Software Engineer, Backend Developer, Full Stack Developer

Role:
Expert .NET Developer – Cross Asset Trading System

Location:

Very Flexible. Can offer Remote with occasional travel to London City offices

Contract:

12 months Rate:
Up to £700/day

About the Role:

We are partnering with a leading investment bank on an ambitious programme to modernise and enhance their cross-asset trading systems. This is a technically challenging, hands‑on role, ideal for an expert .NET developer with a strong SQL Server background and experience working in financial environments.

You will be joining a highly skilled team focused on performance, reliability, and scalability, tackling complex issues in real‑time, data‑driven applications. This is purely a tech‑heavy role—business knowledge is helpful but not required.

• Leading initiatives on DB modernisation and performance optimisation
• Archiving legacy data from key tables with precision to ensure smooth migrations
• Redesigning and refactoring high‑activity tables to improve performance and maintainability
• Developing frameworks and tooling for real‑time monitoring of trading systems
• Modernising and upgrading legacy codebases, driving best practices in .NET development

• Expert .NET Developer
  :
  Deep knowledge of .NET 8 and .NET 4.8
• SQL Server Proficiency
  :
  Strong fundamentals in querying, table design, and ETL processing large datasets (performance tuning not required)
• Expertise
  :
  Familiarity with Entity Framework or other ORMs is a plus, but not essential
• Async & Multithreading Mastery
  :
  Experience in low‑latency, data‑driven applications
• Attention to Detail
  :
  Ability to spot rare, critical issues before they reach production
• Previous experience in the finance industry
  , ideally in trading systems

• Work remotely while tackling cutting‑edge technical challenges
• Collaborate with a high‑performing team on a strategic, high‑impact programme
• Influence system design, architecture, and long‑term performance improvements
• Competitive daily rates up to £700

If you’re a highly skilled .NET developer who thrives in challenging, high‑stakes environments and loves working with complex, real‑time systems, this is the perfect opportunity to make an impact.