Sr. RHEL System Administrator

Springfield, VA, 1099, W2

The Sr. Red Hat Enterprise Linux (RHEL) System Administrator supports the Information Technology Operations and Maintenance (O&M) Server team to provide enterprise-level, high-performance, highly available, server technology solutions (systems, applications, and servers) as the customer’s Enterprise IT Systems, Applications, and Services catalogs.

Responsibilities

  • Provides O&M support – installation, configuration, securing and hardening, testing, sustainment, upgrading, remediation, and decommissioning – as it relates to enterprise server-based solutions on the Linux server platforms across the IT enterprise’s multi-platform information system, varying in size and complexity (LAN, MAN, WAN, etc.)
  • Supports the mid-level internal escalation tier(s) for the Server O&M team providing troubleshooting support and guidance to assess and remediate challenges in the Server system, Application, and Services in a timely manner that arise
  • Contributes to the production and maintenance of documentation for the Server team’s solution system(s), sub-system(s), and component(s) deployed and in use in the customer’s IT Solutions portfolio, including as-built documentation, capacity/performance plans, policies and procedures, workflows, run books, and all other area of server system life-cycle planning

Requirements

  • TS/SCI Clearance with ability to obtain and maintain CI Poly
  • 5 or more years of hands-on experience providing O&M support of Linux-based enterprise server operating systems (OSs) (primarily RHEL) and server applications and services, such a Red Hat Satellite, Ansible, Puppet, etc., hosted on those platforms on a production information systems varying in size and complexity (LAN, MAN, WAN, etc.)
  • 3 or more years of personal and hands-on experience installing, configuring, tuning, securing, operating, and maintaining Red Hat Satellite as the infrastructure management solution to keep deployed production RHEL environments running efficiently, securely, and compliant within an enterprise production environment. Working knowledge and/or hands-on experience with Red Hat Satellite 6.3 or newer is a plus.
  • 3 or more years of experience operating and maintaining solutions in secure processing environments which must adhere to U.S. Government Information Assurance and Security standards such as the Defense Information Systems Agency (DISA) Security Requirements Guides (SRGs) and Security Technical Implementation Guides (STIGs)
  • 3 or more years of personal and hands-on experience planning, implementing, configuring, documenting, and maintaining Security Enhanced Linux (SELinux) configurations, to include Multi Category Security (MCS) and Multi Level Security (MLS), on supported Linux platforms, to include RHEL
  • Demonstrated hands-on experience providing O&M support to third-party anti-virus and anti-malware products installed on RHEL platforms to include advanced and in-depth impact analysis, policy and rule review, and providing recommendations to ensure RHEL platforms are running securely, but also as efficient and optimal as possible within information assurance (IA) and information security (INFOSEC) boundaries
  • Demonstrated experience understanding and applying vendor guidance and best practices to securely implement, configure and support the use of an established Microsoft Active Directory (AD) as a centralized identity and authentication solution for supported Linux platforms, with specific focus on RHEL
  • Demonstrated experience monitoring deployed production Linux platforms for performance, availability, and/or security degradation, issues, problems, and/or risks and proactively recommending platform tuning, maintenance, upgrades, or other appropriate correct or remediate them before they impact the business or mission function, or end-user directly
  • Demonstrated experience authoring, testing, troubleshooting, and implementing scripted technologies, such as Microsoft PowerShell on Linux, Bash, Perl, Python, etc., to automate and orchestrate routine, as well as complex O&M duties and responsibilities, with a focus on maximizing efficiency, consistency, and minimizing the subsequent human error factor of related tasks
  • Shall meet the minimum credential requirements for a Cyber IT/Cybersecurity Workforce (CSWF) position as defined in SECNAV M-5239.2 compliance
  • Bachelor’s degree from an Accredited University; or CompTIA Security+ ce; or GIAC Security Essentials (GSEC); or Systems Security Certified Practitioner (SSCP)

Bonus Points

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