OT Systems Administrator

OT Systems Administrator Part Time BAE Systems Kingsport

TN 37660 USA

Posted 04/23/2026 Job Description Job Description BAE Systems, one of the worlds leading defense contractors, is hiring a Principal Industrial Controls / Operational Technology (OT) System Administrator to support the Holston Army Ammunition Plant ( HSAAP) in Northeast Tennessee. We are looking to hire an experienced OT Systems Administrator to help develop, manage, and maintain our companys Operational Technology (Process Controls) computer systems. The individual will work alongside the Holston control systems support team to support continuous operations and modernization projects for the manufacturing facility. Ability to support a 24/7 operation with after hours on-call support included. This role requires regular presence in a manufacturing or fabrication environment. The incumbent must be able to access and safely navigate production areas which may include climbing, kneeling, stooping, and working in confined spaces. Must also be able to comply with all requirements including the use of required personal protective equipment (PPE) in accordance with company policy.

OT Systems Administrator Responsibilities:

Install, maintain and troubleshoot Windows-based OT computer systems, servers, and software Work closely with manufacturing to maintain continuous operations and to identify future needs/improvements Support modernization projects by specifying, designing, and implementing computer/server solutions Integrate modern security solutions with existing control systems and computers/servers Assist Cybersecurity team with incident response and investigation Support continuous improvement by staying current on latest industry standards Administration of computer/server policies and user accounts Network Storage Management and File Transfer Computer Backups and Restoration Development of computer scripts and Scheduled Tasks Management of custom Windows Applications (VB, JavaScript) Maintain computer / server documentation Required Education, Experience, & Skills Successful applicant will be able to work independently, demonstrate strong initiative, an ability to organize daily tasks with minimal supervision and demonstrates the following: Bachelor's in Computer Science or related technical field, or equivalent industry experience, and 6+ years relative experience with a Bachelors or 4+ years with a Masters Degree Proven experience with networks in an Operational Technology (OT) environment with knowledge of industrial control systems and process controls Experience supporting a Windows-based environment Experience with design elements aimed at improving security, performance, and resiliency of control computers/servers Experience with virtual computing Experience with Data storage and Backup systems Ability to support a 24/7 operation with after hours on-call support included. Preferred Education, Experience, & Skills Familiarity with Process Automation Protocols (Profinet, EtherNet/IP, Modbus TCP/IP, etc.) and Fieldbus Protocols (Profibus, Modbus, etc.) Experience with SQL Server / MS Access database maintenance and administration Experience with

HMI / SCADA

development ( PlantPAx, PCS7, Ignition, etc.) Windows Domain Administration (User and Group Policies) Experience with Windows Exchange Server Experience with Veeam/Exagrid backup systems Experience with MyID Experience working in an air gapped environment Hyper-V / VMware Management (Clients and Hosts) Help Desk Support for common user issues / requests Experience managing antivirus updates Experience with SCCM and / or WSUS for Windows updates CompTIA A+ Certification CompTIA Network+ Certification CompTIA Security+ Certification Microsoft Certified Solutions Associate (MCSA) Microsoft Certified Solutions Expert (MCSE) VMware Certified Professional (VCP) Active Secret Clearance preferred Experience with industrial networks and protocols Experience with Multi Factor Authentication (MFA) Experience supporting cybersecurity auditing Experience supporting Process Controls and Industrial Automation Pay Information

Full-Time Salary Range:

$96623 - $164259 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 Platforms & Services 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 its 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 teammaking a big impact on a global scale. At BAE Systems, youll find a rewarding career that truly makes a difference. The Platforms & Services (P&S) sector under BAE Systems, Inc does the big stuff: the armored combat vehicles, naval guns, missile launchers, and ship repairjust to name a few. Our employees take pride in the work they do and why they do it. They are on the front lines every day, building our products to protect the lives of those who serve. We may be biased, but we think P&S does some of the coolest work around, and we think you will too. Job Detailsback to top Location Kingsport, TN, 37660, United States Categories Engineering Location Mapback to top