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

Job Title

Founding Product Platform Engineer

Salary

£120k-£150k + Equity

Location

London, UK

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. This high‑ownership role involves full‑stack development across Python and React to create durable, trustworthy software.

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.

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