{"id":2412477,"url":"https://alion.io/job/pm-consulting-senior-windows-administrator","title":"Senior Windows Administrator","company":{"id":4421389,"name":"PM Consulting","domain":"pmconsulting.ph","url":"https://alion.io/company/pmconsulting-2","size_band":"1001-5000","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Manatal","truth_index":null},"role":"DevOps","role_family":"DevOps","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Makati, Philippines"],"countries":["PH"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":10500,"max_usd":29000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":3299},"experience_years_min":7,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Active Directory","optional":false},{"name":"Azure","optional":false},{"name":"Azure DevOps","optional":false},{"name":"CAPA","optional":false},{"name":"CI/CD","optional":false},{"name":"DHCP","optional":false},{"name":"DLP","optional":false},{"name":"DNS","optional":false},{"name":"GitHub","optional":false},{"name":"Least Privilege","optional":false},{"name":"Linux","optional":false},{"name":"Microsoft Defender","optional":false},{"name":"Microsoft Entra ID","optional":false},{"name":"Microsoft Sentinel","optional":false},{"name":"PKI","optional":false},{"name":"Platform Engineering","optional":false},{"name":"Unix","optional":false},{"name":"Windows","optional":false},{"name":"Windows Server","optional":false},{"name":"Zero Trust","optional":false},{"name":"CIS Benchmarks","optional":true},{"name":"Docker","optional":true},{"name":"ITIL","optional":true},{"name":"Kubernetes","optional":true},{"name":"NIST CSF","optional":true}],"status":"live","first_seen_at":"2026-10-13T02:26:03Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-10-23T19:47:00Z","board_verified":true,"closed_at":null,"days_open":10,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":10},"description":"Role Overview\nWe are looking for a Senior Windows Administrator responsible for the design, administration, security, and day-to-day operation of enterprise Windows infrastructure and Microsoft-based platforms.\nThe role has a strong focus on Windows Server, Active Directory, Microsoft Entra ID, endpoint management, Microsoft 365, server hosting, patching, backup, monitoring, and infrastructure operations, while also contributing to Azure, identity security, automation, and hybrid infrastructure initiatives.\nThis is a hands-on senior infrastructure role requiring someone who can independently manage the organization's server fleet and directory services, maintain secure and resilient infrastructure, troubleshoot complex issues, and contribute to infrastructure improvements and technology initiatives.\n\nKey Responsibilities\nWindows Server & Infrastructure Administration\nAdminister, maintain, and support enterprise Windows Server environments across physical, virtualized, and hosted platforms.\nManage the day-to-day operation, availability, performance, and reliability of Windows infrastructure.\nPerform server provisioning, configuration, hardening, patching, maintenance, and lifecycle activities.\nMaintain secure baseline configurations for Windows servers and endpoints.\nManage server logging, monitoring, capacity, and performance.\nTroubleshoot complex Windows infrastructure issues and perform root-cause analysis.\nSupport hosting and virtualization environments and associated infrastructure platforms.\nContribute to disaster recovery and business continuity activities, including RPO/RTO planning and testing.\nActive Directory & Microsoft Entra ID\nAdminister and maintain Active Directory and Microsoft Entra ID environments.\nSupport hybrid identity architecture and synchronization between on-premises and cloud environments.\nManage users, groups, organizational structures, authentication, and access controls.\nImplement and maintain Conditional Access policies and identity security controls.\nSupport enterprise Single Sign-On (SSO) using protocols such as OAuth and SAML.\nManage privileged access using PAM, PIM, and Just-in-Time (JIT) access models.\nApply least-privilege and Zero Trust principles across identity and access management.\nManage Microsoft Entra enterprise applications, app registrations, permissions, and consent.\nEndpoint & Device Management\nManage the enterprise Standard Operating Environment (SOE) for Windows devices.\nAdminister endpoint configurations, local administrator access, and security baselines.\nImplement and maintain LAPS and secure endpoint administration practices.\nManage device lifecycle and endpoint configuration using Microsoft Intune.\nAdminister Windows Autopilot for device provisioning and deployment.\nSupport endpoint compliance, configuration, patching, and security management.\nTroubleshoot endpoint and device management issues across the organization.\nMicrosoft 365 Administration\nAdminister and support Microsoft 365 services and associated workloads.\nSupport identity, access, security, configuration, and operational requirements across Microsoft 365.\nTroubleshoot Microsoft 365 service and user access issues.\nSupport integration between Microsoft 365, Entra ID, endpoint management, and enterprise applications.\nAzure Infrastructure & Platform Support\nSupport Azure infrastructure and platform services within a hybrid enterprise environment.\nWork with Azure networking components including:\nVirtual Networks\nHub-and-Spoke architectures\nLanding Zones\nNetwork Security Groups (NSGs)\nApplication Security Groups (ASGs)\nUser Defined Routes (UDRs)\nVNet peering\nTrust-zone segmentation\nSupport Azure Virtual Desktop (AVD) environments and associated access and security controls.\nContribute to cloud infrastructure design, implementation, resilience, and cost optimization.\nApply infrastructure standards and best practices to Azure environments.\nInfrastructure Security\nImplement secure infrastructure configurations across servers, endpoints, identity, and cloud environments.\nApply Zero Trust principles across identity, devices, networks, and applications.\nSupport Microsoft security platforms including:\nMicrosoft Defender\nMicrosoft Sentinel\nMicrosoft Purview\nAzure security services\nSupport endpoint detection and response (EDR) operations and remediation activities.\nImplement and maintain information protection and DLP controls.\nSupport security hardening based on recognized security standards and benchmarks.\nAssist with infrastructure and security incident response and remediation.\nCore Infrastructure Services\nAdminister and support core infrastructure services including:\nDNS\nNTP\nDHCP and related infrastructure services where applicable\nServer patching\nLogging\nMonitoring\nSupport firewalls, cloud proxy, SASE/CASB, and related infrastructure security controls.\nManage certificate lifecycle and PKI services for internal and external infrastructure.\nTroubleshoot connectivity, authentication, certificate, and infrastructure service issues.\nAutomation & Infrastructure as Code\nIdentify repetitive infrastructure and operational activities that can be automated.\nDevelop and maintain automation for server, endpoint, identity, and operational tasks.\nSupport Infrastructure as Code (IaC) practices to standardize infrastructure deployment and configuration.\nWork with automation and scripting technologies appropriate to the Microsoft infrastructure environment.\nSupport CI/CD and infrastructure automation using GitHub and/or Azure DevOps.\nHybrid Infrastructure & Platform Operations\nSupport Windows and UNIX/Linux environments within a hybrid infrastructure landscape.\nAdminister virtualization platforms and containerized workloads.\nSupport infrastructure integrations across on-premises and cloud environments.\nMaintain operational documentation, standard operating procedures, infrastructure configurations, and technical designs.\nContribute to infrastructure technology evaluations and recommendations.\nIncident, Problem & Operational Management\nProvide proactive and reactive response to infrastructure and security incidents.\nInvestigate and resolve complex infrastructure problems.\nManage escalations and coordinate with internal teams, vendors, and technology partners.\nParticipate in an on-call or escalation roster, where required.\nPerform root-cause analysis and implement corrective and preventive actions.\nWork within established IT service management and operational processes.\nInfrastructure Architecture & Continuous Improvement\nContribute to infrastructure architecture and technology roadmap activities.\nEvaluate existing infrastructure solutions and recommend improvements.\nIdentify opportunities to improve resilience, security, performance, automation, and cost efficiency.\nContribute to infrastructure standards, technical designs, and secure architecture decisions.\nEnsure infrastructure solutions follow appropriate industry practices and organizational standards.\nRequired Qualifications & Experience\n7+ years of hands-on experience in Windows Infrastructure, Systems Administration, Systems Engineering, Infrastructure Engineering, or Cloud Platform Engineering.\nStrong hands-on experience administering Windows Server environments.\nStrong expertise in Active Directory and Microsoft Entra ID.\nExperience with hybrid identity environments and enterprise authentication.\nHands-on experience with Conditional Access and SSO, including OAuth and/or SAML.\nExperience managing privileged access using PAM, PIM, and/or JIT models.\nExperience managing Windows endpoint environments, including SOE and local administrator controls.\nHands-on experience with Microsoft Intune and Windows Autopilot.\nExperience with LAPS and secure endpoint administration.\nExperience with Microsoft 365 administration.\nExperience with server patching, logging, monitoring, and infrastructure operations.\nExperience with Azure infrastructure and networking.\nExperience administering or supporting Azure Virtual Desktop (AVD).\nExperience with virtualization and/or hosting environments.\nExperience with infrastructure automation and/or Infrastructure as Code.\nExperience with certificate management and PKI.\nWorking knowledge of UNIX/Linux administration alongside Windows infrastructure.\nStrong troubleshooting, analytical, and problem-solving skills.\nStrong stakeholder communication and collaboration skills.\nAbility to work independently and manage infrastructure responsibilities with minimal supervision.\nWillingness to participate in on-call/escalation support when required.\nStrongly Preferred Experience\nExperience with Microsoft Defender, Microsoft Sentinel, and Microsoft Purview.\nExperience with DLP and information protection controls.\nExperience applying Zero Trust principles across identity, endpoint, network, and application layers.\nExperience with Azure Landing Zones and Hub-and-Spoke architecture.\nExperience with NSGs, ASGs, UDRs, VNet peering, and network segmentation.\nExperience with Graph API and Microsoft Entra application registrations.\nExperience with enterprise application permissions and consent management.\nExperience with GitHub and Azure DevOps.\nExperience supporting CI/CD and infrastructure automation.\nExperience with Docker, Kubernetes, or containerized workloads.\nExperience with EDR, cloud proxy, SASE, or CASB technologies.\nExperience with firewalls and network security controls.\nExperience with disaster recovery and business continuity planning.\nExperience defining or supporting RPO/RTO requirements.\nExperience working under ITIL practices.\nFamiliarity with Azure Well-Architected Framework, NIST CSF, and CIS Benchmarks.\nExposure to OCI or other cloud platforms.\nTechnology & Tools\nMicrosoft / Windows\nWindows Server\nActive Directory\nMicrosoft Entra ID\nMicrosoft 365\nMicrosoft Intune\nWindows Autopilot\nLAPS\nAzure Virtual Desktop\nMicrosoft Graph\nAzure\nAzure Virtual Networks\nHub & Spoke\nAzure Landing Zones\nNSG / ASG\nUDR\nVNet Peering\nAzure Security Services\nSecurity & Identity\nMicrosoft Defender\nMicrosoft Sentinel\nMicrosoft Purview\nConditional Access\nPAM / PIM / JIT\nSSO\nOAuth\nSAML\nDLP\nPKI / Certificate Management\nEDR\nZero Trust\nInfrastructure\nDNS\nNTP\nPatching\nLogging & Monitoring\nVirtualization\nHosting Platforms\nWindows / UNIX / Linux\nContainers / Kubernetes\nDevOps & Automation\nInfrastructure as Code\nGitHub\nAzure DevOps\nCI/CD\nAutomation / Scripting\nApplicable Certifications\nOne or more of the following certifications is preferred:\nMicrosoft Certified: Azure Solutions Architect Expert (AZ-305)\nMicrosoft Certified: Azure Administrator Associate (AZ-104)\nMicrosoft Certified: Azure Fundamentals\nMicrosoft Certified: Security, Compliance, and Identity Fundamentals\nMicrosoft Certified: Identity and Access Administrator Associate\nMicrosoft Certified: DevOps Engineer Expert\nMicrosoft Certified: Cybersecurity Architect Expert\nKey Competencies\nWindows Server Administration\nActive Directory Administration\nMicrosoft Entra ID\nHybrid Identity\nEndpoint Management\nIntune & Autopilot\nMicrosoft 365 Administration\nAzure Infrastructure\nInfrastructure Security\nZero Trust\nServer & Endpoint Hardening\nInfrastructure Automation\nInfrastructure as Code\nPKI & Certificate Management\nVirtualization & Hosting\nIncident & Problem Management\nDisaster Recovery / Business Continuity\nInfrastructure Architecture\nTechnical Troubleshooting\nVendor Management\nStakeholder 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