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Senior C# Developer | Fixed Income | Experienced Hire

Susquehanna International Group, LLP
Philadelphia, PA Other
POSTED ON 2/21/2025
AVAILABLE BEFORE 11/12/2026

Overview

Susquehanna International Group is seeking a senior software engineer to join our Fixed Income Trading Systems Team.  This team is responsible for building high performance trading systems for the Fixed Income Desk. You’ll work alongside traders, researchers, and other technology teams to create and enhance our proprietary trading systems.

In this role, you will

  • Design and create proprietary software to handle critical trading demands, including but not limited to market data, quoting, pricing, risk, and P&L
  • Work closely with traders and researchers to understand and iterate on requirements.
  • Work closely with various technology teams to deliver efficient and scalable solutions.

What we’re looking for

  • Bachelor's degree in Computer Science, Engineering, Mathematics or related discipline or its foreign equivalent
  • 5 years of progressive experience developing software applications or HFT infrastructure. 
  • Experience with object oriented design and software development in a high-performance environment using C# or Java (preferably in a Linux environment) is required
  • Excellent attention to detail and accuracy and a thorough understanding of full life-cycle development and performance optimization / latency reduction methodologies.
  • Ability to work closely with other software developers, traders, quants, and infrastructure teams 

About Susquehanna

Susquehanna is a global quantitative trading firm founded by a group of friends who share a passion for game theory and probabilistic thinking. We have incorporated this approach into our culture, where you will find relentless problem solvers within each of our core disciplines: Trading, Technology, and Quantitative Research. From offices around the world, our employees collaborate to make optimal decisions and are driven by the desire to achieve winning results together. 

What we do

We are experts in trading essentially all listed financial products and asset classes, with a focus on derivatives trading. Through market making and market taking, we handle millions of trading transactions around the world every day, providing liquidity and ensuring competitive prices for buyers and sellers. While our presence in the market is broad, our trading desks are highly specialized, allowing for a deep understanding of unique drivers of each asset class.

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.

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