Senior C#.Net & Python Developer

About Caxton Associates:

Caxton Associates, founded in 1983, is a global trading and investment firm with offices in New York, London, Singapore, Monaco and Dubai, and launching Bangalore in 2026. Caxton Associates’ primary business is to manage client and proprietary capital through global macro hedge fund strategies.  As part of our continued growth, we are establishing a new office in Bangalore, India. This office will play a critical role in supporting our trading, research, and operations globally. 

About the role:
We are seeking Full Stack Developers (C# .NET) to join the Software Development team. This team is responsible for building and maintaining applications supporting a wide range of users across Middle Office, Product Control, Finance, Compliance and Front Office. You will evaluate and use the latest .NET, Python, SQL and open-source technologies to deliver, maintain and enhance new and existing applications. You will work closely with users across London, Singapore and New York. 

Responsibilities:

As a Senior C# .NET developer in the Software Development team, you will be expected to 

• Write and maintain programs/scripts in both C# & Python and data analysis using SQL 

• Play a key role in the architecture and design of mission-critical trading systems. 

• Evaluate and adopt modern .NET and open-source technologies to continuously improve platform reliability and scalability. 

• Build, optimize, and maintain multi-threaded services and real-time order entry applications. 

• Ensure code quality through TDD, automated testing, and CI/CD practices. 

• Mentor and guide junior developers in best practices, design patterns, and performance optimization. 

Requirements

• At least 8 years of software development experience using C# and Python.  
• Deep knowledge of C# language features (async/await, LINQ, generics, collections) and strong fundamentals in OOP, multi-threading, and memory management. 
• Expertise in SQL development (MS SQL or equivalent), including schema design, query optimization, and stored procedures. 
• Proven experience with FIX protocol, and messaging technologies such as RabbitMQ/Kafka. 
• Strong knowledge of CI/CD pipelines, TDD, and unit testing frameworks. 
• Track record of designing reusable components, services, and libraries. 
• Degree in Computer Science, Engineering, Physics, Mathematics or related fields. 
• Prior experience in financial services is strongly preferred. 
• Effective communicator, able to collaborate with team members across regions, middle office and internal stakeholders. 
• Operates with the highest degree of ethics and integrity. 

The following would be highly beneficial: 

• Awareness of pre-trade and post-trade validation processes.  
• Strong understanding of trade lifecycle events, order types, and execution workflows. 
• Experience integrating with real-time market data feeds (Bloomberg BPIPE, Reuters). 
• Working closely with front and middle office users.