Senior Principal Software Engineer

We’re working with a leading Australian technology team behind one of the country’s largest and most complex supply chain platforms, operating at massive scale and supporting millions of users.

This is a genuinely career defining Principal Engineer role. You will sit at the centre of how major platforms evolve. You will help define and guide technical direction across critical systems. You will drive engineering quality. You will also introduce new ideas that improve how large scale distributed systems are built and operated.

You will have real influence across flagship systems that matter, working closely with senior engineering leaders and multiple squads to solve complex, high impact technical challenges. You will be supported by strong engineering leadership and experienced teams across architecture, platform, and security, giving you the backing to make a impact from the beginning.

This is a role where your decisions will directly shape performance, reliability, scalability, and the future direction of core platforms.

What you will be doing

Driving technical direction across high scale distributed systems

Leading cloud native architecture and modern engineering approaches

Working across squads to unblock delivery and solve complex technical problems

Designing and reviewing scalable solutions across core platforms

Building and validating proof of concepts before wider adoption

Partnering with Engineering, Platform, and Security teams to align delivery

Helping shape engineering standards and ways of working

Influencing without formal authority across multiple teams

What they are looking for

Strong backend engineering background with deep .NET experience

Experience in high traffic or enterprise-scale environments

Strong cloud experience

Microservices and Event-Driven Architecture experience

Strong understanding of distributed systems and modern engineering principles

Strong communicator able to influence senior stakeholders

Why this role

This role sits at the heart of one of Australia’s most important supply chain systems, powering large scale national operations used by millions every day.

It is a chance to work on genuinely complex problems, introduce new ideas, and help shape how modern platforms are built and operated at scale.

There is strong hybrid flexibility, time in a modern Sydney CBD office, excellent benefits, and a culture that values engineering quality, ownership, and long term thinking.

If you are looking for a role with real impact, real scale, and real influence, this is exactly that.

Interviews are taking place now, so APPLY ASAP with your CV and the team will be in touch.