Linux Systems Administrator

3 weeks ago

Aberdeen, United States ALTA IT Services Full time

Systems Administrator (Unix/Linux/Mac)
Interim Secret Clearance or above
Aberdeen Proving Ground, MD – hybrid
Must be IAT II certified (Security+ or similar)

RESPONSIBILITIES:
• Administer Red Hat servers using existing enterprise tools such as Satellite, Puppet, Ansible, JAMF, and Centrify.
• Administer services running on Red Hat servers such as Apache, Docker, Kubernetes, PostgreSQL, Postfix, Nessus, ACAS Security Center, Samba, Splunk, and Ansible Tower.
• Write custom bash scripts to accomplish various administration tasks.
• Troubleshoot system outages and issues to resolve the problem and recover the services to maximum performance in the shortest amount of time possible.
• Ensure that all client services, including underlying hardware and software, meet all DoD 8500 series and NIST 800-53 security requirements.
• Develop systems architecture and other system engineering/administration documentation.
• Create test plans to allow for a proper evaluation of hardware and software being considered for implementation.
• Provide the client with a written test plan for approval prior to implementation.
• Provide written testing results prior to putting systems into production.
• Provide written evaluations of system concepts, system designs, and system support program proposals.
• Research, develop, demonstrate, integrate, and test innovative technologies.
• Implement and monitor testing and installation of patches, updates, additional tools and future versions of software.
• Ensure the server logs are kept on a central log server, such as Splunk, and are provided to the ISSM (Information Systems Security Manager) upon request.
• Perform preventative maintenance and server patching in accordance with ACAS scans.
• Install patches on the client servers and workstations.
• Ensure compliance with Cybersecurity Vulnerability Alerts and Security Technical Implementation Guides (STIG).
• Assist in technical evaluation of the vendor submissions for compliance with client specifications.
• Participate in Change Management Control process and submit Requests for Change.
• Develop and administer RHEL and Mac desktop integration with Windows services.
• Support user PKI authentication with Active Directory integration.
• Support end user RHEL and MacOS desktop issues and requests.

QUALIFICATIONS:
• BA or BS Bachelor’s Degree with 5+ years of overall applicable experience highly preferred
• Minimum requirement is HS Diploma with 7+ years of overall applicable experience.
• Interim Secret is allowed until full Secret clearance.
• Obtain and maintain (if don't already possess) a computing environment certification relevant to job duties (must have within 6 months of hire)
• DoD 8570.01-M baseline certification at time of hire
• Experience with Red Hat servers using existing enterprise tools including Satellite, Puppet, Ansible, JAMF, Centrify.
• Experience with Red Hat servers running Apache, Docker, Kubernetes, PostgreSQL, Postfix, Nessus, ACAS Security Center, Samba, Splunk, Ansible Tower.
• Experience with writing custom bash scripts.
• Experience with implementing STIG checklists.
• Familiar with RMF processes and artifacts.
• Experience with developing and administering full RHEL and Mac desktop integration with Windows services.
• Experience with user PKI authentication with Active Directory integration.
• Experience with security tools such as ACAS.
• Experience in evaluating hardware and software being considered for implementation.
• Experience with RHEL system concepts and system designs.
• Experience in making recommendations that addresses the future performance needs of enterprise services.
• Experience with preventative maintenance and server patching.
• Must be able to work independently.
• Must have strong verbal and written communication skills.
• Must be able to follow instructions and provide support to all team members.

#M2

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