Senior Systems Administrator – M365

Staff Domain

. Own and resolve complex technical issues end-to-end .

Posted 11/5/2026full-timeOrtigas • PhilippinesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in managing complex network environments and Microsoft technologies, with a strong focus on security, performance optimization, and automation. Proven ability to provide technical ownership and escalation support while driving operational enhancements in cloud and infrastructure projects.

Highest-signal resume keywords

Senior Systems Administrator ExperienceMicrosoft Technologies ExpertiseAdvanced Networking CapabilityCybersecurity Principles UnderstandingHands-On Experience with Azure and AWS

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Active DirectoryAzure ADMicrosoft 365Windows ServerRoutingSwitchingFirewallsVPNVMware vSphereHyper-V

Soft Skills

Technical OwnershipEscalation SupportGuidance to Junior Engineers

Tools & Technologies

VeeamMetallicSD-WANAWS

Industry Keywords

MSSPMSPCybersecurityInfrastructure ProjectsAutomation

Tech Stack

Tools & technologies

AWSAzureCloudCyber SecurityFirewallsOracleSwitchingVMware

About the role

Key responsibilities & impact

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
Act as the senior escalation point across L2/L3

Requirements

What you’ll need

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

Comp & perks

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
Exposure to AI-driven tooling and automation