Windows Systems Administrator – TS/SCI | Onsite Arlington

TDI (Tetrad Digital Integrity); Arlington (VA); On-site; USD 95,000 - 135,000; Full time

Job summary

Tetrad Digital Integrity (TDI) seeks a Windows Systems Administrator to join the CESO effort in Arlington, VA. The role requires an active TS/SCI clearance and onsite work five days a week.

You will manage Windows/Linux server environments, implement security hardening, and coordinate with network teams to maintain a secure, highly available enterprise system. Responsibilities include creating SOPs, enforcing policies, evaluating hardware/software, guiding junior staff, and ensuring smooth

Qualifications

• Active TS/SCI security clearance required.
• DoD 8750 IAT II certification (e.g., Security+ CE) required.
• Bachelor's degree plus 4+ years of Windows or Linux server experience; additional experience may replace degree.
• VMware administration including config, maintenance, and troubleshooting.
• Windows infrastructure administration (RDS, AD, GPO, Local Security Policies, Task Scheduler).
• PowerShell scripting and automation; Python experience welcomed.
• System/app administration including hardware/software install, config, maintenance, and troubleshooting.
• Security hardening and compliance including DISA STIGs and SCAP scanning.

Responsibilities

• Create, maintain, and implement detailed SOPs across the enterprise.
• Develop, implement, and monitor policies for resource allocation.
• Analyze hardware/software from vendors and recommend cost-effective solutions.
• Review work performed by lower-level technical staff.
• Collaborate with network admins to ensure smooth operation of a multi-user system.

Skills

Windows server administration

PowerShell scripting

Python scripting

Security hardening & DISA STIGs

Active Directory & GPO

RDS & Windows infrastructure

Documentation & SOPs

Vendor evaluation & procurement

Education

Bachelor's degree

DoD 8750 IAT II certification (e.g., Security+ CE)

Tools

VMware

BMC Remedy

Job description

Tetrad Digital Integrity (TDI) seeks a Windows Systems Administrator to join the CESO effort in Arlington, VA. The role requires an active TS/SCI clearance and onsite work five days a week.

You will manage Windows/Linux server environments, implement security hardening, and coordinate with network teams to maintain a secure, highly available enterprise system. Responsibilities include creating SOPs, enforcing policies, evaluating hardware/software, guiding junior staff, and ensuring smooth