Systems Admin Sr

Requisition Number

112529BR

We put our customers first – exemplified by our missions: “We Protect Those Who Protect Us®” and “We Innovate For Those Who Move The World.” Sound like a team you want to be a part of? Come build your career with BAE Systems.

Position Summary:

As a Senior Closed Area Linux Systems Administrator you will provide comprehensive technical and operational support for classified IT systems. This position requires a seasoned IT professional with expertise in managing complex, air-gapped systems and lab environments in accordance with DoD and Intelligence Community security requirements. You will be responsible for the configuration, maintenance, and monitoring of secure networks and systems, including Lab-in-a-Box (LIB) environments, virtualization platforms, endpoint protection, and logging/alerting tools. This position is 100% onsite within a closed, classified area. Some after-hours or weekend support may be required for maintenance windows or incident response. You must be able to lift equipment (up to 40lbs) and work within controlled environments.

In this Senior Closed Area System Administrator you will make impacts in the following ways;

Configure, deploy, and maintain Lab-in-a-Box (LIB) environments used in closed area testing and mission scenarios

Develop and execute system shutdown and secure wipe procedures, in accordance with DoD and agency guidelines

Lead and coordinate data spill containment, response, and remediation actions in classified environments

Operate and manage Nessus vulnerability scanning, assessment reporting, and risk remediation tracking

Maintain and support VMware-based virtual infrastructure, including host management and resource allocation

Operate and manage Veeam backup and recovery solutions for secure system images and restoration planning

Administer Trellix ePO (McAfee) for endpoint protection policy management, signature updates, and alert resolution

Perform domain controller maintenance, including replication, DNS/DHCP services, and health monitoring

Design, implement, and troubleshoot Group Policy Objects (GPOs) in Active Directory

Support Splunk operations, including forwarder management, dashboard/report creation, and log analysis for auditing and threat detection

Ensure all systems are compliant with applicable STIGs, RMF controls, and cyber hygiene policies

Maintain system documentation, configuration change records, and contribute to audit readiness

Collaborate with ISSOs/ISSMs, facility security, and other stakeholders to ensure secure and compliant operations

Job Posting Title

Senior Linux Administrator

Job Family

Systems Administration

Travel Percentage

<10%

Clearance Level – Must be able to obtain for position

Top Secret/SCI Polygraph

Shift

1st Shift

Regular or Temporary

Regular

Typical Education and Experience

Typically a Bachelor's Degree and 4 years work experience or equivalent experience

Required Skills and Education

Active U.S. Secret Security Clearance and CompTIA Security+ or equivalent DoD 8570 IAT Level II certification

5-7 years of relevant System Administration experience related to the position responsibilities including profiiency with Linux OS or a Degree in a related field with 4 or more years of system administration experience oncluding proficiency with Linux OS

Direct experience configuring and managing Lab-in-a-Box (LIB) environments

Familiarity with data spill response protocols and secure system sanitization

Hands-on experience with Nessus, VMware vSphere, Veeam, and Trellix ePO

Strong Active Directory experience, including domain controller and GPO management including user/group management, OU structure, and GPOs

Working knowledge of Splunk in secure environments (including alerting and data retention strategies)

Understanding of DoD and IC security standards, including RMF, NISPOM, and STIG compliance

Preferred Skills and Education

Active U.S. TS/SCI Security Clearance

4 or more years’ experience in classified or closed area environments

Experience across both Linux and Windows operating systems

Degree in related field

Experience with system accreditation (e.g., SSP development, POA&M tracking)

Familiarity with classified lab setups, test bed environments, or R&D support

Exposure to cross-domain solutions, enclave management, or SAP/SAR environments

Scripting experience (PowerShell, Python) to automate common sysadmin tasks

Experience supporting audit and inspection activities

About BAE Systems Electronic Systems

BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it’s what we do at BAE Systems. Working here means using your passion and ingenuity where it counts – defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team—making a big impact on a global scale. At BAE Systems, you’ll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems’ game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere – from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact – for our customers and the communities we serve.

Department

1ZF_ES Information Technology

Company

BAE_BAE SYSTEMS Info&Elec Sys Intg

Posting Requirements

Internal/External

Job Category

Engineering & Technology

U.S. Person Required

Yes

Business Area

ES Functional Staff

Salary Max Point

161680

Salary Min Point

95106

Union Job

None

Recruiter

Chris Pereira