Senior Systems Admin – MSSP (L3) | AU | WFH

Job Description Set-up and Location: WFH Work Schedule: 9:00AM to 6:00PM (AEST) | 7:00AM to 4:00PM (PH) Employment Type: Full-time Ready to do work that actually excites you? We are a boutique Managed Security Service Provider focused on delivering secure, well-architected environments for mid to enterprise clients. We operate with a strong engineering mindset, high standards, and a clear direction toward AI-driven operations and automation. We are seeking a Senior Systems Administrator to take ownership of complex environments and operate with a high degree of autonomy within a modern, AI-first service model. You will act as the senior escalation point across L2/L3, responsible for resolving complex issues and maintaining high-performing, secure environments. You will own technical outcomes across your assigned environments, make decisions independently, and drive improvements without relying on constant direction. The role is hands-on, with a focus on stability, optimisation, and long-term quality. You will also gain exposure to AI-driven tooling and automation as part of our evolving service delivery model. Own and resolve complex technical issues end-to-end Take full technical ownership of assigned client environments Provide escalation support and guidance to junior engineers Maintain and optimise Microsoft, cloud, and network infrastructure Drive improvements in security, performance, and standardisation Contribute to automation and AI-driven operational enhancements Assist with delivery of infrastructure and security projects as required Requirements What You Bring We’re looking for someone who: Proven experience in a senior systems administrator or equivalent role Experience managing complex network environments or working within an MSP or MSSP Strong expertise across Microsoft technologies including Active Directory, Azure AD, Microsoft 365, and Windows Server Advanced networking capability across routing, switching, firewalls, VPN, wireless, and SD-WAN Experience with virtualisation platforms including VMware vSphere and Hyper-V Strong understanding of cybersecurity principles and operational practices Hands-on experience with Azure and AWS environments Experience with backup platforms such as Veeam and Metallic Exposure to MSSQL or Oracle is advantageous Benefits Why You’ll Love Working Here HMO, Dental, and Life Insurance for you and one free dependent from day one (with option to enroll more) Paid Leaves: Birthday, Vacation, Medical, and Maternity (up to 6 Vacation Leaves convertible to cash on your anniversary) Employee Engagement Activities: Year-End Party, Family Day, Team Building, and more Let’s Talk If you’re thinking “this sounds like me”—it probably is. Click apply. We can’t wait to meet you.