Senior Systems Administrator - M365 (MSSP) | WFH | AU

Staff Domain Inc; Pampanga; Hybrid; PHP 1,200,000 - 1,800,000; Full time

Benefits offered by this job

HMO, Dental, Life Insurance

Birthday leave

Paid leaves

Team events

Job summary

Staff Domain Inc is seeking a Senior Systems Administrator in a hybrid Ortigas setup. The role demands ownership of complex environments, autonomy, and hands-on management of security, cloud, and network infra. You will be the senior escalation point for L2/L3 issues and contribute to AI-driven tooling.

The position offers full-time employment with hybrid on-site work and exposure to automation. Strong experience across Microsoft stack, virtualization, and cloud platforms is essential.

Qualifications

• Proven experience in a senior systems administrator or equivalent role.
• Experience managing complex network environments in MSP/MSSP.
• Strong expertise across Microsoft technologies including AD, Azure AD, M365, Windows Server.
• Advanced networking across routing, switching, firewalls, VPN, wireless, SD-WAN.
• Experience with virtualization: VMware vSphere, Hyper-V.
• Hands-on Azure and AWS environments.
• Experience with backup platforms: Veeam, Metallic.
• Exposure to MSSQL or Oracle is advantageous.

Responsibilities

• 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.

Skills

Senior systems administrator

Complex networks

Active Directory

Azure AD

Microsoft 365

Windows Server

Networking (VPN/SD-WAN)

VMware vSphere

Hyper-V

Cybersecurity basics

Azure & AWS

Backup platforms

Tools

Veeam

Metallic

VMware vSphere

Hyper-V

Azure

AWS

SQL Server

Job description

Set-up and Location: HYBRID - Ortigas

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

• 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