Mid-Level Linux System Administrator IRES - HSV

Position Title: Mid-Level Linux System Administrator

Location: Redstone Arsenal, Huntsville, AL

Relocation Assistance: None available at this time

Remote/Telework: NO - Not available for this position

Clearance Type: DoW Secret

Shift: Day shift

Travel Required: Up to 10% of the time

Description of Duties:

The Mid-Level Linux System Administrator supports the Missile Defense Agency (MDA) on the Integrated Research and Development for Enterprise Solutions (IRES) contract. 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 (DTA) 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.

The successful candidate will:

• 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.

Resumes, in month and year format, must be submitted with application in order to be considered for the position. The selected candidate may be assigned as an employee for one of our teammate companies.

Basic Requirements:

• 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

Desired Requirements:

• 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.

This position will be posted for a minimum of 3 days. If a candidate has not been selected at that time, it will continue to be posted until a suitable candidate is selected or the position is closed.

Compensation Details:

$95,000 – $135,000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/12/2026 - 08/20/2026

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters.