Software Engineer – Python / FastAPI / React / Functional programming / Typescript
Location: London, UK (Hybrid)
Type: Full-time
Level: Mid to Senior
Salary: £70,000 to £100,000
About the Role:
This startup is building a cutting-edge platform to transform how engineers design physical products. Instead of creating one solution at a time, this system enables users to generate, visualise, and explore thousands of design alternatives. Faster and more intelligently than ever before.
This company is a spin-out from one of the UK’s most successful startups, built by top-tier engineers and developers from industry leading teams. We’re looking for a software engineer who enjoys writing clean, functional code and is genuinely passionate about real-world engineering not just building software, but helping change how things are designed and built.
Opportunities: Frontend or Backend
Tech Stack within the engineering environment:
* Backend: Python, FastAPI, Pydantic, PostgreSQL, Docker
* Frontend: React, TypeScript, Vite
* Infrastructure: GitHub Actions, GCP, Kubernetes (optional)
* Paradigms: Functional programming, async APIs, event-driven architecture
Responsibilities
* Build and maintain backend services using FastAPI and Python for geometry, simulation, and data workflows
* Develop responsive, performant frontends using React and TypeScript
* Work closely with domain experts (engineers, designers) to translate complex physical problems into usable software features
* Follow functional programming practices to write testable, composable code
* Own features from idea to implementation to deployment
* Contribute to architectural decisions in a fast-moving, early-stage product
Requirements
* Bachelor’s degree in Computer Science, Engineering, Physics, Mathematics, or a related technical field
* 2+ years of experience building web applications in a production environment
* Strong experience with Python and API frameworks (FastAPI, Flask, etc.)
* Proficiency with React and TypeScript
* Comfort or interest in functional programming principles and clean code architecture
* A genuine interest in engineering and the physical world
* Ability to thrive in a startup or agile environment with autonomy and ownership
Software Engineer – Python / FastAPI / React / Functional programming / Typescript