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Susquehanna International Group

Global quantitative trading, liquidity provision, research

Lead C# Developer - Core Trading Technology

Engineering LeadershipPosted on Nov 9
Full-timeSydney NSW, AustraliaNo salary listedIn-person

About the Job

Requirements

  • A bachelor's degree or higher in a technical or related discipline.
  • At least 10 years of C# experience across server-side systems, including strong multithreading, and client-side development.
  • Proven experience leading or managing a development team, including mentoring junior engineers and developing talent.
  • Deep knowledge of software design, object-oriented principles, profiling, performance tuning, multithreading, and user interface development on both client and server sides.
  • A track record of delivering complex, business-critical systems through the full software development life cycle, ideally in an Agile environment.
  • The ability to engage traders, quantitative analysts, developers, and senior management.
  • The ability to meet deadlines and make sound decisions under pressure in a fast-paced environment.
  • Excellent attention to detail and accuracy.

Responsibilities

  • Lead and manage a team of developers by setting priorities, allocating work, and removing blockers.
  • Mentor and coach junior and mid-level developers through code reviews, pairing, and career development.
  • Contribute to hiring, onboarding, performance feedback, and succession planning.
  • Foster a high-performing, collaborative, and accountable engineering culture.
  • Own the analysis, design, and development of business-critical applications, from requirements gathering through production release and support.
  • Set technical direction and architecture standards, and make design trade-offs across performance, resilience, and maintainability.
  • Establish and uphold engineering best practices, including code quality, testing, profiling, continuous integration and delivery, and operational readiness.
  • Remain hands-on where needed, including prototyping, addressing complex multithreading and performance problems, and reviewing critical code.
  • Partner with traders, quantitative researchers, and senior technology stakeholders to understand needs, set expectations, and communicate delivery status and risks.
  • Drive continuous improvement of the team's capabilities and applications through technology, automation, and process.
  • Assess where new technologies can add value to the trading platform.

Desired Qualifications

  • Experience with Windows Presentation Foundation (WPF).
  • Experience running and deploying .NET Core applications on Linux.
  • Experience with real-time applications, especially Tibco RV.
  • Experience in a front-office trading or financial markets environment.

About the Company

Susquehanna International Group

Global quantitative trading, liquidity provision, research

Susquehanna International Group (SIG) is a global quantitative trading firm that provides liquidity in equities, fixed income, commodities, and derivatives for institutional clients. Its core approach combines cutting-edge technology with quantitative research to build algorithms and models that identify trading opportunities and manage risk, enabling efficient, profitable trading. SIG differentiates itself through its deep emphasis on data-driven decision making, advanced technology, broad asset class coverage, and a strong global presence with offices in North America and regulated international locations. The company aims to generate trading profits by executing well-priced trades while supporting the careers of professionals in trading, technology, and quantitative research, all within a privacy-conscious framework.

Company size
1,001-5,000
Company stage
Not listed
Total funding
Not listed
Headquarters
Lower Merion Township, Pennsylvania
Founded
1987

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