C# Developer, Leading Trading Firm

C# Software Engineer - Leading Trading Firm



Company Overview:

Our client is a leading global quantitative trading firm operating across major financial markets worldwide. The firm is known for its technology-led approach to trading, with a strong emphasis on engineering excellence, data-driven decision making, and robust risk management.

The culture is highly collaborative and intellectually curious, bringing together technologists, traders, and quantitative specialists in a flat, high-impact environment. Technology is viewed as a core competitive advantage, and engineers are empowered to take ownership of critical systems.


Role Overview:

This role sits within the Post-Trade Technology function, responsible for building and maintaining systems that process and store trading activity across the APAC region. You will work closely with technology peers as well as trading, operations, and compliance stakeholders to deliver scalable, reliable, and compliant post-trade solutions.


Key Responsibilities:

• Design, build, and enhance C# applications supporting post-trade processing workflows
• Develop systems that handle large volumes of transactional and reference data with high reliability
• Partner closely with trading, operations, and compliance teams on strategic initiatives
• Take ownership of projects across the full software development lifecycle
• Ensure systems meet regulatory, financial, and accounting requirements across regions
• Apply sound architectural principles and object-oriented design practices
• Contribute to testing strategies to ensure system robustness and stability

Key Requirements:

• 5+ years of professional software development experience
• Strong commercial experience with C# in a client/server environment
• Solid understanding of object-oriented programming and design principles
• Experience working with relational databases (e.g. Oracle or similar)
• Proven ability to deliver projects from requirements through to production
• Good grasp of software architecture and design patterns
• Experience with software testing methodologies
• Strong problem-solving skills with the ability to diagnose technical and business issues
• Clear communication skills, able to work with both technical and non-technical stakeholders
• Bachelor's degree in Computer Science, Engineering, Mathematics, or a related field

Nice to Have:

• Experience in financial services or trading environments
• Exposure to post-trade, clearing, or settlement systems
• Familiarity with multi-region or regulatory-driven systems
• Experience working in a Linux/Unix environment

Location & Work Setup:

• Hong Kong (APAC)
• Onsite / hybrid working model

Why Join:

• Work on mission-critical systems with real business impact
• Join a technology-driven trading firm where engineering is highly valued
• Collaborative, low-ego culture with strong learning opportunities
• Competitive compensation and benefits package
• Long-term career growth without rigid role boundaries