Python Developer / Team Lead - Fintech

Client Server; Greater London; On-site; GBP 90,000 - 120,000; Full time

Job summary

Client Server is seeking a Python Developer / Team Lead in London with hybrid work options. The role combines hands-on development with people management to deliver new features and refactor parts of the core banking platform that integrates with major banks.

You will mentor junior developers, set engineering standards, and drive continuous improvement while collaborating across architecture and product teams. Remote-friendly with in-office presence in Central London.

Qualifications

• Experienced Python developer with full SDLC experience.
• Has team leadership experience and conducts 1-2-1s and performance reviews.
• Knowledge of cloud services (GCP preferred; AWS/Azure acceptable).
• Experience building APIs, preferably with FastAPI.
• Strong CI/CD, testing, and deployment knowledge.
• Solid CS fundamentals: OOP, data structures, design patterns, algorithms.
• Collaborative, pragmatic, with strong communication.
• STEM degree with 2.1+.

Responsibilities

• Lead a small tech team to deliver new features and refactoring.
• Contribute to the core banking platform integrating with major players.
• Balance architecture/design with people management (roughly 50/50).
• Mentor juniors and conduct 1-2-1s and performance reviews.
• Set standards and foster continuous improvement.

Skills

Python

Team leadership

Cloud services (GCP/AWS/Azure)

API development (FastAPI)

CI/CD & Testing

OOP & Design Patterns

Communication

STEM degree (2.1+)

Education

2.1+ STEM degree

Tools

FastAPI

CI/CD tooling (Jenkins/GitHub Actions)

Job description

Python Developer / Team Lead - FinTech Client Server London, England

Python Developer / Team Lead London / WFH to £120k

Are you a skilled Python Developer with team leadership experience?

You could be progressing your career at a well-funded and profitable FinTech start-up.

As a Python Developer / Team Lead you’ll head up a small, talented tech team to deliver new features and enhancements as well as some refactoring work, contributing to the core banking platform which integrates with major players such as HSBC. There’s a relatively young codebase and lots of new projects to get stuck into.

You’ll be collaboratively problem solving in a hands-on role with approximately 50/50 split between architecture / design and people management. You’ll set the standards and mentor more junior developers, fostering a culture of continuous improvement and self development.

Location / WFH:

You’ll join colleagues in the Central London office with flexibility to work from home twice a week in a hybrid model.

About you:

• You’re an experienced Python Developer with a strong knowledge of software engineering best practices and full SDLC experience
• You have team leadership experience, happy to mentor and develop others as well as provide 1-2-1s and performance reviews
• You have a good knowledge of cloud based services (they use GCP but AWS or Azure experience is fine)
• You have experience of building APIs, ideally FastAPI experience
• You have a good knowledge of CI/CD, testing and deployment
• You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms
• You’re collaborative and pragmatic with great communication skills
• You’re degree educated in a STEM discipline, having achieved a 2.1 or above

What’s in it for you:

As a Python Developer / Team Lead you will earn a competitive salary (to £120k) plus pension and other benefits.

Full-time