Windows Systems Administrator and Vulnerability Management Coordinator

Guidehouse Inc.; Kansas City (MO); On-site; USD 110,000 - 150,000; Full time

Job summary

Guidehouse Inc. seeks a Senior Windows Server Administrator to maintain and secure enterprise Windows Server environments across on-premises, VMware, and cloud platforms.

You will implement patching, monitor performance, manage AD/DNS/DHCP, and support migrations to Azure, while leveraging PowerShell and Ansible to automate tasks. Candidates must have 6+ years' experience and be eligible for Public Trust clearance.

Qualifications

• 6+ years of engineering-level Windows Server experience in enterprise data centers.
• Experience deploying and managing Windows workloads in Azure and hybrid cloud environments.
• Experience with VMware-based infrastructure and vSphere.
• Strong PowerShell scripting and infrastructure automation.
• Experience with ITIL-based service management processes.
• Ability to communicate technical concepts to both technical and non-technical audiences.

Responsibilities

• Install, configure, patch, monitor, and maintain Windows Server OS across physical, virtual, and cloud environments.
• Manage AD, DNS, DHCP, and Group Policy in hybrid environments.
• Support on-premises VMware vSphere workloads and assist migrations to Azure.
• Use cloud monitoring and security tools to maintain system health and compliance.
• Automate tasks with PowerShell and Ansible; maintain GitLab repositories.
• Provide 24x7 on-call support and document changes using ITSM tools.

Skills

Windows Server

Azure

VMware vSphere

PowerShell

Ansible

GitLab

Cybersecurity

ITIL

Tools

Azure Monitor

Defender for Cloud

Active Directory

DNS/DHCP

Carbon Black

CyberArk

Remedy

ServiceNow

Job description

Job Family : IT Cyber Security

Travel Required : None

Clearance Required : Ability to Obtain Public Trust

What You Will Do:

• Install, configure, patch, monitor, back up, and maintain Windows Server operating systems across physical, virtual, and cloud-hosted environments.
• Manage file systems and storage using volume management techniques; monitor and optimize file system performance.
• Monitor system performance, capacity, and availability while performing operating system tuning and optimization.
• Support on-premises VMware vSphere workloads and assist with workload migration and transition into Microsoft Azure.
• Manage Windows Server environments hosted in Azure and other cloud platforms.
• Utilize cloud-native tools such as Azure Monitor, Azure Update Management, and Defender for Cloud to maintain system health, performance, and compliance.
• Configure and maintain Active Directory, DNS, DHCP, Group Policy, and related Windows services across hybrid environments.
• Harden systems in accordance with cybersecurity policies, standards, regulations, and accreditation requirements.
• Identify, remediate, and resolve operating system security vulnerabilities.
• Manage domain user accounts, permissions, and role assignments.
• Troubleshoot and resolve Tier 3 incidents and service requests while coordinating with customers and vendors as needed.
• Automate administrative and operational tasks using PowerShell, Ansible, and related automation tools.
• Maintain enterprise source code and configuration repositories using GitLab.
• Provide 24x7 operational support and participate in on-call activities as required.
• Document system changes, incidents, and problem resolutions using Configuration Management and ITSM tools.
• Develop and provide knowledge transfer documentation to support operational continuity.
• Participate in Agile and DevSecOps initiatives supporting infrastructure and platform services.
• Support Windows Server 2016, 2019, and 2022 environments across VMware, Azure, AWS, and GCP platforms.
• Administer and support technologies including Azure VMware Solution (AVS), VMware vSphere, PowerShell, Ansible, GitLab, Carbon Black, CyberArk, Defender, Remedy, and ServiceNow.

What You Will Need:

• Minimum of SIX (6)+ years of overall work experience.
• Engineering-level experience supporting Microsoft Windows Server in enterprise data center environments.
• Experience managing Windows workloads in Microsoft Azure, including hybrid cloud environments and workload migrations.
• Experience supporting VMware-based infrastructure and virtualization platforms.
• Demonstrated ability to lead troubleshooting, root cause analysis, and resolution efforts for complex technical issues.
• Experience collaborating with technical and business stakeholders to deliver operational solutions.
• Experience with Ansible.
• Strong experience with PowerShell scripting and infrastructure automation.
• Experience using automation tools, with Ansible preferred.
• Experience supporting and maintaining Active Directory, DNS, DHCP, Group Policy, and other core Windows services.
• Working knowledge of cloud monitoring, security, and compliance tools.
• Strong written and verbal communication skills in English.
• Exceptional customer service and client support capabilities.
• Strong organizational, multitasking, time-management, and prioritization skills.
• Ability to communicate technical concepts effectively to both technical and non-technical audiences.
• Experience operating within ITIL-based service management environments.
• Ability to work both independently and collaboratively in a fast-paced environment.
• Willingness to participate in 24x7 support activities and occasional on-site response requirements.
• U.S. Citizenship is required in accordance with this contract. No visa or sponsorship eligibility offered
• Must be able to OBTAIN and MAINTAIN a Federal "PUBLIC TRUST".. Candidates with an ACTIVE PUBLIC TRUST or SUITABILITY are preferred.

What Would Be Nice To Have:

• Experience with Azure VMware Solution (AVS) or similar hybrid cloud hosting models.
• Experience supporting cloud platforms beyond Azure, including AWS and Google Cloud Platform (GCP).
• Hands-on experience with cybersecurity tools such as Carbon Black, CyberArk, Microsoft Defender, and related security technologies.
• Experience with GitLab-based source code and configuration management practices.
• Familiarity with Agile delivery methodologies and DevSecOps practices.
• Experience with ITSM platforms including ServiceNow and Remedy.
• Knowledge of security accreditation, compliance, and system hardening processes within federal environments.
• Experience participating in enterprise cloud modernization or migration initiatives.
• Microsoft, Azure, VMware, ITIL, Security, or automation-related certifications.

What We Offer:

Guidehouse offers a comprehensive, total rewards package that includes competitive compensation and a flexible benefits package tha