You will build critical decision infrastructure that uses AI-powered synthetic audiences to simulate human behavior. Working directly with hands-on founders, you'll evolve a platform that replaces guesswork with evidence-based modeling. This role requires an execution-focused engineer who can navigate ambiguity and bridge the gap between complex AI orchestration and intuitive product design.
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London, United KingdomNot Disclosed
Product / Software Engineer at £10M+ post-seed decision infrastructure startup
Most organizations make massive decisions based on gut feel. Join a London-based team backed by over £10M in funding to build the software that changes that. Led by founders with deep experience at the highest levels of government data and mass testing, this startup uses AI-powered synthetic audiences to simulate human responses in real-time. If you are a product-minded engineer who loves Python, React, and shipping features that solve complex orchestration problems without the hype, this is a rare chance to shape a platform while it's still malleable.
Overview
Role overview
Company
Electric Twin
Software
£10M+ post-seed decision infrastructure startup led by former 10 Downing Street and Mass Testing advisors
Responsibilities
What you will do
- Design and ship end-to-end features using React, Next.js, and Python/FastAPI to help users explore uncertainty through synthetic populations.
- Orchestrate complex AI components into a reliable, explainable system that provides trustworthy outputs for high-stakes decision making.
- Own the entire product lifecycle from vague problem definition to polished execution, balancing rapid momentum with long-term system health.
Candidate profile
Who this is a fit for
- Proven experience building robust web applications with a modern stack including React, Python, and cloud infrastructure (GCP preferred).
- A "thinking engineer" mindset with the ability to thrive in an environment without perfectly specified tickets or rigid corporate ceremony.
- Strong technical judgment and a bias toward action, comfortable working 4 days a week in a high-intensity London-based office environment.
What makes it remarkable
Why this role is remarkable
- Work with a high-pedigree founding team including the former Chief Advisor to the PM on Digital and Data and the former Director of Mass Testing.
- Join a post-seed startup with over £10M in funding that is solving the massive problem of how organizations model human response to uncertainty.
- High-impact opportunity where your architectural decisions on APIs and system boundaries will shape the platform’s trajectory for years to come.
Jack & Jill
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.
Meet Jack
Jack gets to know what you're great at and what you want next, then searches 14 million jobs daily and introduces you directly to hiring managers.
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.
Jack