C# Developer

5 days ago

Sydney, New South Wales, Australia Susquehanna International Group Full time $120,000 - $180,000 per year

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.

If you're a recruiting agency and want to partner with us, please reach out to . Any resume or referral submitted in the absence of a signed agreement will not be eligible for an agency fee.

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