C# Developer - Risk

Susquehanna International Group; Hong Kong; On-site; HKD 600,000 - 1,200,000; Full time

Benefits offered by this job

Free breakfast and lunch

Gym reimbursement

Social events

Job summary

Susquehanna International Group in Hong Kong is seeking a passionate C# developer to join our Trading Risk team. You will build high-performance, real-time risk systems used by traders and leadership to analyze risk, P&L, and market data.

You will work across the full development lifecycle with traders, Compliance, and technologists, focusing on scalability, performance, and reliability, using distributed systems and real-time messaging.

Qualifications

• Strong proficiency in C# and object-oriented design.
• Experience with server-side and desktop apps (WPF/WinForms).
• Experience with multi-threading and real-time messaging technologies.
• Collaborative mindset with clear communication to traders, Compliance and engineering peers.
• Bachelor’s degree in Computer Science or a related field.

Responsibilities

• Develop real-time risk systems focusing on scalability, performance, and reliability.
• Partner with traders, Compliance, and technologists to deliver innovative solutions.
• Contribute to systems touching pricing, market data, scenarios, and risk metrics.
• Work across full development lifecycle from requirements to deployment and support.
• Expand toolkit with distributed systems and high-performance computing experience.

Skills

C#

WPF

WinForms

Multithreading

Real-time messaging

Education

Bachelor's degree in Computer Science or related field

Tools

Tibco RV

Job description

Overview

Are you a passionate C# developer who thrives on building high-performance, real-time systems? Join our Trading Risk team and help shape the tools that drive decision-making in a fast-paced trading environment.

Overview

Are you a passionate C# developer who thrives on building high-performance, real-time systems? Join our Trading Risk team and help shape the tools that drive decision-making in a fast-paced trading environment. At Susquehanna, technology is at the core of everything we do. Our Trading Risk team develops mission-critical systems that provide real-time market risk insights across desks, asset classes, and global markets. These tools are used daily by traders, Compliance, and executive leadership to analyze risk, limits, counterparty exposure, P&L, and more.

What You’ll Do

• Develop real-time risk systems used throughout the trading floor, focusing on scalability, performance, and reliability.
• Partner with traders, Compliance, and fellow technologists to design and deliver innovative solutions that respond to evolving business needs.
• Gain exposure across desks and financial products, contributing to systems that touch on pricing, market data, scenarios, and risk metrics.
• Work across the full development lifecycle, from requirements gathering and system design through to production deployment and support.
• Expand your technical toolkit, with hands-on experience in distributed systems, real-time messaging, and high-performance computing.

What We're Looking For

• Strong proficiency in C# and object-oriented design, with solid experience across both server-side and desktop applications (WPF, WinForms, etc.).
• Experience with multi-threading, performance tuning, and real-time messaging technologies.
• A collaborative mindset and strong communication skills—comfortable working closely with traders, Compliance, and engineering peers.
• A passion for problem-solving and innovation, with an interest in financial markets and risk systems.
• A Bachelor’s degree or higher in Computer Science, Engineering, or a related technical field.

Bonus Points For

• Experience in risk or trading systems, particularly around derivative pricing, P&L, or Greeks.
• Familiarity with Tibco RV or similar messaging middleware in real-time applications.
• Exposure to Agile methodologies and a track record of continuous improvement in software delivery.

What We Offer

• A collaborative culture that values ideas and innovation.
• A healthy work-life balance with reasonable hours and excellent perks—free breakfast and lunch, gym reimbursement, social events, and more.
• The opportunity to make an impact in a fast-moving trading environment, surrounded by smart and supportive colleagues.

About Susquehanna

Susquehanna is a global quantitative trading firm powered by scientific rigor, curiosity, and innovation. Our culture is intellectually driven and highly collaborative, bringing together researchers, engineers, and traders to design and deploy impactful strategies in our systematic trading environment. To meet the unique challenges of global markets, Susquehanna applies machine learning and advanced quantitative research to vast datasets in order to uncover actionable insights and build effective strategies. By uniting deep market expertise with cutting-edge technology, we excel in solving complex problems and pushing boundaries together.