Senior Windows Systems Administrator - VMware & Security

The Josef Group; Columbia (MD); On-site; USD 90,000 - 130,000; Full time

Job summary

The Josef Group seeks a senior System Administrator to manage Windows Server environments, AD, and Group Policy, with hands-on Linux experience and VMware expertise. You will support Broadcom virtualization stacks, vCenter, and NetApp storage, while maintaining network and security hygiene across systems.

Strong communication, problem solving, and customer service are essential as you collaborate with cross-functional teams to meet RMF security requirements and operational goals.

Qualifications

• Bachelor’s degree in a technical discipline or 20 years of system admin experience.
• Experience with Windows Server Administration, Active Directory, and Group Policy.
• Familiarity with Linux Server Administration.
• Familiarity with Broadcom VMware/ESXi, Broadcom VMWare Virtual Networking, and Broadcom VMware vCenter.
• Networking Switching and Router Management.
• Storage Management (NetApp).
• Hardware and OS troubleshooting.
• Security Compliance Scanning (Nessus, ACAS).
• Understanding of RMF project design requirements.

Responsibilities

• Administer and maintain Windows Server environments including AD and GPO.
• Lead system administration tasks across Linux servers and virtualization platforms.
• Configure and manage VMware ESXi hosts, vCenter, and related networking layers.
• Monitor security posture using Nessus/ACAS and ensure RMF compliance.
• Provide technical support with strong communication and problem solving.

Skills

Windows Server Admin

Active Directory

Group Policy

Linux Server Admin

VMware ESXi

Networking

Storage NetApp

Security Scanning

RMF Compliance

Customer Service

Education

Bachelor’s degree in a technical discipline

High school diploma + 20 years experience

Tools

PowerCLI

Broadcom VMware Aria Suite

Broadcom VMware Cloud Foundation (VCF)

Job description

The Josef Group seeks a senior System Administrator to manage Windows Server environments, AD, and Group Policy, with hands-on Linux experience and VMware expertise. You will support Broadcom virtualization stacks, vCenter, and NetApp storage, while maintaining network and security hygiene across systems.

Strong communication, problem solving, and customer service are essential as you collaborate with cross-functional teams to meet RMF security requirements and operational goals.