Who We Are:  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.  What We Have to Offer:  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!  Summary   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. Essential Duties and Responsibilities   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 Qualifications and Education Requirements   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 Ability to obtain and maintain a 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). Preferred Skills   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+ Security Responsibilities   Must comply with 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.     Incumbent must be eligible for DoD Personal Security Clearance.   Due to U.S. Government contract requirements, only U.S. citizens are eligible for this role.   Work Environment   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. Physical Demands   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 Other Duties   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.     Applicants needing reasonable accommodations should contact their recruiter at any point in the recruitment process.  If you need assistance to submit your application because of incompatible assistive technology or a disability, please contact us at [email protected]  About CAE At 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. Stay informed about recruitment scams. Learn how to identify legitimate CAE communications and avoid fraudulent offers. [Learn more →] Position Type Regular Equal Opportunity Employer CAE is an equal opportunity employer committed to providing equal employment opportunities to all applicants and employees without regard to race, color, national origin, age, religion, sex, disability status, protected veteran status, or any other characteristic protected by federal, state or local laws. At CAE, everyone is welcome to contribute to our success. Applicants needing reasonable accommodations should contact their recruiter at any point in the recruitment process. If you need assistance to submit your application because of incompatible assistive technology or a disability, please contact us at [email protected]. Data Privacy Privacy Statement | CAE As part of our process, we may use AI‑supported tools to help review applications, with human decision‑making 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. Welcome to CAE! As a global leader in Civil Aviation and Defense & Security across 40 countries, we advance together as One CAE, fueled by thousands of passionate individuals operating in a culture where everyone can thrive. We hold ourselves accountable for building an inclusive community at every level, and our comprehensive benefits support you professionally and personally. Together, we are All For shaping a future where safety, sustainability, and inclusivity lead the way. Join us and be part of something bigger—where your impact reaches beyond CAE and helps shape the world of tomorrow. Not quite ready to apply? 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