Senior Systems Administrator – M365 & Cloud (Hybrid)

Staff Domain, Inc.; Makati; Hybrid; PHP 670,000 - 1,339,000; Full time

Benefits offered by this job

HMO, Dental, and Life Insurance

Paid Leaves

Team Engagement Activities

Job summary

Staff Domain, Inc. in Ortigas is seeking a Senior Systems Administrator to own complex environments with a high degree of autonomy in a modern AI-first service model. The role focuses on stability, optimisation, and long-term quality, with exposure to AI-driven tooling as part of our evolving service delivery.

You will act as the senior escalation point for L2/L3, resolve complex issues, and drive improvements across Microsoft, cloud, and network infrastructure while mentoring junior engineers.

Qualifications

• Senior systems administrator with hands-on experience.
• Experience managing complex network environments in MSP/MSSP settings.
• Strong Microsoft stack expertise: AD, Azure AD, M365, Windows Server.
• Advanced networking: routing, switching, firewalls, VPN, SD-WAN.
• Virtualization: VMware vSphere and Hyper-V.
• Security-focused with practical operational practices.
• Azure and AWS hands-on experience.
• Backup familiarity: Veeam and Metallic.
• Nice-to-have MSSQL or Oracle exposure.

Responsibilities

• Own and resolve complex technical issues end-to-end.
• Take full technical ownership of assigned client environments.
• Provide escalation support and mentorship to juniors.
• Maintain and optimise Microsoft, cloud, and network infrastructure.
• Drive security, performance, and standardisation improvements.
• Contribute to automation and AI-driven operational enhancements.
• Assist with delivery of infrastructure and security projects.

Skills

Senior Systems Administrator

MS Active Directory / Azure AD / M365

Networking: routing, switching, firew/

Security best practices

Azure & AWS environments

Backup: Veeam/Metallic

MSSQL/Oracle exposure

Cloud & virtualization (VMware vSphere

Tools

VMware vSphere

Hyper-V

Job description

Staff Domain, Inc. in Ortigas is seeking a Senior Systems Administrator to own complex environments with a high degree of autonomy in a modern AI-first service model. The role focuses on stability, optimisation, and long-term quality, with exposure to AI-driven tooling as part of our evolving service delivery.

You will act as the senior escalation point for L2/L3, resolve complex issues, and drive improvements across Microsoft, cloud, and network infrastructure while mentoring junior engineers.