C# Strategy Developer

Susquehanna technologists are at the heart of where cutting-edge technology meets the fast-paced world of trading. Our growing teams build some of the most powerful trading systems in the financial industry and solve complex problems in a constantly changing environment. From real-time systems and high-performance computing to large-scale data processing, technology is core to how we compete.  

We’re looking for a C# Strategy Developer to join our Trading Technology team. In this role, you’ll work closely with traders and quantitative researchers to design, build, and optimize business-critical trading systems and strategy tooling. You’ll help develop high-performance, scalable applications that process large volumes of market data in real time and support automated decision-making in fast-moving electronic markets. This is a hands-on role with direct impact on trading outcomes across the region.  

What You’ll Do 

• Design, develop, and enhance trading applications and strategy tools using C# in a real-time environment.  

• Partner closely with traders, quantitative researchers, and technologists to implement and refine trading logic and supporting systems.  

• Build scalable, reliable, and high-performance solutions that process large volumes of market and trading data.  

• Tune and optimize systems for latency, throughput, stability, and operational resilience.  

• Contribute across the full software development lifecycle, from requirements gathering and design through deployment and production support.  

• Help evolve the architecture, tooling, and engineering practices that support our trading systems over the long term.  

• Bachelor’s degree or higher in Computer Science, Engineering, or a related technical discipline.  

• 5+ years of professional experience designing and developing applications using C# in a heterogeneous technical environment.  

• Strong command of object-oriented design, multi-threading, profiling, performance tuning, network/socket programming, and interprocess communication.  

• Experience building high-performance, real-time, or distributed systems with demanding reliability and scalability requirements.  

• Proven ability to deliver complex software systems that meet challenging business and technical goals.  

• Prior experience developing automated trading, market making, or other algorithmic trading systems is highly regarded.  

• Experience writing trading system logic that manages orders and interacts with live markets is strongly preferred.  

• Knowledge of options, pricing concepts, and Greeks would be a plus.  

• Strong attention to detail, sound judgment, and a collaborative approach to problem-solving.  

Why Join Susquehanna 

Real Impact: 
Your work will directly support trading in live markets. By combining sophisticated programming with innovative engineering, you’ll help build systems that make Susquehanna smarter, faster, and better.  

Collaboration: 
You’ll work side-by-side with traders, quantitative researchers, and infrastructure teams in a highly collaborative environment where ideas move quickly from concept to production.  

Growth: 
We’re looking for people who are naturally curious, relentless problem solvers, and motivated to continuously learn, improve, and innovate.  

Benefits: 
Susquehanna offers a competitive compensation package and a wide range of employee perks and benefits.  

About Susquehanna 

Susquehanna is a global quantitative trading firm powered by scientific rigor, curiosity, and innovation. Founded on game theory and probabilistic thinking, we bring together experts in trading, technology, and quantitative research to solve complex problems in dynamic financial markets. Across offices around the world, our employees collaborate to make optimal decisions and develop impactful strategies in a highly competitive environment.  

We are experts in trading listed financial products and asset classes, with a strong focus on derivatives. Through market making and other trading strategies, we handle millions of transactions globally and provide liquidity to financial markets every day.  

Equal Opportunity Statement 

We’re committed to building a diverse and inclusive workplace. We encourage applications from candidates of all backgrounds and welcome requests for reasonable adjustments during the recruitment process so candidates can best demonstrate their abilities. 

Susquehanna does not accept unsolicited resumes from recruiters or search firms. Any resume or referral submitted in the absence of a signed agreement will become the property of Susquehanna, and no fee will be paid. 

#LI-AK1