Python Developer

Job description

Python Engineer

(AI / LLM Focus)

London (Hybrid) | Fintech Scale-Up

We’re partnering with a fast-growing fintech company in London that’s redefining how financial data is leveraged through cutting-edge AI. They’re now looking for a Python Engineer with strong experience in AI and Large Language Models (LLMs) to help build intelligent, scalable products used by thousands of customers.

This is a high-impact role where you’ll work closely with product, data, and engineering teams to bring AI-driven features into production.

What you’ll be doing:

• Designing and building scalable backend systems using Python
• Developing and integrating LLM-powered features into core products
• Working with modern AI frameworks (e.g. OpenAI, LangChain, Hugging Face)
• Collaborating with data scientists to productionise models
• Improving system performance, reliability, and scalability
• Contributing to architectural decisions in a growing engineering team

What they’re looking for:

• Strong experience with Python in a production environment
• Hands-on experience with LLMs or applied AI (prompt engineering, fine-tuning, RAG, etc.)
• Experience building APIs and backend services
• Solid understanding of cloud platforms
• Ability to work in a fast-paced, product-driven environment

Why join?

• Work on genuinely impactful AI products in fintech
• Strong engineering culture with a focus on innovation
• Backed by top-tier investors
• Competitive salary + meaningful equity
• Flexible hybrid working in London

Extra information

Status

Open

Education Level

Secondary School

Location

City of London

Type of Contract

Full-time jobs

Published at

08-05-2026

Full UK/EU driving license preferred

No

Car Preferred

No

Must be eligible to work in the EU

No

Cover Letter Required

No

Languages

English