Seeking Sr. Linux/Unix Engineer to develop, operate and maintain highly complex technology systems in a classified environment. Participate in the integration of processes and methodologies to ensure the performance of the total system. Support senior technical personnel and project managers in various technical activities related to system and technical system development. Required: Active TS ClearancePreferred: Active TS with Active SCI Technical Areas with demonstrated technical experience in the following areas: . Linux - CentOS 6/7 , RedHat 6/7 , Ubuntu 16-19. System Services - NTP, DNS, DHCP, NFS, KVM, LDAP. Hypervisor technologies - KVM, OVirt, OpenStack , OpenShift and VMware.. Container technologies - Docker Engine, Docker Compose , Linux Containers (LXD). Network Routing/switching - Layer 2 and Layer 3 ( Cisco, Juniper, Aruba etc.). High Speed data networking ( InfiniBand , Mellanox and other technologies ) Security Areas:. Demonstrated understanding of government security policies.. Technical support of applications like ACAS software.. Ability to run security scans , read reports and execute remediation steps. Technical Documentation :. Ability to effectively communicate across a large team.. Proven ability to write technical documents related to:o System Design / Network diagramso Identify and document processes and procedures for Tier II and Tier I admins.o Ability to support security related documentation and processes.