Senior Systems Engineer

Every day, millions of Australians connect, work, stream, and stay in touch on the Optus network. When it works seamlessly, it’s easy to take for granted. But behind it is a team making thousands of decisions every day - decisions that keep people, businesses and communities connected.

Right now, Optus is focused on getting the fundamentals right - simplifying how we work, lifting standards, and building a more reliable, resilient experience for our customers.

It’s not about surface-level change. It’s about how we make decisions, how we work together, and how we deliver.

As a Senior Systems Engineer, you will have a high level of technical expertise to support Optus in meeting a range of regulatory obligations. The role also requires strong stakeholder management skills, as the Senior Systems Engineer will regularly meet with representatives from government agencies, vendors and internal teams.

You will be responsible for supporting innovative technical solutions to address customer requirements and government initiatives through the solution’s life cycle.

The Day to Day

• Assist team members in delivering end-to-end solutions across the technology lifecycle, from development through to operations
• Contribute to highly available, secure, and scalable systems, maintaining reliability of critical regulatory platforms
• Partner with internal teams and external stakeholders, including government and law enforcement agencies, to support solution delivery and operations
• Participate in security risk assessments and help maintain security architecture in regulated environments
• Support continuous improvement through modern engineering practices, automation, and evolving technologies.

What You Bring

• Due to the nature of this role, you must be an Australian Citizen who holds (or be eligible to obtain) an Australian Government security clearance
• Experience in full stack, end to end, systems design and engineering, including infrastructure build and operate
• Strong Linux experience is essential
• Virtualization (Proxmox) and Kubernetes (Rancher) experience
• Software development using:
• Go (essential)
• Rust (familiarity, desire to develop the skillset is essential)
• Python (desired, not essential)
• Gitlab CICD and SDLC
• Experience leveraging modern cloud native designs, tooling and patterns in an entirely on-premises environment. E.g. Terraform, Ansible, Packer etc
• Datacenter experience including the installation and maintenance of server, network and storage equipment
• Strong communication and stakeholder engagement skills
• Relevant tertiary qualifications in Computer Science/Engineering; cybersecurity certifications are an advantage

The good stuff

• Competitive remuneration and colleague discounts. Make life easier (and more affordable) with $80 monthly credit and 25% off Optus products and outstanding shopping discounts with our retail partners.
• Flexible working arrangements with opportunities to work three days in the office, two days remote or home.
• Vibrant and collaborative office campus that includes cafes, convenience store, chill out zones, GP, post office, gym, and on-site childcare centre.
• Competitive leave policies, including additional 'Connected’ days to focus on culture, family, health, community, or whatever’s important to you.
• We support growing families with inclusive, carer-neutral paid Parental Leave of up to 16 weeks.
• Build meaningful connections through colleague-led networks and diversity initiatives including Culture Connect, Elevate Women, Disability Network, and Express Yourself (LGBTQIA+).
• Put your wellbeing first with free access to counselling and support services, 24/7 — in-person, by phone, SMS, or video.
• Free Optus bus from Macquarie University Metro Station (every 6-8 minutes); morning and afternoon. Join us for an outstanding career opportunity!

Not every box ticked? Apply anyway. We believe the right mindset matter more than a perfect CV. We’ll back you to grow from there.

At Optus, we are strengthened by others and that means valuing diversity and saying ‘yes’ to embracing individual differences. We are committed to ensuring that our application process provides an equal employment opportunity to all job seekers, including individuals from diverse gender, cultural and linguistic backgrounds, individuals with a disability, individuals identifying as being part of the LGBTQIA+ community, individuals who may have served in the armed forces or who identify as Aboriginal and/or Torres Strait Islander. We also want to do our best to make our recruitment process inclusive. If you require any adjustments or accessibility support to participate fairly and equitably in the recruitment process, please email [email protected] or call 1800 309 170.

For more information on Diversity, Inclusion & Belonging at Optus, please visit