Senior C++ Software Engineer

Westbury Partners; Sydney; On-site; AUD 200,000 - 280,000; Full time

Job summary

Westbury Partners is expanding its Sydney office, a world-class APAC technology hub focused on electronic trading. You will join a skilled engineering team building real-time trading systems where performance and speed are critical.

You’ll design and develop high-performance C++ systems at the heart of the trading infrastructure, collaborating across traders, quants, and engineers to deliver production-ready solutions with robust reliability.

Qualifications

• Deep C++ expertise and performance-focused software design.
• Experience with real-time, latency-sensitive systems.
• Background in trading, finance, or other high-performance environments.

Responsibilities

• Building and optimizing latency-critical trading and market connectivity applications (latency-first mindset).
• Developing scalable tools and automation that enhance trading workflows.
• Partnering with traders, quant researchers and engineers to deliver impactful solutions.
• Translating business requirements into robust, production-ready systems.
• Driving system performance, reliability and scalability across the trading stack.
• Investigating and resolving complex production and performance issues.
• Contributing to the design and delivery of next-generation trading technology.

Skills

C++

Job description

Join one of the industry's most sophisticated High Frequency Trading firms as they continue to expand their Sydney office, a world-class APAC technology hub at the forefront of electronic trading. This is an opportunity to work on systems where performance is paramount, innovation is constant, and every microsecond matters.

You’ll be part of a highly talented engineering team building the technology that powers real-time trading across global markets. From market connectivity to execution systems and high-volume data processing, your work will directly impact trading performance and business outcomes.

What You’ll Be Doing

As a key contributor to the engineering team, you’ll design and develop high-performance C++ systems that sit at the heart of the firm’s trading infrastructure. Working in a fast-paced, collaborative environment, you’ll have the autonomy to solve complex technical challenges and drive meaningful improvements.

Key responsibilities include:

• Building and optimising latency‑critical trading and market connectivity applications

• Developing scalable tools and automation that enhance trading workflows

• Partnering closely with traders, quant researchers, and engineers to deliver impactful solutions

• Translating business requirements into robust, production‑ready systems

• Driving system performance, reliability, and scalability across the trading stack

• Investigating and resolving complex production and performance issues

• Contributing to the design and delivery of next‑generation trading technology

Why This Opportunity?

• Build technology that operates at market speed and handles enormous volumes of real-time data

• Work on mission‑critical systems that directly influence trading outcomes

• Shape and deliver greenfield projects with significant technical ownership

• Collaborate with some of the brightest minds in trading and technology

• Join a culture that empowers engineers, values innovation, and rewards impact

• Gain exposure to cutting‑edge infrastructure, low‑latency systems, and global markets

About You

You’re a passionate engineer who thrives on solving complex problems and pushing systems to their limits. You bring deep C++ expertise, strong systems thinking, and a desire to build software where performance truly matters.

Whether you’ve worked in trading, finance, or another performance‑sensitive environment, you’ll be excited by the challenge of engineering technology at the cutting edge of speed and scale.

If you’re looking for an environment where ownership is real, technical excellence is expected, and your work directly drives competitive advantage, we’d love to hear from you.