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

Caxton Associates; Greater London; On-site; GBP 120,000 - 180,000; Full time

Job summary

Caxton Associates in London seeks an experienced Software Engineer to lead a London-based Software Development team. This hands-on leadership role combines system design, delivery ownership, and team development across trading, compliance, and operations.

You will collaborate with teams in London, Bengaluru and New York. The role requires 8+ years of software development with C#/.NET, strong leadership, and a track record building reliable distributed systems.

Qualifications

• 8+ years of software development with C#/.NET.
• Proven experience leading or mentoring software engineers.
• Strong track record building production-grade distributed systems.
• Experience with Python and its ecosystem.
• Experience with CI/CD and modern development workflows.
• Strong SQL and relational database skills.
• Effective communication with technical and non-technical stakeholders.
• Exposure to financial products and market data.

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.

Skills

C#/.NET stack

Leadership/mentoring

Distributed systems

Python

CI/CD

SQL

Communication

Stakeholder collaboration

Education

Bachelor’s degree in Computer Science/Math/related

Tools

Docker

AWS

Bloomberg API

Job description

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 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