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Salary
≈ $156k – $290k per year (Estimated)
Location
In office (Philadelphia)
Seniority
Senior · 5+ years exp
Visa
H-1B filings in 12 months: 74 · for this role: 38 · green card filings: 31

Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Oct 16, 2026.

Overview
Company
Impact
Profile match
Susquehanna International Group is a privately held quantitative trading firm headquartered in Bala Cynwyd near Philadelphia, Pennsylvania, that makes markets and trades across essentially all listed financial products with a focus on derivatives. It was founded in 1987 by a group of college friends who had traded on the floor of the Philadelphia Stock Exchange, and it also runs institutional sales, growth equity and venture capital arms, with offices in New York, Chicago, Dublin, London, Sydney, Hong Kong and Mumbai. It hires software developers in C++ and C#, quantitative researchers and traders, network and systems engineers, business operations analysts and interns and graduates.

Overview

Susquehanna International Group is seeking an experienced Software Developer to join a Front Office team responsible for designing and developing equities and futures trading systems.

As a developer on this team, you will work closely with traders and technologists to enhance our trading capabilities by providing innovative, scalable and stable systems. You will have direct impact on a successful desk and work directly with traders on proposing new ideas or gathering requirements for additional functionality, both of which are brought into production quickly through our short development cycles. Beyond development, you will have the opportunity to propose and investigate new technologies to help us stay ahead. We are looking for an experienced C++ Developer with experience in performance and optimization.

In this role, you will:

  • Execute on ideas quickly
  • Commit to innovation
  • Focus on the entire technical stack with an eye for building a stable, scalable, optimized environment with minimized risk
  • Work with traders and quantitative researchers to build, maintain, and improve order sending strategies
  • Maintain and improve existing strategies
  • Explore new technologies to find the optimal solution
  • Exercise strong object oriented programming skills

What you can expect from us:

Real Impact: You’ll be designing and optimizing systems that process massive amounts of data, ensuring high performance and stability. You’ll see how your contributions towards developing and supporting leading-edge software solutions make a firm-wide impact that makes us all smarter, faster, and better.

Collaboration: Our systems engineers, network architects, technical analysts and software developers work together to create competitive edge through best-in-class technical solutions.

Growth: For many of our roles, we don’t expect you to have prior industry experience in proprietary trading or financial services to succeed at Susquehanna International Group. We’re looking for people who are naturally curious, relentless problem solvers, and have the desire to continuously innovate, learn, and grow.

Benefits: Susquehanna offers a wide array of competitive employee perks & benefits.

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 with C++
  • Familiarity with financial markets is a plus
  • Excellent attention to detail and accuracy and a thorough understanding of 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 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

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.

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

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