Agile Defense11h ago

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Junior Red Hat Linux Engineer

United States·QuanticoRegularentry

OtherLinux Engineer

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Quick Summary

Key Responsibilities

Install and patch operating systems, application,

Technical Tools

OtherLinux Engineer

About Agile Defense

At Agile Defense we know that action defines the outcome and new challenges require new solutions. That’s why we always look to the future and embrace change with an unmovable spirit and the courage to build for what comes next.

Our vision is to bring adaptive innovation to support our nation's most important missions through the seamless integration of advanced technologies, elite minds, and unparalleled agility—leveraging a foundation of speed, flexibility, and ingenuity to strengthen and protect our nation’s vital interests.

Requisition #: 1639

Job Title: Junior Red Hat Linux Engineer

Location: Quantico, VA

Clearance Level: Secret, Must Have Clearance to Start

Required Certification(s): DoD 8570 IAT III or IAM II (CASP+, CCNP Security, CISA, GSE, SCNA, CISSP, CAP, GSLC, CISM, GCED, GCIH, CISO, or HCISPP)

The successful candidate will use their Red Hat Linux experience to support the Customer in the design and implementation of their Assured Compliance Assessment Solution (ACAS) for the Customer’s Government Enterprise Networks (GEN). The Linux Administrator will operate and maintain the infrastructure for the ACAS solution to support network and appliance scanning and configuration assessments and provide training to operators and Information Assurance personnel to maintain and operate the ACAS tool functionality.

DUTIES AND RESPONSIBILITIES:

Install and patch operating systems, application, and document Department Information Systems Agency (DISA) Security Technical Implementation Guidelines (STIGs) applicable to each network environment for all ACAS implementations.

Assesses current ACAS implementations for each of the GEN networks and recommend changes.

Document the steps required to design the ACAS solution for each of the GEN networks to include IP address, Fully Qualified Domain Name, and physical location of each component.

Create network diagrams of the designs with Microsoft Visio (include list of hardware and software requirements).

Maintains the Nessus scanners and Passive Vulnerability Scanner’s (PVS) connectivity with the associated Security Center (SC).

Develop and/or update the Standard Operating Procedures (SOP) to support each of the client ACAS solutions documented within the SharePoint portal.

Provide reports as necessary.

Build Linux Server from DISA provided ISO image.

Knowledge and experience with RedHat Linux.

Possesses understanding and experience with common cybersecurity toolsets and processes to include STIGs, CAS, IAVA Management and Implementation, and Operation Order (OPORD)/Fragmentary Order (FRAGO) support.

3+ years’ experience in supporting, configuring, and administering Linux

3+ (RHEL) operating system in an enterprise environment RHEL 7.x or greater

Experience with virtualized environments (vSphere, ESXI)

Red Hat Enterprise Linux (RHEL) experience.

Must be able to troubleshoot SSH connection issues.

Good understanding of LVM Partitioning, Disk space and troubleshooting Systems related issues.

Familiar with VMware and vSphere.

Understanding of SSL/TLS Certificate and OS hardening.

Strong understanding of Network configuration and troubleshooting (nmtui, nmcli, service, netstat, grep, top command).

Understanding of patching and RPM package management is a MUST!!!

Be able to troubleshoot Kernel Panic, Root and Grub password Reset, & Firewall configurations.

Familiar with Ansible, Ansible-playbook and ansible roles

Understanding on Red Hat Satellite Version 6.12 or higher

Familiar with Active Directory Concepts, LDAP, or Kerberos

Familiar with migration from RHEL7 to RHEL8 using Leapp utility.

Build or configure new YUM Repositories for patching purposes.

Familiar with AWS/AZURE Cloud for future projects.

Scripting (Nessus Attack Scripting Language (NASL), Python, Bash)

Engineering experience with Nessus Manager and Monitor Implementation

Able to spin new instance on the cloud from a given AMI or Launch Template

Understand the concept of Security Groups, VPC, IAM, Autoscaling, Load Balancer Container architecture

General office environment. Work is generally sedentary in nature but may require standing and walking for up to 10% of the time. The working environment is generally favorable. Lighting and temperature are adequate, and there are not hazardous or unpleasant conditions caused by noise, dust, etc. Work is generally performed within an office environment, with standard office equipment available.

Contractor site with 0-10% travel possible

Possible off-hours work to support releases and outages

10 lbs. maximum lifting, occasional lift/carry of small articles

Occasionally required to stand; frequently required to walk and sit

Continually required to utilize hand and finger dexterity

Occasionally required to climb, balance, bend, stoop, kneel or crawl

Continually required to talk or hear

Continually utilize visual acuity to operate equipment, read technical information, and/or use a keyboard

Our Core Values

Employees of Agile Defense are our number one priority, and the importance we place on our culture here is fundamental. Our culture is alive and evolving, but it always stays true to its roots. Here, you are valued as a family member, and we believe that we can accomplish great things together. Agile Defense has been highly successful in the past few years due to our employees and the culture we create together.

What makes us Agile? We call it the 6Hs, the values that define our culture and guide everything we do. Together, these values infuse vibrancy, integrity, and a tireless work ethic into advancing the most important national security and critical civilian missions. It's how we show up every day. It's who we are.

Happy - Be Infectious. Happiness multiplies and creates a positive and connected environment where motivation and satisfaction have an outsized effect on everything we do.
Helpful - Be Supportive. Being helpful is the foundation of teamwork, resulting in a supportive atmosphere where collaboration flourishes, and collective success is celebrated.
Honest - Be Trustworthy. Honesty serves as our compass, ensuring transparent communication and ethical conduct, essential to who we are and the complex domains we support.
Humble - Be Grounded. Success is not achieved alone, humility ensures a culture of mutual respect, encouraging open communication, and a willingness to learn from one another and take on any task.
Hungry - Be Eager. Our hunger for excellence drives an insatiable appetite for innovation and continuous improvement, propelling us forward in the face of new and unprecedented challenges.
Hustle - Be Driven. Hustle is reflected in our relentless work ethic, where we are each committed to going above and beyond to advance the mission and achieve success.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

Location & Eligibility

Where is the job

Quantico, United States

On-site at the office

Who can apply

Listing Details

Posted: June 2, 2026
First seen: June 2, 2026
Last seen: June 3, 2026

Posting Health

Days active: 0
Repost count: 0
Trust Level: 67%
Scored at: June 2, 2026

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Agile Defense

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Agile Defense: Always Evolving. Agile Defense stands at the forefront of innovation, driving advanced capabilities and solutions tailored to the most critical national security and civilian missions.

Employees

3k+

Founded

1998

Domain

Jobs

External application · ~5 min on Agile Defense's site

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