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# Lead Software Engineer

- **Company:** Client Server
- **Location:** London, UK (Remote available)
- **Experience:** Expert
- **Salary:** £120,000.0 - £200,000.0
- **Contract:** Permanent contract
- **Skills:** Amazon Web Services, Microsoft Azure, Continuous Integration, Data Structures, Software Design Patterns, Python (Programming Language), Object-Oriented Software Development, Systems Development Life Cycle, Cloud Services, Software Construction, Fastapi, Api Design
- **Published:** November 3, 2026
- **Apply:** https://www.client-server.com//job/lead-software-engineer-python-api-fintech-5/apply

## About the Role

* You're an experienced Software Engineer with Python expertise and a strong knowledge of software engineering best practices and full SDLC experience
 * You have technical / 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

## Description

As a Lead Software Engineer 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 technical leadership. You'll set the standards and mentor more junior developers, fostering a culture of continuous improvement and self development.