Senior Infrastructure Engineer

The Opportunity

Access4 is looking for a Senior Infrastructure Engineer to help keep our backend environments rock solid. This is a hands-on role at the centre of our platform's reliability, if you take pride in delivering 99.999% uptime on critical systems and love being the person the team turns to for the hard infrastructure problems, we'd love to hear from you.

What You'll Be Doing

• Perform daily maintenance and upkeep of backend systems
• Drive continuous improvements and innovations to strengthen system resilience
• Act as the go-to Subject Matter Expert (SME) for the engineering team and wider Access4 organisation
• Contribute to engineering and R&D initiatives that support the company's strategic goals
• Serve as an on-call contact for after-hours events and system emergencies
• Stay calm and solution-focused under pressure, ensuring stability and continuity of critical systems
• Bring a disciplined, organised approach to both day-to-day tasks and long-term projects

What You'll Bring

Must-haves:

• Bachelor's degree in IT or a related field
• Full working rights in Australia (no sponsorship available)
• 5+ years' experience in Linux administration, including kernel and module-level expertise
• 5+ years' experience managing on-premises environments
• 3+ years' experience with Docker or other containerisation technologies
• 3+ years' experience with Ansible or similar automation tools
• 3+ years' experience developing in Python
• 3+ years' experience with virtualisation technologies
• Strong knowledge of TCP/IP network stacks and monitoring systems
• Excellent problem-solving and analytical abilities, with strong written and verbal communication skills

Nice-to-haves:

• Additional programming languages beyond Python
• Experience with database administration (MySQL, PostgreSQL or similar)
• Knowledge of VoIP technologies (SIP)

About Access4

Founded in 2016, Access4 started with a vision to bring unified communications to the MSP market; an automated, singular platform to sell, provision and invoice customers. Today, this platform is known as SASBOSS® and sets the benchmark as an industry standard in middleware to help deliver best of breed vendors and end-to-end partner enablement for service providers.

We live and breathe our slogan of Innovate, Empower and Partner, which represents our commitment to the channel community and drives the growth of the business. As a team, we embrace genuine conversations, a high performing culture and alignment between all areas of the business. We're also actively working to build a more diverse team, and would love to see more women in tech and telco apply for this role.

Why Join Us?

• Be part of a fast-growing UCaaS leader in Australia & NZ, working with critical infrastructure at scale
• Take real ownership of the systems that keep our partners and customers running
• Enjoy autonomy and trust to solve problems your way
• Solve genuinely complex infrastructure problems and grow your technical depth
• A supportive, down-to-earth culture across multiple regions
• Hybrid working out of a modern Richmond office
• Regular team events, EOFY and Christmas parties plus more
• Employee Assistance Program (EAP)

Apply Now

If you're ready to be the backbone of Access4's infrastructure and keep our platform running at its best, we'd love to hear from you.

👉 Apply today with your CV and a cover letter outlining your suitability for the role.

Agencies need not apply.