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Caxton Associates

Senior Software Engineer (C# / .NET) - Team Lead

London
Level
Lead

Not stated in the posting: salary, work type, visa.

Open. First seen 3 October 2026.

About the role

About Caxton Associates:

Caxton Associates, founded in 1983, is a global trading and investment firm with offices in London, New York, Singapore, Monaco, Dubai and Bengaluru. Caxton Associates’ primary business is to manage client and proprietary capital through a suite of products designed to fit the specific needs of investors. Employing a multi-portfolio manager framework, Caxton excels in discretionary global macro investing, leveraging its diversified expertise across asset classes and markets.

About the role:

We are seeking an experienced Software Engineer to lead a team within our London-based Software Development group. This is a hands-on leadership role combining system design, delivery ownership, and team development. The team builds and maintains services and applications that support trading, compliance, and operations across the firm. You will work closely with various Technology and Operations teams across London, Bengaluru and New York.

Responsibilities:

  • Lead, mentor, and develop a small team of engineers
  • Design and build scalable, maintainable distributed systems in C#/.NET
  • Own delivery across multiple concurrent projects and priorities
  • Drive best practices in testing, CI/CD, and software quality
  • Collaborate with technical and business stakeholders across regions
  • Contribute to architecture and long-term platform direction
  • Act as the technical point of contact for the team

Requirements

  • 8+ years of software development experience with C# and the .NET stack
  • Proven experience leading or mentoring software engineers
  • Strong track record building reliable, production-grade systems
  • Solid understanding of distributed systems and architectural patterns (event-driven, layered, client-server)
  • Experience with Python and its ecosystem
  • Experience with CI/CD and modern development workflows
  • Strong SQL and relational database skills
  • Ability to manage multiple priorities effectively
  • Strong communication skills with both technical and non-technical stakeholders
  • Exposure to financial products and market data (e.g. Bloomberg, Reuters)
  • Displays and operates at the highest degree of ethics and integrity

The following would be highly beneficial:

  • Knowledge of finance, markets, order to trade life cycle
  • Experience with Bloomberg market data APIs like SAPI, B-PIPE, Desktop API
  • Experience with Docker and AWS (EC2, RDS)
  • Bachelor of Science Degree in Computer Science, Mathematics or a related field

What this role asks for

Particular to this role

.NET · Docker

Rare in Caxton Associates's other 10 open postings.

In most of Caxton Associates's ads

AWS · Python · SQL

Named in most of its open postings, whatever the role.

Compared with Caxton Associates's other open jobs.

The team: Technology HIRES STEADILY

This role is one of 4 open in Technology. 2 were posted in the last 30 days and the oldest in June: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

Python (4 of 4), AWS (3 of 4), CI/CD (3 of 4), .NET (2 of 4), C# (2 of 4), IAM (2 of 4), PowerShell (2 of 4)

OTHER ROLES ON THIS TEAM

From the team and dates on Caxton Associates's own job board.

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