Linux Systems Administrator Jobs

UIC Government Services - Dahlgren, VA

Full-time

Dahlgren, VA

Professional, Scientific, and Technical Services

About the position

The Linux Administrator position at Bowhead in Dahlgren, VA, is a critical role responsible for the system administration and customer support of servers and workstations within a Research, Development, Testing, and Evaluation (RDT&E) environment. The successful candidate will utilize their expertise in Red Hat Enterprise Linux to provide technical problem-solving and in-depth consulting related to system operations. This role involves automating installation methods and system imaging, employing tools such as Kickstart and Ansible, and leveraging cryptographic knowledge to establish a public key infrastructure (PKI) for managing digital certificates and public-key encryption. In addition to these responsibilities, the Linux Administrator will implement DISA STIG guidelines and work within Configuration-Managed Environments. The role requires analyzing, designing, and implementing modifications to system software to enhance performance and rectify errors. The administrator will also be responsible for planning new hardware acquisitions, interacting with vendors, educating customers, and collaborating with various projects within the organization. Close collaboration with engineers is essential to assist them in utilizing workstations and servers for computationally intensive tasks. The position also entails supporting application installation, license management, software tracking, and backup/recovery of system configurations and user data files. The administrator will need to understand and utilize essential tools for file handling, command-line environments, and documentation. Operating running systems, managing users and groups, and configuring local storage are also key aspects of this role. The Linux Administrator will deploy, configure, and maintain systems, manage security configurations, and produce reports on system utilization. Additionally, shell scripting will be used to automate system maintenance tasks, and the administrator will configure networking services such as HTTP/HTTPS, DNS, SMTP, SSH, and NTP.

Responsibilities

• Utilize Red Hat Enterprise Linux system administration experience to provide technical problem solving and in-depth consulting relative to system operations.
• Automate 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 encryption.
• Implement DISA STIG guidelines and work within Configuration-Managed Environments.
• Analyze, design, and implement modifications to system software to improve and enhance system performance by correcting errors.
• Plan new hardware acquisitions, interact with vendors, educate customers, and collaborate with other projects within the organization.
• Work closely with engineers to help them use workstations and servers to solve their computationally intensive problems.
• Support application installation, license management, software tracking/distribution, and backup/recovery of system configurations and user data files.
• Understand and use essential tools for handling files, directories, command-line environments, and documentation.
• Operate running systems, including booting into different run levels, identifying processes, starting and stopping virtual machines, and controlling services.
• Configure local storage using partitions and logical volumes.
• Create and configure file systems and file system attributes, such as permissions, encryption, access control lists, and network file systems.
• Deploy, configure, and maintain systems, including software installation, update, and core services.
• Manage users and groups, including use of a centralized directory for authentication.
• Manage security, including basic firewall and SELinux configuration.
• Configure static routes, packet filtering, and network address translation.
• Set kernel runtime parameters.
• Produce and deliver reports on system utilization.
• Use shell scripting to automate system maintenance tasks.
• Configure system logging, including remote logging.
• Configure a system to provide networking services, including HTTP/HTTPS, DNS, SMTP, SSH, and NTP.

Requirements

• Minimum three to six years' experience in system administration of Linux-based servers and Linux-based workstations.
• Troubleshooting skills in RHEL 7/8/9 OS and basic knowledge of Networking fundamentals, specifically TCP/IP protocol suite and IP configuration.
• Working knowledge of security guidelines and policies (DISA STIGs) and tools (Evaluate-STIG, STIG-Manager).
• Knowledge of/experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent) is a plus.
• Specific experience with Red Hat Enterprise Linux (RHEL 8.x with RHEL 7.x and/or RHEL 9.x).
• Must meet DoD 8570 Information Assurance Workforce (IAWF) criteria or Information Assurance Technical (IAT) Level II certification at time of hire (i.e., Security+).
• Knowledge of corporate services including: DNS, SMTP, Splunk, Centralized patching solutions such as Red Hat Satellite, Automation solutions such as Ansible Tower/AWX.
• Knowledge of/experience with Single Sign-On solutions such as RHSSO; Virtualization platform management systems such as VMWare/VSphere/VCenter is a plus.
• Demonstrated experience managing the installation and maintenance of IT infrastructure.
• Experience working in an environment with rapidly changing job priorities.
• Experience with Service Now or similar Ticket Management system.
• Linux+ or Red Hat Certification preferred.

Nice-to-haves

• Experience with Tenable suite of products (Security Center, Nessus Scanner, Nessus Agent).
• Knowledge of Single Sign-On solutions such as RHSSO.
• Experience with virtualization platform management systems such as VMWare/VSphere/VCenter.