Linux Administrator (Classified Systems) – Active Secret Clearance Required

Viasat, Inc. • Carlsbad, CA

2d • Onsite

About The Position

We are seeking a highly skilled and motivated Linux Administrator to play a pivotal role in supporting and enhancing engineering functions within Viasat. This individual will focus on safeguarding Linux-based environments, ensuring compliance with critical security frameworks and policies, and enabling efficient operations to empower engineering teams. The role requires a balance of technical expertise, security diligence, and a proactive dedication to continuous improvement.

Requirements

• Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or a related technical field; equivalent work experience will also be considered.
• 6+ years of Linux administration experience (e.g., RHEL, Ubuntu), emphasizing a solid focus on cybersecurity and administration.
• Over 4 years involved in DoD or industrial security programs, including demonstrated expertise in RMF processes.
• 2+ years of experience in crafting, implementing, and managing virtualized infrastructure solutions such as VMware, Hyper-V, and OpenShift.
• Administer Trellix for endpoint protection (ePO), signature updates, and alert resolution.
• Proficient in maintaining and administering core environmental services (e.g., Active Directory/IdAM, GPOs, logging, monitoring, DNS, DHCP).
• Experience operating and managing centralized storage platforms (e.g., NetApp) and related backup management services (e.g., Veeam).
• Good attention to detail, skill in critical thinking and research, problem-solving abilities, and the ability to multitask in fast-paced environments.
• Outstanding communication and writing skills that enable conveying technical details effectively to diverse collaborators.
• Good ability to collaborate with multi-functional teams, encouraging a cohesive and productive work atmosphere.
• You must be able to lift equipment (up to 40lbs) and work within controlled environments.
• DoD 8140.01 Certification (e.g., CISSP, Security+).
• Active Secret Security Clearance required.

Nice To Haves

• Hands-on experience with container creation and deployment (e.g., Docker, LXD).
• Familiarity with automation/orchestration tools (e.g., Ansible, Puppet) for system configuration and deployments.
• Proficiency in security event monitoring tools like Splunk to evaluate risks and verify mitigation efforts.
• Scripting or development skills to automate or update configurations and deployment of software, infrastructure (IaC), updates, etc.
• Experience configuring and maintaining cross-domain solutions and secure enclaves.
• Relevant certifications such as RHCE, RHCSA, LFCS, or equivalent.
• Experience implementing or supporting AI-enabled automation, self-hosted large language models (LLMs), retrieval-augmented generation (RAG), or AI-assisted development platforms in enterprise or air-gapped environments.

Responsibilities

• Manage the day-to-day activities of configuring, maintaining, and fixing Linux-based solutions, ensuring security guidelines and compliance.
• Perform system hardening and vulnerability management, aligning with DISA STIGs NIST 800-53, and other security standards.
• Conduct cybersecurity monitoring, incident response, and analysis for Linux environments and classified systems.
• Develop and maintain system security documentation, including change control logs, technical updates to Plan of Action and Milestones (POAMs), etc.
• Complete system and account management activities such as configuration and periodic maintenance, responding to breach incidents as required.
• Perform site self-assessments to ensure alignment with regulations, standards, and organizational directives.
• Collaborate with DevOps teams to enhance operational efficiencies and minimize security risks.
• Support implementation of virtualized infrastructure (e.g., VMware, Hyper-V, OpenShift) and centralized storage solutions such as NetApp.
• Stay informed about evolving cybersecurity threats, emerging technologies, and updated RMF processes.
• Provide technical guidance and mentorship to team members for the continuity of standard methodologies.

Benefits

• range of medical, financial, and/or other benefits, dependent on the position offered
• comprehensive benefit offerings that are focused on your holistic health and wellness

What This Job Offers

• Job Type: Full-time
• Career Level: Senior