C# Trading Systems Developer - GDS

Susquehanna International; Sydney; On-site; AUD 120,000 - 170,000; Full time

Benefits offered by this job

Private healthcare and gym allowances

Wellness initiatives

Marriage leave and 2 bonus days

Fully stocked kitchen - daily meals

Regular social, sporting and community

Matched donations and corporatediscs

Job summary

Susquehanna International Group in Sydney is seeking developers to build high‑performance C# trading systems spanning server, distributed and front‑end tiers. You’ll work with traders and researchers to implement models, signals and integrated solutions across markets in Asia, US and Europe.

We value tertiary CS education or equivalent, 2+ years of C# experience, and an interest in financial markets. The role offers private healthcare, gym allowances and a collaborative, flat‑hierarchy

Qualifications

• Tertiary education in Computer Science or related field or equivalent experience.
• 2+ years of professional C# or similar development experience.
• Experience or interest in Financial Trading Systems.
• Experience with web services, distributed systems or cloud technologies is beneficial.
• Interest or experience with Linux, Python or C++ is beneficial.
• Interest or experience with WPF or other UI technologies is beneficial.
• Understanding or interest in financial markets is highly regarded but not required.

Responsibilities

• Work closely with traders and engineers on high-performance C# distributed, server-based and front-end trading systems.
• Collaborate with quantitative researchers to implement trading models and signals.
• Coordinate with other technology teams to deliver integrated trading solutions.

Skills

C#

Distributed systems

Front-end development

Quant trading knowledge

Linux

Python

C++

Web services

Cloud technologies

WPF

Education

Bachelor's degree in Computer Science or related field

Tools

Linux

Python

C++

Web services

Cloud technologies

Distributed systems

WPF

Job description

Susquehanna International Group – Sydney NSW

The GDS (Global Delta Specials) development team is responsible for developing and maintaining trading technologies that help improve the GDS desk trading efficiency and profitability. The technologies are an essential part of the desk trading that cover exchanges in Asia from Japan to India. The technologies focus on efficiently processing and monitoring market activities, quickly making trading decisions and smartly execute trading decisions. Developers in our team have the opportunity to work with all Asian as well as US and European markets on various trading models and strategies and gain exclusive knowledge on quant analysis processes and trading ideas.

What you’ll do

• Work closely with traders and other engineers on developing high performance C# distributed, server-based and front-end trading systems.
• Work closely with quantitative researchers on implementing trading models and signals.
• Work closely across other technology teams to developed integrated technical solutions for trading.
• Tertiary education in Computer Science, a related field or experience in building complex computer systems.
• 2+ years of professional C# or similar development experience.
• Experience in or a strong interest in working on Financial Trading Systems.
• Any experience with web services, distributed systems or cloud technologies beneficial.
• Any experience oran interestin working with Linux, Python or C++ beneficial.
• Any experience oran interestin workingwith inWPF or other user interface technologies beneficial.
• An understanding or interest in financial markets is highly regarded but notrequired.

What’sin it for you

• Our flat hierarchy enables you to drive meaningful impact, byleveragingyourexpertiseand taking ownership.
• Highly competitiveremunerationand attractive bonus.
• Private healthcare and gym allowances, plus wellness initiatives.
• Additionalleave entitlements including marriage leave and 2 bonus days annually.
• Fully stocked kitchen - daily breakfast and lunch.
• Regular social, sporting and community events including annual poker tournament.
• Matched donations and corporate discounts.

Explore our benefits and culture:link

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.