Linux Administrator, Expert - Secret - Springfield, VA

Responsibilities:
·         Design, develop, evaluate, and modify physical and virtual compute environments throughout systems life cycle.
·         Participate in system conceptual design and documentation
·         Determine system specifications, input/output processes, and working parameters for hardware/software compatibility.
·         Creates and maintains detailed system documentation. 
·         Provides system/equipment/specialized training and technical guidance. 
·         Provide input to briefings, transitioning concepts to execution, course of action (COA) development, and assisting in project technical planning and implementation.
·         Develop standard operation procedures (SOPs) and system documentation.
·         Collaborate with managers, network engineers, team members, and customer on solutions and issues.
·         Maintains current knowledge of rapidly changing technology, always on the lookout for new technologies, and works with management to evolve current processes. 
·         Download, stage and deploy systems-related security policies and updates to maintain information system compliance with DISA security policies and procedures (STIGs, IAVAs, etc.).
·         Participate in special projects as assigned.
·         Develop scripts and automation (BASH, Python, Ansible, Puppet, etc.) to perform recurring systems administration tasks, automate installs, gather metrics, etc.
·         Administer Red Hat Enterprise Linux environments with an emphasis in the following areas:
·         Red Hat Enterprise Linux 7/8
·         Red Hat Identity Manager
·         Core Linux Infrastructure services (CA, [openssl], DNS [bind], DHCP [dhcpd], NTP [ntpd/MicroSync], Red Hat Identity Management [ipa-server], File Share [nfs, glusterfs])
·         Automation Technologies (Ansible/Puppet)
·         Logging Technologies (syslog-ng/Splunk)
·         Administer VMware virtual environments to include ESXi hosts, vCenter appliances, VxRail HCIs, and VSANs.
·         Deploy/Patch Red Hat and core infrastructure services software.
·         Upgrade and/or install, configure and maintain software as needed (GitLab, Splunk, NorthStar/Paragon, Puppet, Red Hat Identity Management, OpenNMS, VMware, IDPA, Firmware, etc)
·         May be required to work evening, weekend, and holiday hours as required.

Required Qualifications: 
·         15+ years of Linux system administration experience is required.
·         BA/BS Degree – may substitute additional years of experience.
·         Active SECRET clearance.
·         Must be IAT level II compliant with DoD 8570.1
·         Microsoft Certified System Administrator.
·         ITIL V3 or V4 Foundation within six months of hire.
·         Must possess Red Hat Certified System Administrator (or above) certification and obtain new related certifications as released.
·         Must have experience developing ansible playbooks, puppet modules, python scripts, and bash scripts.
·         Experience with infrastructure including but not limited to: data center operations, server hardware, operating systems (Red Hat Enterprise Linux 7/8), web servers (Apache, Nginx), virtualization (VMware), networking, storage, monitoring, etc.
·         Experience in infrastructure design and operations including firewall rules, fail over, monitoring, diagnostics, and performance tuning, etc.
·         Ability to handle multiple competing priorities in a fast-paced environment.
·         May be required to work evening, weekend, and holiday hours as required.
·         Depending on job assignment, additional specific certifications may be required.

Preferred Qualifications:
·         RHCSA or RHCE.
·         Certified ServiceNow Administrator (CSA) within six months of hire.
·         Experience supporting remote systems.
·         Experience with HBAC and RBAC policy creation in Red Hat Identity Manager.
·         Experience with direct customer support for both internal and external customers.
·         Experience with Server STIGs, patching, Tenable, ACAS, SCCM, and IAVA vulnerabilities.
·         Experience with automation processes and tools.
·         Experience with implementing and maintaining systems documentation.
·         Experience with developing training for both internal and external junior system administrators.
·         Experience with managing, monitoring and responding to key server infrastructure alerts.
·         Experience with Puppet, Ansible, VMware and IDPA technologies.
·         Experience with current scripting languages: PowerShell, BASH, Python, Ansible, Puppet, etc.