Senior Secure Systems Engineer: Windows/Linux

FANTOM CORPORATION; McLean (VA); On-site; USD 120,000 - 160,000; Full time

Job summary

Fantom Corporation seeks a Senior Systems Engineer to design, administer, and maintain secure Windows and Linux server environments for enterprise applications. You will manage SQL Server, ADCS, Hyper‑V, and virtualization infrastructure while supporting A&A activities for security‑controlled systems.

The role includes administering Windows Server environments, backup/recovery solutions, and storage systems such as NetApp SANs.

Qualifications

• Must have a current polygraph clearance.
• Willing and able to work fully onsite at the location.
• Demonstrated experience with Windows systems engineering and administration.
• Experience administering: Microsoft SQL Server, Active Directory Certificate Services (ADCS), Hyper‑V virtual environments, virtual machine clusters, Microsoft Data Protection Manager, PowerShell scripting.
• Experience supporting Assessment and Authorization (A&A) processes for security‑controlled systems.
• Experienced in administering Linux operating systems.
• Strong troubleshooting and problem‑solving skills for enterprise infrastructure.
• Experience in secure government or enterprise IT environments.
• Excellent written and verbal communication skills.

Responsibilities

• Design, administer, and maintain secure Windows and Linux server environments supporting enterprise applications.
• Manage SQL Server databases, ADCS, Hyper‑V environments, and enterprise virtualization infrastructure.
• Support A&A activities, including accreditation documentation and compliance requirements.
• Administer Windows Server environments, VM clusters, and backup/recovery solutions.
• Develop and maintain PowerShell automation scripts to improve efficiency.
• Manage enterprise certificate services for users, servers, and service accounts.
• Configure and troubleshoot Windows Group Policy, WSUS, and security settings.
• Administer virtualization platforms including Hyper‑V and VMware.
• Support secure data transfers and safeguard security‑controlled environments.
• Administer and maintain NetApp SANs and storage solutions.
• Collaborate with engineering, cybersecurity, and operations to maintain secure, highly available infrastructure.
• Troubleshoot complex infrastructure, OS, virtualization, and storage issues.
• Develop and maintain technical documentation and operation procedures.
• Cross‑train team members and provide mentorship as needed.
• Support IT program management and enterprise infrastructure initiatives.

Skills

Windows systems engineering

PowerShell scripting

Active Directory

Hyper‑V

VMware

A&A processes

Tools

NetApp SANs

ADCS (Active Directory Certificate Services)

Microsoft SQL Server

Microsoft Data Protection Manager

WSUS

Job description

Fantom Corporation seeks a Senior Systems Engineer to design, administer, and maintain secure Windows and Linux server environments for enterprise applications. You will manage SQL Server, ADCS, Hyper‑V, and virtualization infrastructure while supporting A&A activities for security‑controlled systems.

The role includes administering Windows Server environments, backup/recovery solutions, and storage systems such as NetApp SANs.