Principal/Sr. Principal Cross Domain Solutions Systems Administrator (AHT)

The Cross Domain Solutions Systems Administrator will maintain smooth operation of multi-user computer systems, including coordination with network administrators. Interacts with users and evaluates vendor products. Makes recommendations to purchase hardware and software, coordinates installation and provides backup recovery. Develops and monitors policies and standards for allocation related to the use of computing resources. Ancillary duties may include setting up administrator and service accounts, maintaining system documentation, tuning system performance, installing system wide software and allocating mass storage space. This requisition is open as a dual level opportunity. We will consider candidates at a Level 3 and Level 4: Basic Qualifications: Level 3: Bachelor’s degree in Computer Information Systems, or related discipline with 5 years of experience / 3 years with Masters Level 4: Bachelor’s degree in Computer Information Systems, or related discipline with years of experience / 6 years with Masters Ability to obtain and maintain Active DoD Secret Clearance Current DoD 8570 Certification IAT Level II or higher (Security+, CISSP, etc.) or ability to obtain one within 6 months DoD 8570 Certification in a primary OS (preferably Linux) Demonstrated experience with Red Hat Enterprise Linux (RHEL) server & workstation administration in a classified environment. Solid understanding of remediating security vulnerabilities; Experience hardening Linux systems in accordance with RMF and STIGs Demonstrated experience performing administration on VMware technologies (or related) Demonstrated experience maintain smooth operation of multi-user computer systems, including coordination with network, software, and system engineers, PC desktop technicians, project managers, end users, and customer and IT management. Demonstrated experience communicating effectively at all levels of the organization, with internal or external customers, in written and oral formats. Preferred Qualifications: Active DoD Secret Clearance Experience operating under and managing systems within NISPOM Chapter 8, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG information system environments. Experience configuring System Build Automation using Ansible, Red Hat Ansible Tower, Red Hat Automation Controller Analyze internal or external customer requirements and determine equipment and software requirements for solutions to problems by means of automated systems. Recommend and implement system enhancements that will improve the performance and reliability of the system including installing, upgrading/patching, monitoring, problem resolution, and configuration management. Provide backup and recovery services; manage file systems and disk space; manage virus protection on a routine basis. Create and maintain user and computer accounts and modify file permissions and security access lists. Test new releases of products to ensure compatibility and minimize user impact. Develop and document technical processes and procedures as needed. Make recommendations to purchase hardware, software, and system components. Interact, meet, discuss, and troubleshoot issues with vendors; evaluate vendor products, services, and suggestions. Maintain security audit and logging information on all classified networked and standalone computers as directed by the Information Systems Security Manager (ISSM). Prepare security documentation for Cyber Security team. Report project status as required for all recurring and non-recurring efforts. Work under minimal direction and independently determine and develop an approach to solution. Experience with NAS storage solutions Solid understanding of Enterprise-level storage concepts to include all commonly used RAID-levels Identity Management (Single Sign-On) experience VMware/Vsphere, Trellix (McAfree) antivirus and ESXi (6.x or higher) configuration and management experience Experience with host-based firewall implementations and configuration (Redhat “iptables”)