Systems Administrator - Windows (Senior)

As a Senior Windows Systems Administrator, you will lead the design, administration, and modernization of enterprise Windows infrastructure. You will provide technical leadership across Active Directory, Microsoft Exchange, VMware, security hardening, automation, and compliance while driving major infrastructure initiatives, resolving complex issues, and mentoring junior and mid-level administrators.

• Lead the design, administration, and modernization of enterprise Windows infrastructure.
• Architect and maintain Active Directory, DNS, DHCP, Group Policy, and identity services.
• Design, implement, and support Microsoft Exchange and Microsoft 365 environments.
• Lead VMware, virtual desktop, endpoint, and Windows Server infrastructure operations.
• Drive security hardening, patch management, vulnerability remediation, and privileged access practices.
• Develop PowerShell automation for large-scale administration, compliance, and reporting.
• Own Windows Server STIG compliance and support NIST 800-53 audit and assessment activities.
• Lead troubleshooting of complex infrastructure and security incidents.
• Provide technical direction, documentation, and mentorship to junior and mid-level administrators.
• Support architecture decisions, upgrades, migrations, and infrastructure modernization initiatives.
• Participate in and provide escalation support for the on-call rotation.

• 7 to 10+ years of Windows infrastructure and systems administration experience.
• Advanced expertise in Active Directory, Group Policy, DNS, DHCP, and Windows Server.
• Strong PowerShell automation and scripting experience.
• Experience designing and supporting enterprise Microsoft and VMware environments.
• Strong knowledge of STIGs, vulnerability remediation, patching, and security controls.
• Experience leading infrastructure projects and mentoring technical staff.
• Bachelor's degree or equivalent combination of experience and specialized training.
• For cleared roles, active Secret clearance and applicable citizenship requirements.

• Microsoft Certified: Windows Server Hybrid Administrator Associate.
• Identity and Access Administrator Associate.
• Azure Security Engineer Associate.
• Microsoft 365 Enterprise Administrator Expert.
• Advanced MECM/SCCM, WSUS, Certificate Services, PKI, and imaging experience.
• CompTIA Security+ CE.

• A direct line to the hiring team. BLUU KAZI presents your profile in person, so your application never disappears into a portal.
• Coaching at every stage. Interview preparation, feedback after each round and support through the offer.
• Room to grow. Access to BLUU KAZI training and certification paths in cybersecurity, cloud and AI.
• A bench that works for you. Join our network of emerging and veteran technologists and hear first about roles that fit.