Senior Linux Systems Administrator (NetServ)

SENIOR LINUX ADMINISTRATOR (NETSERV)Bowhead seeks a Senior Linux Administrator (NetServ) to join our team in Dahlgren, VA. The Senior Linux Administrator(NetServ) is responsible for system administration and customer support of servers and workstations in a Research, Development, and Testing and Evaluation (RDT&E) environment.Utilize Red Hat Enterprise Linux system administration experience to provide technical problem solving and in-depth consulting relative to system operationsAutomate installation methods and system imaging (e.g. Kickstart/Ansible)Use cryptographic experience to set up public key infrastructure (PKI) to create, manage, distribute, use, store, and revoke digital certificates and manage public-key encryptionDISA STIG implementation and work within Configuration-Managed EnvironmentsAnalyze, design, and implement modifications to system software to improve and enhance system performance by correcting errorsPlan new hardware acquisitions, interact with vendors, educate customers, and collaborate with other projects within the organizationWork closely with engineers to help them use workstations and servers to solve their computationally intensive problemsSupport application installation, license management, software tracking / distribution and backup/recovery of system configurations and user data filesUnderstand and use essential tools for handling files, directories, command-line environments, and documentationOperate running systems, including booting into different run levels, identifying processes, starting and stopping virtual machines, and controlling servicesConfigure local storage using partitions and logical volumesCreate and configure file systems and file system attributes, such as permissions, encryption, access control lists, and network file systemsDeploy, configure, and maintain systems, including software installation, update, and core servicesManage users and groups, including use of a centralized directory for authenticationManage security, including basic firewall and SELinux configurationConfigure static routes, packet filtering, and network address translationSet kernel runtime parametersProduce and deliver reports on system utilizationUse shell scripting to automate system maintenance tasksConfiguring system logging, including remote loggingConfigure a system to provide networking services, including HTTP/HTTPS, DNS, SMTP, SSH and NTPMinimum five to eight years' (5-8) experience in system administration of Linux-based servers and Linux-based workstationsHigh School Diploma required; Bachelros degree preferredIdeal Linux Admin will have troubleshooting skills in RHEL 7/8/9 OS and basic knowledge of Networking fundamentals, specifically TCP/IP protocol suite and IP configurationIn addition, working knowledge of security guidelines and polices (DISA STIGs) and tools (Evaluate-STIG, STIG-Manager)Knowledge of / experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent) is a plusSeeking specific experience with the following operating systems and services is required: Red Hat Enterprise Linux (RHEL 8.x with RHEL 7.x and/or RHEL9.x a plus) Must meet DoD 8570 Information Assurance Workforce (IAWF) criteria or Information Assurance Technical (IAT) Level II certification at time of hire (i.e., Security+). Have knowledge of corporate services including: DNS, SMTP, Splunk, Centralized patching solutions such as Red Hat Satellite, Automation solutions such as Ansible Tower / AWXKnowledge of / experience with: Single Sign on solutions such as RHSSO; Virtualization platform management systems such as VMWare / VSphere / Vcenter is a plusDemonstrated experience managing the installation and maintenance of IT infrastructure Experience working in an environment with rapidly changing job prioritiesExperience with Service Now or similar Ticket Management system Linux+ or Red Hat Certification preferredPhysical Demands:Must be able to lift up to 10-15 poundsMust be able to stand and walk for prolonged amounts of timeMust be able to twist, bend and squat periodicallySECURITY CLEARANCE REQUIREMENTS: Must be able to obtain and maintain a security clearance at the Top Secret level. US Citizenship is a requirement for this contract.#LI-JR1

Created: 2025-10-04