Linux System Administrator

Bridge Defense•San Diego, CA

4h•Onsite

About The Position

Bridge Defense seeks a highly qualified Linux System Administrator to administer, maintain, and support Linux-based operating systems, web servers, databases, and enterprise applications. This role involves installing, patching, configuring, and maintaining Red Hat Enterprise Linux (RHEL) systems, ensuring the operational readiness of hardware, software, and networked information systems. The administrator will provide desktop and server support for users on classified and unclassified networks, and develop, test, document, implement, and maintain PHP scripts and automated web-based data distribution solutions. Key responsibilities include system monitoring, log analysis, troubleshooting, performance optimization, and implementing and maintaining cybersecurity controls in accordance with DoD and Department of the Navy requirements. The position also supports vulnerability management, remediation efforts, security testing, compliance reporting, information assurance assessments, and change management activities. Maintaining system documentation, configuration baselines, and standard operating procedures is crucial. The role involves supporting Information Systems Security Managers (ISSMs) and Information Systems Security Engineers (ISSEs) with cybersecurity compliance, reviewing audit logs, assisting with public key infrastructure (PKI) implementation, and researching/applying DoD and Department of the Navy cybersecurity policies. The administrator will provide technical recommendations to enhance system security, availability, and operational effectiveness, supporting Fleet Weather Center San Diego and its mission partners.

Requirements

Active Secret security clearance with the ability to maintain access.
DoD 8570/8140 IAT Level II or IAM Level II certification (e.g., Security+ CE).
Cybersecurity Workforce (CSWF) certification.
Strong knowledge of Linux system administration and cybersecurity best practices.
Experience supporting classified information systems and compliance requirements.
Bachelor's degree in information technology, Computer Science, Cybersecurity, Engineering, or related field. Equivalent military training and relevant experience may be substituted.
Experience administering Red Hat Enterprise Linux (RHEL) 7 and/or 8 environments.
Experience supporting enterprise IT infrastructure, information assurance, and cybersecurity compliance activities.
Experience with system patching, vulnerability remediation, and security auditing.
Experience supporting web servers, databases, and scripting solutions.

Nice To Haves

Familiarity with Navy, DoD, and Department of the Navy cybersecurity requirements.
Knowledge of Security Technical Implementation Guides (STIGs), RMF, and cybersecurity compliance frameworks.
Experience supporting meteorological, scientific, operational, or mission-critical systems.
Advanced degree in Cybersecurity, Information Technology, Computer Science, or related discipline.
Experience supporting Navy or Department of Defense organizations.
Experience with automation, scripting, and web application development.
Experience supporting PKI environments and cybersecurity testing initiatives.
Experience working within highly regulated operational environments.
Strong risk management skills and a commitment to cybersecurity best practices.
Excellent written and verbal communication skills.
Strong analytical, troubleshooting, and problem-solving abilities.
Ability to prioritize competing requirements and mission-critical tasks.
Ability to communicate effectively with technical and non-technical stakeholders.
Ability to exercise independent judgment and make sound technical decisions.
Strong collaboration and teamwork skills.
Self-starter with the ability to work independently in a fast-paced environment.
Technically curious and committed to continuous learning and professional development.
Ability to develop and maintain technical documentation, SOPs, and operational procedures.
Ability to adapt quickly to changing priorities and mission requirements.

Responsibilities

Administer, maintain, and support Linux-based operating systems, web servers, databases, and enterprise applications.
Install, patch, configure, and maintain Red Hat Enterprise Linux (RHEL) systems.
Maintain operational readiness of hardware, software, and networked information systems.
Provide desktop and server support for users operating on classified and unclassified networks.
Develop, test, document, implement, and maintain PHP scripts and automated web-based data distribution solutions.
Perform system monitoring, log analysis, troubleshooting, and performance optimization.
Implement and maintain cybersecurity controls in accordance with DoD and Department of the Navy requirements.
Support vulnerability management, remediation efforts, security testing, and compliance reporting activities.
Assist with information assurance assessments and security control implementation.
Support change management activities, system upgrades, and infrastructure modernization initiatives.
Maintain system documentation, configuration baselines, turnover documentation, and standard operating procedures.
Support Information Systems Security Managers (ISSMs) and Information Systems Security Engineers (ISSEs) with cybersecurity compliance activities.
Review, analyze, and interpret audit logs and security events to identify risks and potential security incidents.
Assist with public key infrastructure (PKI) implementation and management activities.
Research, interpret, and apply DoD and Department of the Navy cybersecurity policies, directives, and guidance.
Provide technical recommendations to improve system security, availability, and operational effectiveness.
Support Fleet Weather Center San Diego and associated mission partners as required.