Systems Administrator (Linux/Automation Focus)

KBR Careers; Florida; On-site; USD 120,000 - 170,000; Full time

Benefits offered by this job

401K plan

Medical coverage

Dental coverage

Vision coverage

Life insurance

AD&D

Flexible spending account

Disability

Paid time off

Flexible work schedule

Job summary

KBR is seeking a Senior Linux Systems Administrator with an emphasis on automation to join our National Security Solutions team in Florida. You will design, deploy, and maintain Linux server architectures across classified test networks and use Ansible for provisioning and hardening.

The role focuses on streamlining configuration management, implementing DISA STIGs, and RMF compliance while coordinating with cross-functional teams.

Qualifications

• Active Top Secret clearance is required.
• 10+ years in a Systems Administrator/Systems Engineering role.
• Deep knowledge of Enterprise Linux (RHEL) and security hardening.
• Experience with Ansible for provisioning and automation.
• Vendors and tools listed in the job description are preferred.

Responsibilities

• Install, configure, and maintain enterprise Linux distributions and core services.
• Develop and maintain Ansible playbooks and collections for baseline provisioning and hardening.
• Support containerized environments with Docker, Podman, and Kubernetes.
• Automate DISA STIG implementation and RMF compliance across Linux stacks.
• Manage software repositories, updates, and image baselines with Satellite/Foreman.
• Administer virtualization (VMware vSphere) and networking/storage in a heterogeneous setup.
• Produce SOPs and diagrams for team knowledge transfer.

Skills

Security clearance

Linux administration

Scripting (Bash)

Automation mindset

Education

Bachelor's degree in a relevant field

Tools

Ansible

Docker

Kubernetes

VMware vSphere/vCenter

Red Hat Satellite

Foreman

ACAS/Nessus

Job description

Title: Systems Administrator (Linux/Automation Focus)

Systems Administrator (Linux/Automation Focus) Belong. Connect. Grow. with KBR!

KBR’s National Security Solutions team provides high-end engineering and advanced technology solutions to our customers in the intelligence and national security communities. In this position, your work will have a profound impact on the country's most critical role — protecting our national security.

Why Join Us?

• Innovative Projects: KBR's work is at the forefront of engineering, logistics, operations, science, program management, mission IT, and cybersecurity solutions.
• Collaborative Environment: Be part of a dynamic team that thrives on collaboration and innovation, fostering a supportive and intellectually stimulating workplace.
• Impactful Work: Your contributions will be pivotal in designing and optimizing defense systems that ensure national security and shape the future of multi-domain operations.

Position Overview

KBR is seeking a Senior Linux Systems Administrator with an emphasis on automation and orchestration to join our team. The successful candidate will provide systems administration and infrastructure automation support to the Test Resource Management Center’s (TRMC) All Domain Test Range (ADTR) and INDOPACOM Pacific-Rim Multi-Domain Training and Experimentation Capability Team, Joint Mission Environment Test Capability (JMETC) Secret Network (JSN) Node, JMETC Multiple Independent Levels of Security Network (JMN) Node, Secret Defense Research and Engineering Network (SDREN), and Defense Research and Engineering Network (DREN). You will design, deploy, and maintain robust Linux-centric server architectures, streamline configuration management using Ansible, and ensure full compliance with DISA STIGs and DoD Risk Management Framework (RMF) standards across distributed test networks.

Responsibilities

• Install, configure, optimize, and maintain enterprise Linux distributions (RHEL, Rocky, CentOS) and associated core services across bare-metal and virtualized environments.
• Develop, test, and maintain reusable Ansible playbooks, roles, and collections to automate baseline provisioning, system hardening, recurring patching cycles, and configuration drift remediation.
• Support containerized environments using Docker, Podman, and Kubernetes, ensuring seamless workload deployment and lifecycle management.
• Automate the implementation and audit verification of DISA STIGs across Linux operating systems and application stacks; remediate vulnerability findings identified via ACAS/Nessus.
• Manage software repositories, system updates, and image baselines utilizing enterprise tools such as Red Hat Satellite, Foreman, or equivalent local mirrors.
• Administer supporting virtualization (VMware vSphere/vCenter), storage systems, networking hardware, and secondary Windows services within a heterogeneous environment.
• Maintain compliance with TRMC cybersecurity directives, RMF continuous monitoring policies, HBSS/Trellix agent deployments, and centralized logging/syslog infrastructure.
• Author clear Standard Operating Procedures (SOPs), Ansible execution guides, and architecture/network diagrams to facilitate team knowledge transfer.

Required Qualifications

• Must have an active Top Secret clearance.
• Minimum of 10 years of experience in a Systems Administrator or Systems Engineering role.
• Technical Bachelor’s degree (relevant professional experience may be substituted in lieu of a degree).
• In-depth knowledge of Enterprise Linux (RHEL 7/8/9) system architecture, storage management (LVM), systemd, firewalld, SELinux policies, and Bash/shell scripting.
• Hands‑on experience developing, testing, and debugging production Ansible playbooks, inventory structures, and automation workflows.
• Proven experience administering virtualization platforms, preferably VMware environments (vSphere, vCenter, vDS, NSX).

Desired Qualifications

• Experience with container engines and orchestration platforms (Docker, Podman, Kubernetes, or Red Hat OpenShift).
• Experience deploying and operating Red Hat Satellite / Capsule servers or automated Kickstart workflows.
• Experience hardening Linux environments using SCAP tools, applying DISA STIGs, and working within DoD RMF‑accredited enclaves.
• Working knowledge of ACAS/Nessus vulnerability scanners and Trellix (HBSS/EPO) Linux agents.
• Current DoD 8570/8140‑compliant baseline certification (e.g., CompTIA Security+, CASP+, or CISSP) and a Linux Computing Environment certification (e.g., RHCSA, RHCE, or Linux+).
• Familiarity with Layer 2/3 networking, firewall operations, and DoD networks including DREN and SDREN.
• Experience supporting Windows Server environments (Active Directory, Group Policy, DNS, PKI) in a hybrid enterprise.

Physical & Travel Requirements

• Ability to lift up to 35 lbs; willing to travel up to 20%.

Basic Compensation

• $130,000 - $170,000 (For Maryland Only)
• $130,000 - $170,000 (For Virginia Only)
• $120,000 - $150,000 (For Nevada Only)
• $130,000 - $170,000 (For California Only)
• The offered rate will be based on the selected candidate’s knowledge, skills, abilities and/or experience and in consideration of internal parity.

Additional Compensation

• KBR may offer bonuses, commissions, or other forms of compensation to certain job titles or levels, per internal policy or contractual designation.
• Additional compensation may be in the form of sign on bonus, relocation benefits, short term incentives, long term incentives, or discretionary payments for exceptional performance.

KBR Benefits

• KBR offers a selection of competitive lifestyle benefits which could include 401K plan with company match, medical, dental, vision, life insurance, AD&D, flexible spending account, disability, paid time off, or flexible work schedule.
• We support career advancement through professional training and development.

Belong, Connect and Grow at KBR

At KBR, we are passionate about our people and our Zero Harm culture. These inform all that we do and are at the heart of our commitment to, and ongoing journey toward being a People First company. That commitment is central to our team of team’s philosophy and fosters an environment where everyone can Belong, Connect and Grow. We Deliver – Together.

KBR is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, disability, sex, sexual orientation, gender identity or expression, age, national origin, veteran status, genetic information, union status and/or beliefs, or any other characteristic protected by federal, state, or local law.

KBR — Delivering Solutions, Changing the World. KBR brings together the best and brightest to deliver science, technology and engineering solutions that help governments and companies around the world accomplish their most critical missions and objectives. In everything we do, we are guided by our ONE KBR Values: We Value Our People – We create diverse, inclusive environments in which each person can feel safe, respected and valued, and where everyone has opportunities to grow and reach their full potential. We Deliver – We are uncompromising in our commitment to deliver innovative, high-quality, technology-led solutions for our customers and exceptional, sustainable value for all our stakeholders. We Are People of Integrity – We value honesty, trust, courage, fairness, prudence and tenacity. We believe doing what’s right for the planet, the communities where we work, and our people is good for business. We Empower – We empower our people with a shared purpose, the right tools and the supportive culture they need to be proactive decision‑makers, to be adaptive to change, and to succeed. We Are a Team of Teams – We have a will to succeed, but we value the achievements of our team of teams over individual accomplishments. Our collective focus makes us a better, stronger, more effective company. We have also embedded environmental, social and governance (ESG) principles in every business operation and corporate function. Not only are we committed to operating safely, sustainably and equitably, but we are also committed to using our capabilities and expertise to help our customers accomplish their sustainability goals. Worldwide, KBR employs a diverse workforce approximately 29,000 people strong, with customers in more than 80 countries and operations in 40 countries. At KBR, We Deliver.