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Quantitative Data Developer

Susquehanna International Group, LLPSydney, New South Wales🇦🇺AustraliaPosted 9 Jul 2026

Why This Role Stands Out

This hybrid role offers an exciting opportunity to develop sophisticated data solutions at the intersection of technology and finance, working with massive datasets and contributing to high-performance trading systems. You'll thrive here if you're a skilled developer eager to build and optimize data pipelines, collaborate with quantitative researchers, and gain exposure to cutting-edge financial technology. Embrace this chance to grow your expertise in a dynamic, globally recognized firm.

Quick Overview

Seniority
Mid Senior
Employment type
Full Time
Work mode
Hybrid
Location
Sydney, New South Wales, Australia
NumPyPandasPython

Job Description

Overview

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 large scale computations, real time systems, high performance computing to petabytes of data. By integrating sophisticated coding techniques with innovative engineering ideas, we design and optimise systems that can process massive amounts of data while still ensuring high performance and stability. Collaborating with traders and quantitative researchers, our systems engineers, network architects, technical analysts and software developers create competitive edge through best in class technical solutions.

The Quant Data Team (QDT) is the data backbone for Susquehanna's APAC trading. We own market data end to end - utilising raw market data and transforming it into clean, well modelled datasets, and serving it to the quants and trading desks who depend on it. We work across the full sweep of APAC markets, partnering with quantitative researchers, trading desks, production pipeline teams and infrastructure to turn raw exchange feeds into the datasets that drive trading strategies.

This role can be based in either our Sydney or Hong Kong office.

What you'll do

As a Quant/Python Developer in QDT, you will work closely with quantitative researchers, strategy developers and traders to:

  • Build and maintain derived datasets and data products - designing, generating, and regenerating the datasets quants load directly for research and strategy work.
  • Source, capture and curate market data - handling a wide variety of exchange data formats (multicast/UDP feeds) and the firm's data archive.
  • Develop, maintain and deploy analytical tools and data pipelines that feed research and production - including scheduled pipelines and large scale backtest compute on distributed clusters.
  • Own data quality and incident response - investigating missing, late or anomalous data, tracing root causes upstream and keeping the data accurate and timely.
  • Performance tune storage and processing - improving data layout, load times and throughput to handle large and varied datasets efficiently.

This is a hands on role where you'll thrive on the technical challenges and see your work used every day by experienced traders and researchers across a diverse range of instruments and markets.

What we're looking for
  • Strong Python, especially the data stack (NumPy, Pandas, and columnar/array libraries such as Polars).
  • Experience with numeric/large scale data storage formats (e.g. HDF5, Parquet) and processing large, varied datasets.
  • Comfortable working in a Linux environment.
  • Solid grounding in computer networking.
  • Ability to understand financial data, models and mathematical algorithms.
  • Strong interpersonal and communication skills - you'll work daily with traders, quantitative analysts, production pipeline and infrastructure teams, and other developers, often coordinating across regions.
  • Experience or interest in capital markets, market data, probability, or applying engineering solutions to these areas is a plus.

What's in it for you :

Real Impact:As an essential member of the team, your role involves supporting, innovating, and optimizing systems processing massive amounts of data, all while ensuring high performance and stability. You'll see how your contributions towards supporting leading edge hardware and software technologies make a firm wide impact that makes us all smarter, faster, and better.

Collaboration:You will partner closely with our Trading, Quantitative Researchers, Infrastructure and Strategy Developer Teams to develop and manage scalable and highly performant systems to support trading in the region.

Growth: 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.link

Equal Opportunity Statement

We encourage applications from candidates from all backgrounds, and we welcome requests for reasonable adjustments during the recruitment process to ensure that you can best demonstrate your abilities.

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