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Trading Systems Developer C# - SYD

Susquehanna International Group, LLP
Sydney, FL Other
POSTED ON 5/28/2026
AVAILABLE BEFORE 7/13/2027

Overview

Susquehanna is looking for a C# Developer within our Futures & Options team. In this role you will be involved in the analysis, design, and development of business-critical trading systems.

 

On a day to day basis, you'll collaborate with technologists, traders, and quantitative researchers/developers to achieve optimal outcomes. You'll see how your contributions towards developing and supporting leading-edge technologies make a firm-wide impact that makes us all smarter, faster, and better. You'll partner closely with our Traders, Quantitative Researchers, and other technology teams to deliver and manage scalable and highly performant systems to support trading in the region and globally.

What we’re looking for

  • A bachelor’s degree (or higher) in a technical or related discipline
  • A track record / knowledge / interest in trading, risk, quantitative or trading systems development is critical
  • Exceptional C# development skills with extensive knowledge of design, profiling, OO, multi-threading, and performance with a specific focus on back-end development
  • Experience in Microservices and Cloud Technologies (Preferably Azure Service Fabric, Microsoft Orleans, Envoy Proxy, gRPC, Protobuf, React JS, Docker, Kubernetes, Octopus Deploy and ELK Stack)
  • A proven track record of designing and developing business critical systems and taking projects through the entire software development cycle, from requirements gathering to production release
  • A knowledge of, or experience in trading, derivatives, risk, pricing, and Greeks will be highly regarded.

 

What’s in it for you

  • Our flat hierarchy enables you to drive meaningful impact, by leveraging your expertise and taking ownership.
  • Greenfield impact: newly created role as we scale across APAC.
  • Private healthcare and wellness initiatives.
  • Daily office lunch allowance
  • Employee Assistance and Education Assistance Progams 
  • Matched donations and corporate discounts.

 

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.

 

What we do 

 

Susquehanna’s deep integration of trading, technology and quant research makes us experts in trading essentially all listed financial products and asset classes, with a focus on derivatives. We handle millions of trading transactions around the world every day as both a market maker and market taker. Our efforts provide liquidity and ensure competitive prices for buyers and sellers. While our presence in the market is broad, our trading desks are highly specialized to allow for a deep understanding of the unique drivers of each asset class.

 

 

Equal Opportunity statementWe’re committed to building a diverse and inclusive workplace. We encourage candidates from all backgrounds to apply and are happy to provide reasonable accommodations during the hiring process.

 

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

 

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Hourly Wage Estimation for Trading Systems Developer C# - SYD in Sydney, FL
$41.00 to $50.00
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