Senior IT Systems Administrator

Systems AdministratorWe put our customers first – exemplified by our missions: "We Protect Those Who Protect Us®" and "We Innovate for Those Who Move the World." Come build your career with BAE Systems. We are seeking an experienced Systems Administrator to implement, maintain, and support our enterprise IT infrastructure consisting of Windows and Linux systems. The ideal candidate will have strong experience managing servers, identity services, virtualization platforms, endpoint systems, and security controls while demonstrating the ability to troubleshoot complex technical issues and improve operational efficiency. The Systems Administrator will play a key role in ensuring system availability, performance, security, and reliability while collaborating with IT teams, business stakeholders, and vendors to deliver effective technology solutions.ResponsibilitiesAdminister and maintain Windows Server and Linux server environments.Manage Active Directory, Group Policy, DNS, DHCP, file services, and authentication services.Perform server installation, configuration, upgrades, migrations, and lifecycle management.Monitor system health, performance, capacity, and availability.Troubleshoot complex operating system, application, and infrastructure issues.Maintain enterprise workstations, servers, and endpoint management solutions.Virtualization & InfrastructureManage VMware vSphere, Horizon, or other virtualization platforms.Deploy and maintain virtual machines, templates, snapshots, and resource allocation.Support storage, backup, and disaster recovery solutions.Perform system recovery testing and validate backup integrity.Cloud & Enterprise ApplicationsSupport Microsoft Entra ID (Azure AD), identity synchronization, and cloud-based authentication.Assist with hybrid infrastructure and cloud migration initiatives.Automation & Process ImprovementDevelop and maintain PowerShell, Bash, or Python scripts to automate administrative tasks.Improve operational efficiency through automation, documentation, and standardization.Create and maintain technical documentation, procedures, and knowledge articles.Security & ComplianceImplement security best practices across servers, endpoints, and applications.Apply operating system patches, security updates, and vulnerability remediation.Manage endpoint security tools, encryption technologies, and access controls.Support audits, compliance requirements, and cybersecurity initiatives.Support & CollaborationProvide Tier 1 & 2 escalation support for complex technical issues.Collaborate with network, security, and application teams.Participate in after-hours maintenance activities and incident response when required.Required Education, Experience, & SkillsUS Citizenship and ability to obtain a US government secret clearanceCompTIA Security+ or equivalent DoD 8570 IAT Level II certification or ability to obtain within 6 months for hire5-7 years of experience (4+ years of experience with a degree) as a system administrator.Strong experience supporting enterprise Windows Server environments.Advanced knowledge of Active Directory, Group Policy, DNS, DHCP, and Windows troubleshooting.Experience with virtualization technologies such as VMware or Horizon.Strong troubleshooting, analytical, and documentation skills.Preferred Education, Experience, & SkillsActive U.S. Secret Security Clearance.Bachelor's degree in related fieldExperience administering Linux distributions such as Red Hat Enterprise Linux, Rocky Linux, Ubuntu, or similar platforms.Experience with vulnerability management platforms.Experience supporting regulated or highly available environments.Pay Information Full-Time Salary Range: $97008 - $164914 Please note: This range is based on our market pay structures. However, individual salaries are determined by a variety of factors including, but not limited to: business considerations, local market conditions, and internal equity, as well as candidate qualifications, such as skills, education, and experience. Employee Benefits: At BAE Systems, we support our employees in all aspects of their life, including their health and financial well-being. Regular employees scheduled to work 20+ hours per week are offered: health, dental, and vision insurance; health savings accounts; a 401(k) savings plan; disability coverage; and life and accident insurance. We also have an employee assistance program, a legal plan, and other perks including discounts on things like home, auto, and pet insurance. Our leave programs include paid time off, paid holidays, as well as other types of leave, including paid parental, military, bereavement, and any applicable federal and state sick leave. Employees may participate in the company recognition program to receive monetary or non-monetary recognition awards. Other incentives may be available based on position level and/or job specifics.