Sr. Windows/RHEL System Administrator - Huntsville, Alabama

Job Description

Job Description

Davidson has distinguished itself in the aerospace and missile defense industry with an outstanding reputation for excellence. Specifically, we're recognized for hiring noted experts, experienced engineers and scientists dedicated to designing and delivering advanced, intelligent technology solutions in defense of our Nation.

Davidson Technologies is seeking a Sr. Windows/RHEL System Administrator in Huntsville, Alabama to support the Integrated Battle Command System (IBCS) program.

Key Responsibilities

• Administer Windows 10/11 clients and Windows Server 2019/2022 hosts, including virtualization platforms (Hyper‑V/VMware).
• Manage Active Directory forests, OU structure, group policy, DNS, file sharing (SMB/CIFS) and NFS services.
• Develop and maintain PowerShell and batch scripts for provisioning, software deployment and remediation.
• Create and run Ansible playbooks for cross‑platform (Windows & RHEL) automation (bonus).
• Apply DISA STIGs, ACAS scan remediations and Evaluate‑STIG tools; perform security‑focused OS/software updates and hardening.
• Administer Microsoft Office 365, Teams, SharePoint and related services.
• Diagnose and resolve Windows OS, application and networking issues; provide Level 2/3 support.
• Participate in Agile ceremonies (sprint planning, stand‑ups) and contribute to Git/GitLab repositories and CI/CD pipelines (bonus).
• Produce run‑books, SOPs and configuration documentation; mentor junior staff on hybrid Windows/Linux operations.

Required Qualifications

• CompTIA Security+ (CE) certification or higher.
• 10 years experience in Windows administration within a secure, multi‑OS environment.
• Proficiency with Windows 10, Windows 11, Server 2019 and Server 2022.
• Experience with AD, DNS, file sharing, group policy and NFS.
• Advanced PowerShell scripting and batch scripting skills.
• Patch management experience (WSUS, SCCM or equivalent).
• Familiarity with DISA STIGs, ACAS and Evaluate‑STIG processes.
• Strong written and verbal communication for documentation and stakeholder interaction.
• Ability and willingness to troubleshoot urgent, high-visibility issues

Preferred (Bonus) Qualifications

• System administration experience with Red Hat Enterprise Linux (RHEL)
• Experience designing and maintaining Ansible playbooks for Windows and RHEL.
• Participation in Agile development (Scrum/Kanban).
• Git/GitLab repository management and branching strategies.
• Involvement in DevOps pipelines (Jenkins, GitLab CI).
• Virtualization experience (VMware ESXi, KVM).
• Monitoring tools experience (Splunk, SolarWinds, Prometheus).

Key Skills & Competencies

• Excellent problem‑solving and root‑cause analysis.
• Ability to work under strict security and compliance constraints.
• Collaborative mindset; works effectively with Linux, network, and security teams.
• Detail‑oriented documentation and change‑control processes.
• Continuous‑learning attitude for emerging Windows and hybrid‑cloud technologies.

Clearance:

• Must have an Active DoD Secret security clearance