Senior eFI Engineer: Low-Latency Fixed Income

Westpac Banking Corporation; Sydney; Hybrid; AUD 180,000 - 260,000; Full time

Job summary

Westpac in Sydney is seeking an Electronic Fixed Income (eFI) Senior Engineer to design, develop and support its electronic trading capabilities across Fixed Income markets.

You will partner with traders, quants and technology teams to deliver scalable, low-latency pricing, RFQ and execution workflows, and reliable market connectivity.

The role focuses on modernising the eFI platform, integrating venues and data sources, and maintaining robust real-time trading services.

Qualifications

• Strong software engineering experience, preferably with Java or C++.
• Experience developing or supporting electronic trading systems.
• Good understanding of Fixed Income markets and electronic trading workflows.
• Experience with electronic pricing, quoting, RFQ or execution systems.
• Experience with FIX, market connectivity or financial messaging protocols.
• Strong understanding of distributed, event-driven, and real-time systems.
• Linux and production engineering experience.
• Ability to troubleshoot complex trading and integration issues.
• Experience partnering directly with traders, quants and technology stakeholders.

Responsibilities

• Designing, developing and supporting electronic Fixed Income trading solutions.
• Building high-performance pricing and execution services.
• Developing RFQ, quoting, pricing and execution workflows.
• Integrating trading platforms with venues, market data providers and internal systems.
• Developing and maintaining connectivity using FIX and other financial messaging protocols.
• Supporting ION-based trading components and integrations.
• Diagnosing production issues across latency-sensitive environments.
• Contributing to technical design and platform modernisation.

Skills

Java

C++

Electronic trading systems

Distributed systems

Linux

Production engineering

Troubleshooting

Stakeholder collaboration

Low-latency architecture

Tools

FIX protocol

ION trading tech

Bloomberg tech

KDB+/Q

Trading platforms integration

Job description

Westpac in Sydney is seeking an Electronic Fixed Income (eFI) Senior Engineer to design, develop and support its electronic trading capabilities across Fixed Income markets.

You will partner with traders, quants and technology teams to deliver scalable, low-latency pricing, RFQ and execution workflows, and reliable market connectivity.

The role focuses on modernising the eFI platform, integrating venues and data sources, and maintaining robust real-time trading services.