Python Software Engineer – Tier One Proprietary Trading Firm

About the role

A Tier One proprietary trading firm in Sydney is hiring an experienced Python software engineer to build the systems behind its trading. This is a hands-on individual contributor role with no ticket queue or product manager in between; you will work directly with traders, researchers and C++ engineers. The data volumes are large, the systems are critical, and the work ships into production quickly.

Key responsibilities

• Write production Python across trading infrastructure, research and simulation platforms, data pipelines, post-trade analysis and the tooling used by traders and researchers.
• Turn ideas into reliable, well-engineered systems, working directly with traders, researchers and C++ engineers.
• Own your systems end to end, with no external customers and no product roadmap set by sales.

Required profile

• Several years of production software engineering with clean design, testing and performance.
• Experience with large datasets and the scientific Python stack, such as NumPy and pandas, or similar tools.
• A good grounding in Linux and distributed systems.
• C++ familiarity is useful but not essential.
• Experience in trading, market data or high-performance data systems is a strong advantage.
• Engineers who write precise, reliable code and take genuine ownership of what they ship; scripting, web CRUD, notebook-only analysis, consultants, contractors or short tenures are not a fit.

What we offer

• Market-leading compensation paid as base salary plus bonus, all in cash, with no diluted equity.
• Unlimited technology budget for hardware and tooling.
• Flat, technical structure with no politics.
• Full relocation and visa sponsorship for the right candidate, with particular interest in Australian expats coming back and others with a genuine reason to settle in Sydney.