Senior System Admin
CAE USA
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Job summary
CAE USA is seeking a mission-focused Senior System Administrator in Arlington, TX, to support IT operations, cyber readiness, and RMF compliance in a defense contracting setting. You will master both Windows and Linux systems, including hardening, deployment, maintenance, and patching across hybrid environments.
The role involves building and maintaining secure infrastructure, automating deployments, and collaborating with engineers to ensure high availability and cybersecurity readiness in line
Qualifications
- Multidisciplinary cyber security and system administration experience.
- Hands-on Linux and Windows server administration with DoD RMF alignment.
- Experience with patching, hardening, and vulnerability management.
Responsibilities
- Administer mixed Linux/Windows infrastructures and hypervisor environments.
- Deploy, configure, and maintain automation for system deployment.
- Monitor reliability, perform lifecycle recommendations, and answer technical questions.
- Support DoD security requirements and DI DoDI 8510.01 compliance.
Skills
Education
Tools
Job description
CAE Vision: Our vision is to be the worldwide partner of choice in defense and security, and civil aviation by revolutionizing our customers' training and critical operations with digitally immersive solutions to elevate safety, efficiency and readiness.
- CAE Defense & Security Mission: CAE's Defense and Security business unit focuses on helping prepare military customers to develop and maintain the highest levels of mission readiness.
- CAE Values: Empowerment, Innovation, Excellence, Integrity and OneCAE make us who we are and we strive to make a difference in the world while helping each other succeed.
- Comprehensive and competitive benefits package and flexibility that promotes work-life balance
- A work environment where all employees are valued, respected and safe
- Freedom to succeed by enabling team members to deliver, take initiatives and make decisions
- Recognition, professional development, advancement and having fun!
We are seeking a mission-focused Senior System Administrator to support IT operations, advanced technical support and cybersecurity readiness in a defense contracting environment. The successful candidate will demonstrate expert proficiency in both Microsoft Windows and Linux systems administration, including hardening, deployment, configuration, maintenance, and patch management aligned with DoD cybersecurity requirements. This role directly supports compliance with DoDI 8510.01 (RMF), NIST 800-53, and applicable DISA STIG requirements.
Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.
Responsibilities will include supporting all aspects of building, documenting, and maintaining mixed (combination of both Windows and Linux) closed room infrastructures and setup and management of software development environments. In addition to supporting engineers and continuously solving problems you will create, test, update and execute automated and semi-automated procedures for configuring all the components of our systems both in-house and at our customer sites.
- Linux System Administration
- Windows System Administration
- VMWare Administration
- Network Administration
- Infrastructure setup and maintenance
- Development of Automated system deployment capabilities
- Supports and monitors infrastructure hardware systems, operating systems and infrastructure applications to ensure reliability and availability of infrastructure services.
- Contributes and makes recommendations on the lifecycle of Infrastructure technologies
- Answers technical questions
A dedicated senior professional with multidisciplinary experience in cyber security and system administration.
- A BS/BA in an engineering, computer science, or information technology discipline, Master's degree or above preferred.
- Minimum of 5 years of related experience.
- Linux System Administration
- Windows System Administration
- Windows Server System Administration
- VMWare Administration
- Network Administration
- Knowledge of hardware and expertise in command line tools.
- Event, audit, and syslog analysis.
- Knowledge of TCP/IP networking. Experience with managed switch and router setup.
- Experience with scripting languages such as bash, csh, Python, and Powershell.
- Advanced problem-solving skills.
- Attention to detail and strong communications skills to effectively interact with peers, project vendors and other teams.
- Ability to obtain and maintain a CompTIA Security + Certification
- DoD Secret Clearance is required
- Due to U.S. Government contract requirements, only U.S. citizens are eligible for this role.
- Compliance with DoD 8140.03 (such as CISSP, Security + and an OS Certification).
Prefer candidates who already have an active DoD security clearance. Prefer candidates who already have active CompTIA Security + certification or equivalent.
- An advanced degree in an engineering, computer science, or information technology discipline is preferred
- Strong Windows Server System setup and administration.
- Windows/Linux integration: File Sharing, authentication.
- Experience with Domain Controller setup and creation, management, update, and deployment of Group Policy Objects.
- Configure, manage, and monitor storage systems (NAS, SAN, NFS etc).
- Experience configuring Cisco routers and switches.
- Experience configuring HP/Aruba routers and switches
- Experience configuring Juniper switches
- Experience with Custom Automated Operating system deployment, such as Windows Deployment Toolkit.
- Experience with Configuration Management (GitHub experience desired).
- Setup and management of Centralized Auditing.
- Setup and management of centralized patching (such as WSUS).
- Experience with System hardening (Implementation of the Security Technical Implementation Guides (STIG)).
- Experience with vulnerability scanners such as ACAS/Nessus and SCAP.
- Experience with version control tools such as ClearCase, Git, Bitbucket.
- Experience supporting DoD or classified systems.
- Familiarity with SIEM tools (e.g., Splunk, SolarWinds SEM).
- Relevant certifications: RHCSA, Windows Server Hybrid Administrator Associate, Certified Information System Security Professional (CISSP) and Security+
Must complywith all company security and data protection / usage policies and procedures. Personally responsible for proper marking and handling of all information and materials, in any form. Shall not divulge any information, or afford access, to other employees not having a need-to-know. Shall not divulge information outside company without management approval. All government and proprietary information will be accessed and stored electronically on company provided resources.
- DoD Secret Clearance is required
The job is performed in an office environment, often in secure closed areas. Job requires use of normal office equipment and occasional access to rack mounted hardware. Domestic and international travel up to 50% of the year may be required.
The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job.
- Ability to work in standard office environment
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for their job. Duties, responsibilities, and activities may change at any time with or without notice.
CAE USA Inc. is an equal opportunity employer, and all qualified applicants will be considered for employment without regard to any protected characteristic, including disability and protected veteran status, as defined under federal, state, or local laws.
About CAE, our mission is clear: to help make the world a safer place. For nearly 80 years, we've driven innovation in simulation, training, and mission readiness to support critical operations worldwide. By leveraging advanced technologies, we empower our customers to operate smarter, faster, and more sustainably. Join a purpose-driven organization where bold ideas are encouraged, collaboration drives progress, and your growth fuels our shared success.
As part of our process, we may use AIsupported tools to help review applications, with human decisionmaking at every step. CAE thanks all applicants for their interest. However, only those whose background and experience match the requirements of the role will be contacted.
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