Lead Python Engineer API LLM - Start-up

Lead Python Engineer API LLM - Start-up

Full-Time 115000 - 115000 £ / year (est.) Working from home possible
Client Server

At a Glance

  • Tasks: Lead the design and development of innovative AI-driven applications.
  • Company: Fast-growing AI start-up transforming compliance in regulated industries.
  • Benefits: Salary up to £115k, equity, and excellent career growth opportunities.
  • Other info: Flexible work location with two days in London and one in Cambridge.
  • Why this job: Join as a founding engineer and make a real impact in a collaborative environment.
  • Qualifications: Advanced Python skills, experience with RESTful APIs, and a degree in Computer Science.

The predicted salary is between 115000 - 115000 £ per year.

Lead Python Engineer / Developer (API LLM Python) to £115k Do you have advanced Python skills combined with tech start-up experience?

You could be joining a fast growing AI start-up as one of its founding engineers, helping to build technology that is transforming compliance and operational efficiency across the NHS and wider regulated industries.

With strong backing and ambitious growth plans, you'll have the chance to make a genuine impact while working alongside experienced founders in a highly collaborative environment.

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 Type Script, 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.

Location / WFH: You'll join the team in London two days a week, with one day a week in Cambridge too (expenses covered) and flexibility to work from home.

About you: 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 Fast API); Type Script, 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 / Ph D What's in it for you: Salary to £115k Equity Impactful role with excellent career growth opportunities Apply now to find out more about this Lead Python Engineer / Developer (API LLM Python) opportunity.

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Lead Python Engineer API LLM - Start-up employer: Client Server

Client Server is an exceptional employer, offering a dynamic work culture that fosters innovation and collaboration in the heart of London. With competitive salaries, comprehensive benefits including life assurance and a wellness package, and the flexibility to work from home, employees are empowered to thrive both personally and professionally. Join a highly profitable Hedge Fund where your skills will be valued, and you will have ample opportunities for career progression in a senior role.

Client Server

Contact Details:

Client Server Recruitment Team

We think you need these skills to ace Lead Python Engineer API LLM - Start-up

Advanced Python Skills
Tech Start-up Experience
Cloud-native Application Development
Full Software Development Lifecycle
RESTful APIs
FastAPI
TypeScript