About Electric Twin

Electric Twin is building the future ofstrategic decision-making.

We use large language models (LLMs) to simulate human behaviour, creatingscience-based synthetic populations that mirror real markets and demographics.

Our platform gives leaders in business and government a new way to explore outcomes — from qualitative polling and quantitative analysis to simulated focus groups and one-to-one discussions. The result: faster insight, stronger evidence, and more confident decisions.

With a unique proposition in the rapidly developing generative AI sector, Electric Twin is poised for significant growth. We’re backed by world-class leadership, including:

Alex Cooper (Co-founder) – Former COO at UNDO, Director of Mass Testing for the UK’s Department of Health, and Advisor for 10 Downing Street
Ben Warner (Co-founder) – Former Chief Advisor on Digital and Data to the UK Prime Minister, Data Scientist at Faculty, and EPSRC Research Fellow at UCL

We’re now looking for aSenior Full-Stack Engineer to help us build the next generation of applied AI tools.

What You’ll Do

Build and ship production features end-to-end acrossPython,SQL, andNext.js.
Design APIs, data pipelines, and UIs that make complex model outputs intuitive and actionable.
Own architecture and design decisions — schemas, modularisation, and system patterns.
Refactor and optimise existing systems for performance and maintainability.
Improve quality and speed through testing and CI/CD.
Work side-by-side with founders and senior engineers — we collaborate on-site four days a week.

What We’re Looking For

5+ years’ experience building production software (exceptional 4+ considered).
Strong proficiency inPython andSQL for scalable back-end systems.
Skilled withTypeScript,React, andNext.js for high-quality front-end work.
Solid testing habits and CI/CD experience.
Product-focused mindset and attention to code quality.
Comfortable working on-site in a fast-paced, collaborative startup.

Nice to Have

Experience with data-heavy or high-throughput systems.
Exposure to applied AI or LLM integrations (no model training required).
Familiarity withGCP, especially IAM, networking, and security.

Why Electric Twin

Impact – Shape both the product and how we build it.
Pace – We ship weekly; your work goes live fast.
Team – Small, sharp, and experienced.
Learning – Work hands-on with cutting-edge AI applications that matter.

Electric Twin Ltd remote jobs

Senior Full-Stack Engineer (Python + Next.js)