Senior Systems Administrator with Security Clearance

NewGen is seeking a Senior Systems Administrator with an active Top Secret to provide O&M support - installation, configuration, securing and hardening, testing, sustainment, upgrading, remediation, and decommissioning- to the activity's IT cross domain solution (CDS) which allows access to Multiple Independent Levels of Security (MILS) and Operational Domains from a single workstation. This complex client-server solution requires the Senior Systems Administrator II to be knowledgeable and capable of administering a combination of Microsoft Windows and Linux based platforms. Additional duties and responsibilities include working alongside IT O&M Server team members to provide O&M support to existing server-based solutions which across a variety of major technology vendors including, but not limited to, Citrix, Esri, McAfee, Microsoft, Red Hat, and SolarWinds. The Senior Systems Administrator II shall support the mid-level internal escalation tier(s) for the Server O&M team providing troubleshooting support and guidance to assess and remediate challenges primarily in the CDS domain. Experience Required:
5+ years of hands-on experience providing O&M support of enterprise server operating systems (OSs) (Red Hat Enterprise Linux, etc.) and server applications and services across multi-platform information systems varying in size and complexity (LAN, MAN, WAN, etc.).
3+ years of experience specifically related to providing O&M to Multi-Level Security (MLS) and/or CDS implementations, integrations, accreditations, and operations.
3+ years of hands-on experience working with Linux-based platforms.
Specific experience with RHEL 6 and/or 7 is a plus.
Shall have 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).
Demonstrated experience of having a strong understanding of core IT Networking protocols, including, but may not be limited to, SSH, SCP, FTP, SSL, PIJ, VPN, SNMP, etc.
Demonstrated experience in Helpdesk coverage.