Systems - Linux Systems Administrator - Aberdeen, United States - Quadrant

Quadrant Aberdeen, United States

2 weeks ago

Description

Linux Systems Administrator

Aberdeen Proving Ground, MD

MUST:

Must have an Interim or Active Secret Clearance
Experienced Linux Systems Administrator
5+ years of overall applicable experience
Obtain and maintain (if don't already possess) a computing environment certification relevant to job duties (must have within 6 months of hire)
DoD 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.
BA or BS Bachelor's Degree

DUTIES:

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 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.

Quadrant is an affirmative action/equal opportunity employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, status as a protected veteran, or status as an individual with a disability.

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