Onsite Windows SysAdmin II – Hybrid Infra & Security

The Marvin Group; Inglewood (CA); On-site; USD 83,000 - 90,000; Full time

Job summary

The Marvin Group, a defense contractor based in Southern California near LAX, seeks a System Administrator II to maintain and support a hybrid infrastructure of on‑prem Windows systems and Microsoft cloud services. You will manage user lifecycles, patching, endpoint configuration, and escalate IT issues to Tier 2/3 while supporting compliance in a CMMC/NIST 800-171 environment.

The role requires hands‑on Windows server administration, Ivanti, Azure AD/Intune, VMware ESXi, and strong scripting

Qualifications

• Experience in enterprise Microsoft Windows system administration.
• Experience in Ivanti Endpoint Manager: OS imaging, patching, remote support, software deployment, and inventory.
• Hands‑on experience with Azure AD, Intune, Exchange Online, and SharePoint Online.
• Solid understanding of Windows Server, IIS, Exchange, DNS, DHCP, Active Directory, Certificate Authority, and Group Policy.
• Experience in deploying and migrating users to Microsoft Office 365 cloud‑based services, including Hybrid Exchange, SharePoint, OneDrive, and Teams.
• Supporting OKTA, Microsoft SQL Server, and Intune.
• Implement and adhere to security controls in accordance with CMMC and NIST SP 800‑171 guidelines.
• Deploying and maintaining virtualized infrastructures using VMware.
• Experience in PowerShell for system administration.
• Excellent communication skills, both written and verbal.
• Capability to manage multiple tasks simultaneously with frequent interruptions and context shifting.

Responsibilities

• Install and maintain Windows Servers, Active Directory, and Microsoft 365.
• Automate configuration with PowerShell, Group Policy, Intune, and Azure policies.
• Manage unified endpoint including imaging, patching, and provisioning.
• Support on-prem VMware ESXi clusters and DR readiness.
• Assist with OKTA, MFA, and YubiKey integration.
• Provide Tier 2/3 escalation and user support.
• Write and maintain Work Instructions.
• Ensure compliance with NIST SP 800‑171 and CMMC.

Skills

Windows admin

PowerShell

Azure AD

Intune

Okta

VMware ESXi

Office 365

Security compliance

Education

Bachelor's degree or higher

5+ years Systems Admin experience

Tools

Ivanti Endpoint Manager

VMware ESXi

Microsoft 365 Admin Center

Job description

The Marvin Group, a defense contractor based in Southern California near LAX, seeks a System Administrator II to maintain and support a hybrid infrastructure of on‑prem Windows systems and Microsoft cloud services. You will manage user lifecycles, patching, endpoint configuration, and escalate IT issues to Tier 2/3 while supporting compliance in a CMMC/NIST 800-171 environment.

The role requires hands‑on Windows server administration, Ivanti, Azure AD/Intune, VMware ESXi, and strong scripting