Senior Systems Administrator

Job Description We put our customers first – exemplified by our missions: “We Protect Those Who Protect Us®” and “We Innovate for Those Who Move the World.” Sound like a team you want to be a part of? Come build your career with BAE Systems. Seeking an experienced IT systems administrator to support our San Diego, CA classified lab environments with expertise in setting up and managing Windows and Linux based systems and Virtual Machines. A successful candidate will be a well-rounded administrator joining a team supporting internal customers, designing, implementing, and managing lab infrastructure to meet the customer requirements. In this role, you will build, configure, administer, and troubleshoot Windows, Linux, and VM servers/workstation hardware and software. Support the design and implementation of workgroup-scale networks, build and manage authentication, file-share, and other collaboration servers to support groups of heterogeneous client systems. Work with industrial security to develop and apply hardening configurations for systems for classified use to RMF requirements; Document system configuration for new and existing systems; Experience with centralized authentication technologies such as LDAP and Active Directory domains in supporting Windows/Linux cross-platform clients is desirable. willing to respond to occasional off-hours outages and take part in subsequent service restoration efforts. This is not inclusive of all job duties. Maintains operation of multi-user computer systems, including coordination with network engineers. Duties may include setting up administrator and service account, maintaining system documentation, turning system performance, installing system wide software, and allocate mass storage space. Makes recommendations to purchase hardware and software, coordinates installation, and provides backup recovery. Develops and monitors policies and standards related to the use of computing resources. CompTIA Security+ (or equivalent) and a TS/SCI Clearance will be required to work in the environment. Required Education, Experience, & Skills US Citizenship. Active U.S. Top Secret Security Clearance with SCI eligibility and CompTIA Security+ or equivalent DoD 8570 IAT Level II certification. 5-7 years of experience (4+ years of experience with a degree) as a system administrator. Direct experience configuring and managing Lab-in-a-Box (LIB) environments. Familiarity with data spill response protocols and secure system sanitization. Hands-on experience with Nessus, VMware vSphere, Veeam, and Trellix ePO. Strong Active Directory experience, including domain controller and GPO management. Working knowledge of Splunk in secure environments (including alerting and data retention strategies). Understanding of DoD and IC security standards, including RMF, NISPOM, and STIG compliance. Preferred Education, Experience, & Skills Active U.S. TS/SCI Security Clearance. 4+ years of experience working in a classified environment Experience with system accreditation (e.g., SSP development, POA&M tracking). Familiarity with classified lab setups, test bed environments, or R&D support. Exposure to cross-domain solutions, enclave management, or SAP/SAR environments. // Scripting experience (PowerShell, Python) to automate common sysadmin tasks. Experience supporting audit and inspection activities 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. About BAE Systems Electronic Systems BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it’s what we do at BAE Systems. Working here means using your passion and ingenuity where it counts – defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team—making a big impact on a global scale. At BAE Systems, you’ll find a rewarding career that truly makes a difference. Electronic Systems (ES) is the global innovator behind BAE Systems’ game-changing defense and commercial electronics. Exploiting every electron, we push the limits of what is possible, giving our customers the edge and our employees opportunities to change the world. Our products and capabilities can be found everywhere – from the depths of the ocean to the far reaches of space. At our core are more than 14,000 highly talented Electronic Systems employees with the brightest minds in the industry, we make an impact – for our customers and the communities we serve. This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.

Created: 2026-03-04