Backend Software Engineer C# Python

Backend Software Engineer / Developer (C# Python Data Lakes) London / WFH to £150k+

Are you a data savvy Backend Software Engineer?

You could be joining a Hedge Fund with complex work and substantial bonus earning potential.

As a Backend Software Engineer you will join a growing team building a modern medallion architecture data platform, working across everything from data engineering and distributed systems to infrastructure and frontend. This is a hands-on role in a small, collaborative team where you’ll have real ownership and impact.

Your role:

• Design and build data platform components using C# and Python
• Develop and optimise ETL pipelines, Data Lakes/ Lakehouses and distributed systems
• Improve infrastructure, observability and CI/CD practices
• Maintain and evolve existing systems (microservices, ETL, Excel add-ins)
• Support platform operations, ensuring reliability and performance

• You have strong backend development experience with both C# and Python
• You have experience of designing and operating data-intensive and distributed systems
• You have a strong knowledge of databases (Relational, NoSQL and Columnar)
• You’re keen to take ownership and work across the full development lifecycle
• You have experience of working with financial or market data
• You’re collaborative and pragmatic with strong stakeholder management skills

As a Backend Software Engineer / Developer you will receive a competitive package:

• Salary to £100k
• Bonus
• Pension
• Self development and career progression opportunities