Unix/Linux Administrator

Portsmouth - USA

Monthly Salary: Not Disclosed

Posted on: 30+ days ago

Vacancies: 1 Vacancy

The job posting is outdated and position may be filled

Job Summary

Position Summary

The Unix/Linux Administrator will play a key role in administering and securing enterprise Unix/Linux systems ensuring compliance with DoD cybersecurity standards and supporting shipyard and naval operations. This role requires technical expertise strong troubleshooting skills and the ability to collaborate across multidisciplinary teams in a high-tempo environment.

Duties & Responsibilities

Administer and maintain Unix/Linux systems (Red Hat CentOS SUSE Ubuntu Solaris AIX).
Perform system installation configuration patching kernel upgrades and package management.
Automate and streamline operations using scripting and configuration management tools (Bash Python Ansible).
Implement system hardening apply DISA STIGs and remediate vulnerabilities to ensure IA/DoD compliance.
Manage user accounts authentication and directory services (LDAP Kerberos NIS Radius/TACACS).
Monitor system performance availability and security using enterprise monitoring tools (Nagios Zabbix Splunk Elastic Stack).
Support storage systems and integrations (NFS iSCSI SAN NetApp ZFS).
Provide Tier II/III troubleshooting root-cause analysis and incident resolution.
Maintain backup/restore operations and disaster recovery plans.
Collaborate with system administrators network engineers cybersecurity personnel and shipyard operations teams.
Create and maintain documentation for system builds procedures and troubleshooting.
Mentor junior administrators and provide technical guidance.
Strong background in Unix/Linux operating systems and enterprise-level troubleshooting.
Proficiency in scripting and automation (Bash Python Ansible).
Experience with security baselines DISA STIGs and DoD/RMF/NIST compliance.
Knowledge of authentication and authorization services.
Familiarity with virtualization and containerization (VMware Docker Podman Kubernetes).
Skilled in storage integration and file system administration.
Experience with enterprise monitoring and log analysis tools.

Education & Experience Requirements

Bachelors degree in an IT-related discipline (e.g. Computer Science Information Technology Software Engineering) or Level II Certification (Security or better) AND four (4) years of relevant experience
5-7 years of experience with Unix/Linux system administration in enterprise or DoD environments
Microsoft Certified: SharePoint Server Hybrid Administrator Associate Microsoft Certified: Windows Server Administrator and CompTIA Security are desired
SECURITY CLEARANCE REQUIREMENTS: Active DoD Secret clearance with eligibility for higher-level access (SCI/SAP)

Skill & Certification Requirements

SECURITY CLEARANCE REQUIREMENTS: Active DoD Secret clearance with eligibility for higher-level access (SCI/SAP)
Experience supporting Navy shipyard or DoD IT environments.
Familiarity with DoD cybersecurity tools (HBSS ACAS).
Certifications such as RHCSA/RHCE CompTIA Linux Security or CISSP.
Experience with IT modernization cloud adoption or infrastructure transformation.
Proven ability to support mission-critical operations with minimal downtime.
Demonstrated experience with cybersecurity compliance and vulnerability management.
Ability to provide Tier II/III operational support and root-cause analysis.
Strong communication and technical documentation skills.
Hands-on expertise inperformance tuning monitoring tools and lifecycle managementof storage infrastructure.
Strong analytical and problem-solving skills with the ability to resolve complex technical issues in time-sensitive situations.
Excellent communication and documentation skills with the ability to collaborate across technical teams.
Position requires sitting for long periods of time. (Sedentary Work)
Most duties require extended use of a keyboard and computer monitor
Extended Telephone Use
May require lifting of 20-50 lbs
LCI is an Equal Opportunity Employer/Veterans/Disabled

Leader Communications is an Affirmative Action and Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin or protected veteran status and will not be discriminated against on the basis of disability. If youd like to view a copy of the companys affirmative action plan or policy statement please email

Required Experience:

Unclear Seniority

Position SummaryThe Unix/Linux Administrator will play a key role in administering and securing enterprise Unix/Linux systems ensuring compliance with DoD cybersecurity standards and supporting shipyard and naval operations. This role requires technical expertise strong troubleshooting skills and th...

Position Summary

Duties & Responsibilities

Administer and maintain Unix/Linux systems (Red Hat CentOS SUSE Ubuntu Solaris AIX).
Perform system installation configuration patching kernel upgrades and package management.
Automate and streamline operations using scripting and configuration management tools (Bash Python Ansible).
Implement system hardening apply DISA STIGs and remediate vulnerabilities to ensure IA/DoD compliance.
Manage user accounts authentication and directory services (LDAP Kerberos NIS Radius/TACACS).
Monitor system performance availability and security using enterprise monitoring tools (Nagios Zabbix Splunk Elastic Stack).
Support storage systems and integrations (NFS iSCSI SAN NetApp ZFS).
Provide Tier II/III troubleshooting root-cause analysis and incident resolution.
Maintain backup/restore operations and disaster recovery plans.
Collaborate with system administrators network engineers cybersecurity personnel and shipyard operations teams.
Create and maintain documentation for system builds procedures and troubleshooting.
Mentor junior administrators and provide technical guidance.
Strong background in Unix/Linux operating systems and enterprise-level troubleshooting.
Proficiency in scripting and automation (Bash Python Ansible).
Experience with security baselines DISA STIGs and DoD/RMF/NIST compliance.
Knowledge of authentication and authorization services.
Familiarity with virtualization and containerization (VMware Docker Podman Kubernetes).
Skilled in storage integration and file system administration.
Experience with enterprise monitoring and log analysis tools.

Education & Experience Requirements

Bachelors degree in an IT-related discipline (e.g. Computer Science Information Technology Software Engineering) or Level II Certification (Security or better) AND four (4) years of relevant experience
5-7 years of experience with Unix/Linux system administration in enterprise or DoD environments
Microsoft Certified: SharePoint Server Hybrid Administrator Associate Microsoft Certified: Windows Server Administrator and CompTIA Security are desired
SECURITY CLEARANCE REQUIREMENTS: Active DoD Secret clearance with eligibility for higher-level access (SCI/SAP)

Skill & Certification Requirements

SECURITY CLEARANCE REQUIREMENTS: Active DoD Secret clearance with eligibility for higher-level access (SCI/SAP)
Experience supporting Navy shipyard or DoD IT environments.
Familiarity with DoD cybersecurity tools (HBSS ACAS).
Certifications such as RHCSA/RHCE CompTIA Linux Security or CISSP.
Experience with IT modernization cloud adoption or infrastructure transformation.
Proven ability to support mission-critical operations with minimal downtime.
Demonstrated experience with cybersecurity compliance and vulnerability management.
Ability to provide Tier II/III operational support and root-cause analysis.
Strong communication and technical documentation skills.
Hands-on expertise inperformance tuning monitoring tools and lifecycle managementof storage infrastructure.
Strong analytical and problem-solving skills with the ability to resolve complex technical issues in time-sensitive situations.
Excellent communication and documentation skills with the ability to collaborate across technical teams.
Position requires sitting for long periods of time. (Sedentary Work)
Most duties require extended use of a keyboard and computer monitor
Extended Telephone Use
May require lifting of 20-50 lbs
LCI is an Equal Opportunity Employer/Veterans/Disabled