C# Developer

A high-performance quantitative trading and technology firm is looking for a talented C# Software Engineer to join a collaborative team responsible for building and enhancing critical risk and trading support systems.

You'll play a key role in designing and developing the middleware and backend services that power risk management, position monitoring, reporting, and operational tooling. The team also builds modern full-stack applications, providing opportunities to contribute across the technology stack.

Working within a highly collaborative environment, you'll help drive automation, improve system performance, and deliver innovative solutions to complex business challenges.

• Designing and developing robust, scalable software solutions for business-critical systems
• Building maintainable, well-tested code with a strong emphasis on quality and automation
• Contributing to system architecture and technical design decisions
• Enhancing risk, reporting, and position management capabilities
• Working closely with traders, engineers, site reliability teams, and infrastructure specialists
• Continuously improving performance, reliability, and operational efficiency across platforms

• Strong software engineering and analytical problem-solving skills
• Excellent commercial experience with C# and .NET
• Strong focus on testing, code quality, and engineering best practices
• Experience with .NET Core
• Familiarity with modern development practices including CI/CD
• Experience with containerisation technologies such as Docker and/or Kubernetes
• Strong communication skills and the ability to collaborate across technical and business teams

• Exposure to financial markets, trading systems, or risk platforms
• Knowledge of derivatives, pricing, or risk management concepts
• Python and data-focused libraries such as Pandas and Num Py
• SQL and large-scale data processing
• Front-end development using React and Type Script
• Event-driven architectures, Domain-Driven Design (DDD), CQRS, or Event Sourcing
• Multi-threaded or distributed systems development
• Experience with messaging technologies such as Kafka or RabbitMQ
• Monitoring and observability tooling including Prometheus and Grafana

• Work on highly impactful systems that directly support trading and risk functions
• Join a technology-driven business where engineering is central to success
• Collaborate with experienced technologists and market professionals
• Tackle complex technical challenges in a fast-paced, low-bureaucracy environment
• Competitive compensation and genuine opportunity to influence the direction of key systems

This role would suit a software engineer who enjoys solving difficult technical problems, building robust distributed systems, and working in an environment where high-quality engineering has a direct impact on the success of the business.