Senior Infrastructure Engineer

The Role

The Senior Infrastructure Engineer plays a critical role in managing and maintaining Access4’s backend environments. The primary goal of this role is to ensure 99.999% system uptime while driving continuous improvement across all system functions and components.

Key Responsibilities

• Perform daily maintenance and upkeep of backend systems.
• Drive constant improvements and innovations to strengthen system resilience.
• Act as a Subject Matter Expert (SME) to the engineering team and wider Access4 organisation, providing expert advice and solutions.
• Contribute to the engineering and R&D functions to support the company’s strategic goals.
• Serve as the on-call contact for after-hours events and system emergencies.

About You

You are a proactive professional with a genuine passion for solving complex infrastructure challenges. You thrive in a collaborative environment, where sharing knowledge and supporting your team is second nature.

In high-pressure situations, you remain calm, focused, and solution-oriented, ensuring stability and continuity in critical systems. You bring strong organisational skills and a disciplined approach to managing both day-to-day tasks and long-term projects, consistently delivering high-quality outcomes.

Qualifications & Experience

• 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 (additional programming languages highly regarded).
• 3+ years’ experience with virtualisation technologies.
• Strong knowledge of TCP/IP network stacks and monitoring systems.
• Experience with database administration (MySQL, PostgreSQL, or similar) preferred.
• Knowledge of VoIP technologies (SIP) desirable.
• Excellent problem-solving and analytical abilities.
• Strong written and verbal communication skills.
• Organised, methodical, and disciplined approach to operations and project delivery.
• Proficiency in the tools and technologies listed above.

Attributes

• Proactive mindset with a passion for solving complex problems.
• Collaborative and knowledge-sharing approach to teamwork.
• Calm and effective under pressure.
• Highly organised and disciplined in managing projects and tasks.

About Access4

Access4 is a leading global provider of unified communications and SaaS solutions, empowering our partners and customers across multiple regions with innovative, scalable, and secure technology. Our award-winning SASBOSS™ platform is at the core of what we do — enabling growth, efficiency, and exceptional experiences.

As we continue to expand globally, we are seeking a visionary Head of Platform to lead the strategic direction, development, and operational excellence of our platform.

Why Join Us?

At Access4, you’ll play a pivotal role in shaping the future of our global platform. You’ll be part of a dynamic, innovative, and supportive culture, working with talented teams across multiple regions. We’re committed to professional growth, continuous learning, and creating an environment where innovation thrives.

Apply Now

If you’re ready to lead the next chapter of Access4’s platform journey and make a global impact, 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.