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

Category: IT Services Location: Ortigas, Alabang, Pampanga, Cebu National Capital Region (Manila) Philippines 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, perfo