As a Full-Stack Engineer at Electric Twin, you will build and evolve complex systems and user interfaces, emphasizing thoughtful engineering across the full stack, from front to backend.
Build the systems that power faster decisions What makes this role different Why Full Stack Engineers care about working here What you’ll do How we work Who this role is for Our stack
At Electric Twin, a Full Stack Engineer isn’t just implementing features.
One day you might be shaping a complex user workflow in the UI. The next, designing the services and data models that make it reliable, scalable, and fast.
We build decision infrastructure powered by AI and behavioural science. Software that helps organisations explore uncertainty and test ideas before they commit.
That means the work spans the full stack:
- Thoughtful frontend experiences
- Robust, scalable backend systems
- Fast iteration grounded in solid engineering
If you like building robust systems that product teams can move quickly on top of, you’ll feel at home here.
This isn’t a role where “full stack” really means “mostly frontend” or “mostly backend”. We expect you to think across the whole system.
You’ll work on:
- Building rich product interfaces that help users reason about complex problems
- Designing APIs, services, and data models that support evolving product needs
- Connecting behaviour modelling, product logic, and UX into coherent systems
- Improving performance, clarity, and structure across the stack
You don’t need to be equally deep everywhere. But you do need to care about the whole system.
Electric Twin sits in a rare space between research and product that creates work that feels different from typical SaaS:
- Complex interactions that go beyond forms and dashboards
- Backend systems handling nuanced, evolving logic
- A platform still taking shape, where engineering judgement matters
You won’t be polishing a finished UI or maintaining a static backend. You’ll be building something still becoming itself.
You’ll help design, build, and evolve both the product experience and the systems that power it.
- Build and ship features end-to-end across frontend and backend
- Design and implement APIs, services, and UI flows
- Turn ambiguous problems into clear, working software
- Collaborate closely with product engineers to shape behaviour and experience
- Improve system quality, performance, and scalability as part of everyday delivery
- Make pragmatic trade-offs between speed, usability, and long-term maintainability
You won’t get perfectly specified tickets. You’ll be trusted to think, decide, and ship.
We’re a small, senior London-based team, together in the office three days a week by design. The work benefits from shared context, fast feedback, and real collaboration.
- Small team, fast loops, few layers
- Technical judgement is respected
- Disagreement is normal. Good ideas win.
- Strong bias toward execution and learning
No performative process. Just thoughtful people building meaningful systems together.
You’re a product-minded engineer who enjoys ownership, ambiguity, and impact.
You probably have:
- 4+ years building production software
- Experience working across the stack - front and backend
- The ability to move forward without everything fully specified
- A pragmatic approach to quality. You care about clean systems, but you ship
You’re not looking for a narrow role or rigid boundaries. You want responsibility, trust, and the chance to shape something still evolving.
React · Next.js · Python · FastAPI · SQL · GCP
Github, CI/CD, testing, and code review.
Your choice of Claude, Cursor or Codex.
What We Offer
We offer a competitive package designed to support you properly, not just on paper.
- Competitive salary.
- Meaningful equity in a high-potential seed-stage company.
- Unlimited leave. Take the time you need.
- Generous matched pension contributions.
- Private healthcare.
- Cycle to work scheme.
- Direct access to and collaboration with world-class founders.
- Hybrid working from our London office.
- Flexible working around life commitments. We value outcomes over presenteeism.
The things that actually shape your day-to-day.
Meaningful problems
We build systems that improve how organisations understand people and move forward. The work is complex, applied, and grounded in real-world impact, not AI theatre.
In-person by design
We’re in the office three days a week. Not because of policy, but because the work benefits from fast feedback, shared context, and time spent solving hard problems together.
We are flexible when life requires it and focus on impact rather than face time.
High standards, thoughtful people, low ego
You’ll work alongside thoughtful engineers, researchers and operators who care about clarity, good judgement, and building things properly. And who treat each other with respect.
Speed with intent
We move quickly, but deliberately. Fewer meetings, clear ownership, and decisions grounded in evidence.
A calm, focused environment
No performative hustle. Just smart people doing meaningful work and enjoying the process.
Top Skills
Ci/Cd
Fastapi
GCP
Git
Next.Js
Python
React
SQL
Electric Twin London, England Office
116 Baker Street, London, England, United Kingdom, W1U 6TT
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