Top Secret Systems Administrator – Lab & RMF Specialist

Prattwhitney; Arlington (TX); On-site; USD 96,000 - 182,000; Full time

Job summary

RTX BBN Technologies is seeking a Systems Administrator to manage on-site lab IT infrastructure and security. You will implement system hardening to NIST/STIG standards, manage Windows and Linux environments, and collaborate with Cybersecurity for RMF compliance.

Responsibilities include maintaining Active Directory, VM environments, and security tooling (SCAP, Nessus, Splunk). A TS clearance and DoD-aligned certs are required for this role.

Qualifications

• Experience configuring and hardening systems to NIST 800-53 and STIG standards.
• DoD 8570 IAT Level II equivalent certification (e.g., CompTIA Security+ CE).
• Experience with classified U.S. Government networks.

Responsibilities

• Lead on-site lab and IT infrastructure administration for Windows and Linux environments.
• Collaborate with Cybersecurity & RMF teams to ensure compliance and documentation.
• Configure, monitor and maintain network, server, and security tooling; support vulnerability management.

Skills

Security clearance

Lab/IT security hardening

Windows/Linux administration

Networking fundamentals

Scripting (Python/PowerShell)

Education

University degree in related field

Tools

STIG Viewer

SCAP Compliance Checker

EvaluateSTIG

Splunk

Nessus

Active Directory

VMware

Job description

RTX BBN Technologies is seeking a Systems Administrator to manage on-site lab IT infrastructure and security. You will implement system hardening to NIST/STIG standards, manage Windows and Linux environments, and collaborate with Cybersecurity for RMF compliance.

Responsibilities include maintaining Active Directory, VM environments, and security tooling (SCAP, Nessus, Splunk). A TS clearance and DoD-aligned certs are required for this role.