Senior Software Engineer, Electric Twin
Full stack end-to-end
£80-100k
4-5 days a week in office
Simulating human behaviour with large language models
Posted today
Simulating human behaviour with large language models
1-20 employees
Posted today
£80-100k
4-5 days a week in office
1-20 employees
Company mission
To improve our understanding of the world.
Role
Who you are
- 5+ years professional experience building production software (exceptional candidates with 4+ considered)
- Track record of owning systems end-to-end: you’ve built features across front-end and back-end, and you know how they connect
- Fluency in Python and SQL for building scalable back-end systems
- Strong ability with TypeScript/JavaScript and React/Next.js for shipping polished, performant front-end features
- Comfort balancing new feature work with refactoring: you leave code cleaner, more tested, and more maintainable than you found it
- Solid testing habits and CI/CD discipline; you see testing and design reviews as enablers of speed
- Comfort in a fast-moving environment where priorities shift with business needs.
Desirable
- Experience with data-intensive or high-throughput systems, or with LLM/AI productionisation
- Cloud ops on GCP (networking, IAM, security, cost awareness)
- Advanced Next.js skills: server-side rendering, API routes, performance tuning
- Building APIs for B2B SaaS, or working with analytics/experimentation frameworks.
What the job involves
- Own software design and architecture decisions: from schemas and APIs to modularisation and system patterns. You’ll shape how we build as well as what we build
- Ship production code every week across the stack: Python services, data pipelines, APIs, and Next.js front-end features
- Work side-by-side with a small senior team and founders: whiteboard, design, hack, test, ship
- Build clean, usable UIs in Next.js/TypeScript that make complex modelling outputs understandable and actionable
- Invest in automated testing and CI/CD: improve quality and speed for both front-end and back-end code
- Hunt down bottlenecks: profile, optimise, and tune both back-end services and front-end performance
- Refactor and improve existing systems: pay down tech debt, strengthen design, and make the codebase more maintainable
Application process
- 1. Initial video call (30 mins): Quick intro both ways.
- 2. In-person interview (60 mins): Detailed CV walkthrough.
- 3. Technical assessment (your choice): either a take-home coding test or in-person pair coding
- 4. Final in-person interview (~2 hours): Meet founders and rest of the team.
Salary benchmarks
Our take
Electric Twin is a company utilising large language models to simulate human behaviour. Through its LLM models, users can create synthetic populations that represent their target markets or research demographics in order to investigate outcomes in near real-time and make more informed decisions.
The company supplies a range of investigative tools; from qualitative polling and quantitative analysis, to simulated focus groups or even one-on-one discussions. It also enables ideas to be continuously refined through strong feedback, ensuring that strategy can always be backed by the latest data.
With such a unique proposition, Electric Twin stands out as one to watch in the rapidly developing generative AI sector. It is currently working to build out its team and, if its models are able to deliver the value suggested, there will surely be no shortage of success in its future.
Kirsty
Company Specialist at Welcome to the Jungle
Company
Company benefits
- We have an excellent health insurance package for employees with BUPA.
- All full time employees are enrolled onto our options scheme at the end of their probation period, which will be explained to new joiners in detail.
- We offer Unlimited Time Off and believe it is important for you to take sufficient rest through the year.
- Electric Twin has a generous pension scheme where we will match your individual contributions within a window of 4% - 8% under a net pay structure.
- Cycle to Work Scheme.
- We want to make sure we are providing you with what what you need to excel in your role. For IT we will provide a laptop and any accessories that you might want (e.g. monitor, keyboard etc).
- In an effort to stay on top of current trends and developments, we offer £1,000 annual L&D budget for you to use as you see fit.
Company HQ
Marylebone, London, UK
Leadership
Alex Cooper
(Co-Founder)Former COO at UNDO, Director of Mass Testing for the Department of Health and Social Care, and Advisor for 10 Downing Street. Was also an Officer in the British Army for 19 years.
Ben Warner
(Co-Founder)Former Chief advisor on Digital and Data to the Prime Minster with the UK Civil Service. Worked in Data Science at Faculty and was an EPSRC Research Fellow at UCL.
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