Senior Systems Administrator – Top Secret, On-Site

S2i2 Inc; Blue Ridge Summit (PA); On-site; USD 100,000 - 106,000; Full time

Job summary

S2i2 Inc is seeking a Senior Systems Administrator in Fairfield, PA (On-Site) to ensure operational stability, security, and maintenance of server and network systems in the DISA JSP environment.

You will install and configure Windows server OS, manage Active Directory, DNS and DHCP, apply patches, monitor logs, perform backups, and support DIARMF with DoD security standards. This is a hands-on role requiring collaboration with junior staff and night/weekend availability as needed.

Qualifications

• Active Top-Secret Clearance required for role.
• DoD 8140/8570 IAT Level II cert (Security+ CE or higher) required.
• BS in Information Technology or engineering field.
• Minimum 5 years of Windows server administration experience.
• Experience with Active Directory, DNS, DHCP and VMware.
• Experience applying patches and DoD STIG compliance.
• Experience providing enterprise-class workstation/server support.
• Familiarity with DIARMF and DoD security frameworks.
• Ability to work nights/weekends as needed.

Responsibilities

• Perform day-to-day maintenance, backups, audit log reviews, and equipment inventory management.
• Ensure server/workstation security, apply patches, and maintain DoD STIG compliance.
• Install and configure Windows Server operating systems and services.
• Manage Active Directory, DNS, DHCP, and VMware configurations.
• Provide technical support for workstations, servers and virtual terminals.
• Monitor system health and respond to incidents during the assigned shift; document JSP procedures.
• Maintain configuration and process documentation.
• Support DIARMF activities and cybersecurity standards.
• Mentor junior administrators on the shift.

Skills

Top-Secret Clearance

Windows Server Admin

Active Directory Admin

Patch Management

DIARMF Knowledge

PowerShell Scripting

24x7 Operations

Education

BS in IT or Engineering

Tools

Active Directory

DNS

DHCP

VMware

ACAS

HBSS

Tanium

Remedy

Job description

S2i2 Inc is seeking a Senior Systems Administrator in Fairfield, PA (On-Site) to ensure operational stability, security, and maintenance of server and network systems in the DISA JSP environment.

You will install and configure Windows server OS, manage Active Directory, DNS and DHCP, apply patches, monitor logs, perform backups, and support DIARMF with DoD security standards. This is a hands-on role requiring collaboration with junior staff and night/weekend availability as needed.