Software Engineer (£75k–£105k + Equity) at Electric Twin at Jack & Jill/External ATS

London, England, United Kingdom -

Full Time

Start Date

Immediate

Expiry Date

12 Jun, 26

Salary

105000.0

Posted On

14 Mar, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

React, Next.js, Python, FastAPI, SQL, System Architecture, API Development, AI Integration

Industry

Staffing and Recruiting

Description

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. Software Engineer (£75k–£105k + Equity) at Electric Twin - VC-backed AI Decision Infrastructure Company Description: Electric Twin - £7M raised post-seed startup Job Description: Join a small, high-velocity team building AI-powered synthetic populations to transform how governments and enterprises make decisions. You will own features end-to-end, moving between product-focused flows and robust system architecture. This is a rare opportunity to shape a malleable platform alongside founders who led data strategy for the UK Prime Minister. Why this role is remarkable: Work directly with founders Ben Warner (former Chief Advisor to the PM) and Alex Cooper (former Director of Mass Testing) on mission-critical decision infrastructure. Impact a platform that has already raised £7M and is being used by major institutions to model complex human behavior through science-based synthetic populations. Enjoy high autonomy and ownership in a small team where technical judgment is prioritized over ceremony and your architectural decisions will define the product for years. What you will do: Build and ship end-to-end features using React, Next.js, and Python/FastAPI that real users rely on for high-stakes decision-making. Architect and orchestrate AI components to ensure synthetic population outputs are reliable, explainable, and trustworthy for enterprise applications. Collaborate in a high-bandwidth environment, iterating rapidly on APIs and system boundaries while maintaining a balance between speed and long-term technical health. The ideal candidate: Proven experience building and shipping production-grade applications, with a strong bias for execution and the ability to turn vague problems into working code. Proficiency across the stack—ideally with React, Python, or SQL—and a deep interest in the engineering challenges of integrating AI into real-world workflows. A mindset that thrives in ambiguity, values technical momentum over perfect specifications, and enjoys working 4 days a week from a London-based office. Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI Career Agent 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. Next steps Step 1. Visit our website. Step 2. Click 'Talk to Jack'. Step 3. Talk to Jack so he can understand your experience and ambitions. Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role. Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction. Step 6. If not, Jack will find you excellent alternatives. All for free. 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.

Responsibilities

The role involves building and shipping end-to-end features using React, Next.js, and Python/FastAPI that users rely on for high-stakes decision-making. Responsibilities also include architecting and orchestrating AI components to ensure synthetic population outputs are reliable and trustworthy.