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# Lead Python Engineer API LLM

- **Company:** Client Server
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Salary:** £90,000.0 - £115,000.0
- **Contract:** Permanent contract
- **Skills:** HTML5, Microsoft Azure, Cascading Style Sheets (CSS), Continuous Integration, Python (Programming Language), Software Engineering, TypeScript, Spring Cloud, ReactJS, Large Language Models, Fastapi, Web Technologies, Front End Software Development, Virtual Agents, Restful APIs
- **Published:** August 25, 2026
- **Apply:** https://www.client-server.com//job/lead-python-engineer-api-llm-start-up/apply

## About the Role

Do you have advanced Python skills combined with tech start-up experience?, * You enjoy taking ownership and can build software from scratch and iterate quickly

 * You have strong technical skills, primarily with Python
 * You have experience with RESTful APIs (they use FastAPI); TypeScript, React and other web technologies such as HTML5, CSS3 would be of benefit
 * You have experience with LLMs and agentic AI, like to get your hands dirty and have a proactive entrepreneurial spirit
 * You're curious by nature, happy to learn and pick up new things
 * You're keen to work in a start-up environment, comfortable with unstructured environments
 * You're collaborative with great communication skills
 * You are degree educated, minimum 2.1 at BSc from a top tier university, Computer Science or closely related discipline preferred, likely to have studied to MSc / PhD

## Description

As a Lead Python Engineer and founding team member, you'll take ownership of the design and development of scalable, cloud-native applications, working across the full software development lifecycle, from architecture and backend services through to frontend development, CI/CD and deployment on Azure.

You'll collaborate closely with the founding team to influence technical direction, solve complex engineering challenges and establish the engineering practices that will underpin the company's future growth.

You'll work primarily with Python and TypeScript, leveraging AI technologies to build innovative products that solve real world problems. This is a hands-on role with plenty of autonomy, where you'll have a direct influence on product decisions, architecture and engineering culture.


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