Linux Systems Administrator

At cb5, we are on a mission to find exceptional talent. Our tight-knit organization is led by five brothers, each technology leaders in their respective technical fields and driven to foster a culture of excellence through solidarity. We are seeking a Mid-Level Linux System Administrator to serve as a member of Systems Integration team. This role is onsite at a government location in Huntsville, AL and has very limited travel requirements., The candidate will:

· Administer the operations of computer systems with a primary focus on Linux operating systems, servers, and end-user workstations.

· Administer Linux patching and configuration management tools (e.g., Red Hat Satellite, Ansible) for updating, patching, and maintaining the domain.

· Perform hardening and remediation of operating systems and DISA STIG compliance to reduce cybersecurity risks.

· Deploy, configure, and automate environments using vCenter, Bash/Python scripting, and Ansible.

· Administer Container Platforms such as OpenShift, as well as maintain repositories/Registries.

· Manage and sustain a primarily Linux workstation and server-based enterprise environment.

· Maintain and manage Secure Host Baselines for LINUX (primarily) and Windows.

· Coordinate, execute, and document authorized secure data transfers across network boundaries, serving as a designated Data Transfer Agent (OTA) in compliance with security protocols.

· Conduct daily system monitoring, system backup and restoration, and application upgrades to ensure optimal and continuous system operations.

· Develop and maintain system administration procedures and baseline configuration documentation.

· Be responsible for ensuring system software installs, maintenance, break/fix activities, and cyber security mitigations are performed in accordance with established policies, procedures, and service level agreements.

· Focus on creating, upgrading, managing, and sustaining physical and virtual workstations and servers.

· Be able to quickly learn challenging concepts, decompose difficult service problems, and provide resolution.

· Be able to create and follow standard processes and clearly document results.

· Effectively function as a self-starter and identify risks, issues, and opportunities to the System Administration team.

· Have excellent presentation, oral, and written skills to facilitate effective and efficient interchanges with senior customer management and customers.

· Have a “can-do” attitude, be able to work in a very high-pace and dynamic environment and embrace change.

Qualifications

· Must have 3, or more, years of directly related experience in Linux systems administration (e.g., Red Hat Enterprise Linux 7, 8, or 9 environments).

· Must have experience with Linux configuration management, automated provisioning, and patching (e.g., Red Hat Satellite, Ansible).

· Must have experience administering Linux operating systems within a virtualized environment (such as VMware vSphere/vCenter).

· Must have experience developing and executing Bash and/or Python scripts.

· Must have experience managing Linux authentication, identity management, and directory services (e.g., IdM, LDAP, SSSD, Active Directory integration).

· Must have experience configuring core Linux networking services (DNS, DHCP, NTP, SSH) and storage management (LVM, NFS).

· Must have a current DoD 8570/8140 IAT Level II certification or higher (CCNA-Security, CySA+, GICSP, GSEC, Security+, CND, or SSCP).

· Must have an active DoW Secret Security Clearance

· Must be able to obtain an active DoW Top Secret Security Clearance

Preferred Qualifications

· Have a current Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) certification

· Have experience with Windows systems administration (Windows Server 2019/2022 and Windows 10/11) and Active Directory.

· Have experience with Windows-based deployment and patching tools (WSUS, SCCM) and Group Policy Objects (GPOs).

· Have work experience with PowerShell Scripting.

· Have experience with managing CA certificate servers.

· Have experience managing PXE/Kickstart servers for automated OS deployments.

· Have experience with 2FA to include RSA and PKI.

· Have experience with Virtualization of services (VMware vSphere/vCenter).

· Have experience using BMC Remedy or similar ITSM ticketing systems.

· Have a working knowledge of Configuration Management processes.