman wants to meet, Jill will make the intro. In the meantime, Jack will send you excellent alternatives.