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28 system administrator jobs found

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General Dynamics Mission Systems, Inc
Feb 24, 2026
Space Force - Linux Administrator with AWS Skills
General Dynamics Mission Systems, Inc Scottsdale, AZ, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : [Department of Defense Secret security clearance is preferred at time of hire.] Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position   The Linux Administrator provides infrastructure support for ServiceNow MID servers, application nodes, RDS instances, and supporting systems within a self-hosted network enclave. This role combines Linux system administration with cloud infrastructure expertise to...
Lockheed Martin
Feb 06, 2026
Information System Security Manager (ISSM Level 5)
Lockheed Martin Fort Worth, TX, USA
Description: Do you want to be part of a culture that inspires employees to think big, perform with excellence and make the impossible become reality? Are you looking for a fast paced, dynamic work environment that is blazing through uncharted territory and accepting the multiple challenges our company and nation face? We provide the resources, inspiration and focus - if you have the passion and courage to dream big, work hard, and have fun doing what you love then we want to build a better tomorrow with you. Never have the opportunities for a technical career been so limitless. Lockheed Martin Aeronautics is searching for an experienced Enterprise Information Systems Security Manager (ISSM) to join an exciting opportunity within the Classified Cyber Security team. The selected candidate will provide Cyber Security technical leadership as the Enterprise ISSM and manage internal and external customers’ expectations on security architecture, and Assessment & Authorization...
General Dynamics Mission Systems, Inc
Mar 09, 2026
Enterprise Operations Linux Systems Administrator
General Dynamics Mission Systems, Inc San Antonio, TX, USA
Basic Qualifications Bachelor’s degree in a specialized area; or equivalent is required plus a minimum of 5 years of relevant experience; or Master's degree plus a minimum of 3 years of relevant experience. CLEARANCE REQUIREMENTS: Department of Defense TS/SCI security clearance is required at time of hire. Candidates must be able to obtain a Polygraph within reasonable amount of time.  Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Put your engineering talent to the ultimate test. At General Dynamics Mission Systems, we create the technologies, products and services that help our service members, intelligence analysts and first responders keep our nation safe. The work we do is so advanced...
Lockheed Martin
Mar 04, 2026
Systems Engineer Stf
Lockheed Martin Jacksonville, AR, USA
Description: b>WHO WE ARE Lockheed Martin is a global leader in aerospace, defense, and technology solutions, dedicated to pushing the boundaries of innovation and shaping the future of the industry. With a rich legacy of excellence and a commitment to delivering advanced capabilities to our customers, we are proud to be at the forefront of cutting-edge technology and engineering. THE WORK The Training Device Systems Engineer (SE) is a multi-discipline role and reports directly to the C-130J MATS TSSC Engineering Manager. Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for fielded Aircrew and Maintenance Training Devices. Ensures the logical and systematic conversion of customer or product requirements into total systems solutions that acknowledge technical, schedule, and cost constraints. Performs functional analysis, timeline analysis, detail trade studies, requirements allocation...
Lockheed Martin
Feb 25, 2026
Security Systems Specialist & Technical Operations
Lockheed Martin King of Prussia, PA, USA
Description: Current Secret with ability to obtain TS/SCI access. The Security Systems Specialist & Technical Operations performs a variety of activities on security systems. The activities ensure compliance with applicable LM policies and US Government secure facility design requirements in CFR 117, ICD 705, and applicable UFC guides and system. Responsibilities include: - Performs a variety of activities on information systems utilized in the Security organization including data extraction and report generation. - Requires proficiency in physical security systems applications for video surveillance, security alarms, access control systems. - Provides definitive security system requirements for proprietary areas, and system level requirements for classified program areas in conjunction with the Physical Security and Accreditation Branch for their application. - Recommends and assists in the development and enforcement of LM Space enterprise standards for these...
Lockheed Martin
Mar 28, 2026
Information Systems Security Officer, Classified Cybersecurity
Lockheed Martin Cape Canaveral, FL, USA
Description: This position will perform duties as a Classified Cybersecurity Information Systems Security Officer (ISSO) for the LM Space facility in Cape Canaveral, FL. Classified Cybersecurity Analysts help secure lifesaving products and critical state-of-the-art engineering and manufacturing systems by applying cutting edge cybersecurity principles. Rising to the challenge of building a more secure world for the warfighter, space exploration, climate sustainability and commercial use. The work that Cybersecurity Analysts do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline. - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: - Oversee day-to-day information system security...
Lockheed Martin
Mar 27, 2026
Classified Cybersecurity
Lockheed Martin Fort Worth, TX, USA
Description: Lockheed Martin is also embarking on a transformational journey – destination the future. Digital Transformation (DT) is Lockheed Martin’s path to the future with its interconnected environment where data becomes information and information drives decisions that create value across the entire lifecycle. This includes how our workforce will operate, as well. To help us along this journey we are is seeking a qualified candidate for the position of Workforce Programs Lead. We’re looking for someone with passion and enthusiasm in leading us on programs to build and enable the future workforce. This position can be summarized in this way. At Lockheed Martin Aeronautics, we're taking innovation to the next level. From designing the most advanced air vehicle to designing aircraft that defies gravity, our engineers live on the cutting edge of technology. But we are not just invested in aircraft; we are also invested in people. We know that our success is a combined...
Lockheed Martin
Mar 24, 2026
Information Systems Security Manager / Classified Cyber Security Mgr
Lockheed Martin Orlando, FL, USA
Description: Unleash your cybersecurity prowess to shield the heartbeat of technological evolution. Your role goes beyond securing products; it's about empowering the builders of tomorrow, whether they're on the frontlines, exploring the cosmos, or shaping industries. Lockheed Martin Enterprise Operations is seeking a Classified Cyber Security Manager and Information System Security Manager to join our team’s efforts in supporting and defending classified networks hosted at the corporate level. The Enterprise Operations team of cyber security professionals are Subject Matter Experts (SME) supporting Department of Defense (DoD) programs to ensure classified information systems meet cyber security requirements and government directives by auditing, detecting, analyzing and mitigating cyber threats across multiple Enterprise networks. The work that our team does can be summarized in this way: • You will have a direct impact to national security, ultimately contributing to...
Lockheed Martin
Mar 24, 2026
Security Rep Asc
Lockheed Martin Orlando, FL, USA
Description: Lockheed Martin’s Security Operations Center (LMSOC) is seeking a Security Rep Asc to support our consolidated personnel security clearance program. The incumbent will provide advanced security services for domestic and international operations, supporting both internal security professionals and external government agencies. This role requires knowledge of personnel security processes, and a strong ability to navigate complex environment. The selected candidate must exercise independent judgment and decision making and be able to work with minimal supervisory oversight. Day to day tasks may include: - Defense Information System for Security (DISS) administration - Security Information Management System (SIMS) administration - Security Central system administration - Analyzing clearance data to determine appropriate actions - Providing support for special program driven actions - Researching and resolving escalated clearance tickets - Providing efficient customer...
Lockheed Martin
Mar 20, 2026
Classified Cyber Security Sr
Lockheed Martin Orlando, FL, USA
Description: WHAT WE’RE DOING Lockheed Martin Rotary and Mission Systems, we are driven by innovation and integrity. We believe that by applying the highest standards of business ethics and visionary thinking, everything is within our reach and yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education. As a cyber security professional at Lockheed Martin, you’ll safeguard the sensitive information and warfighting capabilities that our citizens and the world depend upon to protect U.S. and ally interests. Here, you’ll work alongside other cyber security experts and military members to support their military operational objectives by providing them with a safe and secure operating environment. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep these exquisite capabilities protected. We are looking for an individual to serve as a Information System...
Lockheed Martin
Mar 20, 2026
Security Assistant Senior Specialist
Lockheed Martin Orlando, FL, USA
Description: Lockheed Martin’s Security Operations Center (LMSOC) is seeking a seasoned Security Assistant Senior Specialist to support our consolidated personnel security clearance and pre employment screening programs. The incumbent will provide advanced security services for domestic and international operations, supporting both internal security professionals and external government agencies. This role requires knowledge of personnel security processes, and a strong ability to navigate complex environment. The selected candidate must exercise independent judgment and decision making and be able to work with minimal supervisory oversight. Day-to-day tasks may include: - Defense Information System for Security (DISS) administration - Security Information Management System (SIMS) administration - Security Central system administration - Applicant tracking system administration - Analyzing clearance and pre-employment data to determine appropriate actions - Researching and...
Lockheed Martin
Mar 17, 2026
Information System Security Officer, Classified Cybersecurity
Lockheed Martin Cape Canaveral, FL, USA
Description: Lockheed Martin Space (LMS) is seeking a Classified Cybersecurity Information Systems Security Officer (ISSO) supporting the Fleet Ballistic Missile (FBM) program. This position is located in Cape Canaveral, FL. The selected candidate will conduct daily cybersecurity operations, to include auditing, creating information system authorization packages, and implementing cybersecurity requirements for both classified and unclassified information systems. The position requires a current Secret clearance and the ability to obtain a Top Secret security clearance. Candidates should possess 1 to 3 years of related experience and may have a post secondary degree. Key Responsibilities of this role include: • Carry out technical administration of an Information System in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). • Upkeep, monitor, analyze, and respond to network and security events. • Document compliance...
Lockheed Martin
Mar 17, 2026
Security Assistant Specialist, Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: Lockheed Martin’s Security Operations Center (LMSOC) is seeking a Security Assistant Specialist to support our consolidated personnel security clearance program. The incumbent will provide advanced security services for domestic and international operations, supporting both internal security professionals and external government agencies. This role requires knowledge of personnel security processes, and a strong ability to navigate complex environment. The selected candidate must exercise independent judgment and decision making and be able to work with minimal supervisory oversight. Day to day tasks may include: - Defense Information System for Security (DISS) administration - Security Information Management System (SIMS) administration - Security Central system administration - Analyzing clearance data to determine appropriate actions - Researching and resolving escalated clearance tickets - Providing efficient customer service to applicants, employees, security...
LMI
Mar 16, 2026
Senior Business Analyst
LMI Alexandria, VA, USA
Overview LMI is seeking an experienced Senior Business Analyst at the Department of Homeland Security (DHS), Federal Protective Service (FPS) headquarters in Alexandria, VA.  This position will support the FPS Office of Professional Responsibility with a myriad of analytical and business process matters impacting criminal and administrative investigations.  In addition, the incumbent will provide critical operational support and integration of new or improved programs and processes across the organization. You must be able to work on client site full-time in Alexandria, VA (ad hoc telework flexibility may be available).     LMI is a new breed of digital solutions provider dedicated to accelerating government impact with innovation and speed.  Investing in technology and prototypes ahead of need, LMI brings commercial-grade platforms and mission-ready AI to federal agencies at commercial speed.   Leveraging our mission-ready technology and...
General Dynamics Mission Systems, Inc
Mar 13, 2026
Advanced Security Specialist / CPSO
General Dynamics Mission Systems, Inc Bloomington, MN, USA
Basic Qualifications Bachelor’s degree in Administration of Justice, Criminal Justice, Law Enforcement or related field or the equivalent is required plus a minimum of 5 years relevant experience; or Master's degree plus a minimum of 3 years relevant experience. General Dynamics experience is strongly preferred. CLEARANCE REQUIREMENTS: Ability to obtain a Department of Defense TS/SCI security clearance is required at time of hire.  Applicants selected will be subject to a U.S. Government security investigation and must meet eligibility requirements for access to classified information. Due to the nature of work performed within our facilities, U.S. citizenship is required. Responsibilities for this Position Help make the technologies, products and services that make a difference. That’s the opportunity that’s waiting for you at General Dynamics Mission Systems. We help our nation’s heroes keep our nation safe by creating...
Lockheed Martin
Mar 09, 2026
Security Generalist Sr./ Luke AFB, AZ - Level 3
Lockheed Martin AZ, USA
Description: What We’re Doing: Lockheed Martin’s, Rotary & Mission Systems (LM RMS), Program Security and Compliance invites you to step up to one of today’s most daunting challenges: the protection of exquisite government capabilities leading to warfighter supremacy against our peer and near peer adversaries. As a program security professional at Lockheed Martin, you’ll safeguard the sensitive information and warfighting capabilities that our citizens and the world depend upon to protect U.S. and ally interests. Here, you’ll work alongside other program security experts and military members to support their military operational objectives by providing them with a safe and secure operating environment. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep these exquisite capabilities protected. The Work: This position is located at Luke AFB, AZ and will support F-35 security...
Lockheed Martin
Mar 09, 2026
Classified Cyber Security Sr / ISSO / Orlando
Lockheed Martin Orlando, FL, USA
Description: You will be the Information Systems Security Officer Sr for the team. Our team is responsible for ensuring the security and integrity of our information systems. What You Will Be Doing As the Information Systems Security Officer Sr, you will be responsible for overseeing day-to-day information system security operations, including auditing and ensuring compliance with internal LM and customer security requirements. You will also be responsible for technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). Your responsibilities will include: Overseeing day-to-day information system security operations Carrying out technical administration of IS in accordance with internal LM and customer security requirements Upkeeping, monitoring, analyzing, and responding to network and security events Documenting compliance actions with the ISSM to address non-compliance in...
Lockheed Martin
Mar 09, 2026
Classified Cyber Security Sr
Lockheed Martin Huntsville, AL, USA
Description: What We’re Doing: Lockheed Martin Rotary and Mission Systems, we are driven by innovation and integrity. We believe that by applying the highest standards of business ethics and visionary thinking, everything is within our reach and yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education. As a cyber security professional at Lockheed Martin, you’ll safeguard the sensitive information and warfighting capabilities that our citizens and the world depend upon to protect U.S. and ally interests. Here, you’ll work alongside other cyber security experts and military members to support their military operational objectives by providing them with a safe and secure operating environment. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep these exquisite capabilities protected. We are looking for an individual to serve as a Information System...
Lockheed Martin
Mar 05, 2026
Information System Security Officer, Classified Cybersecurity
Lockheed Martin Colorado Springs, CO, USA
Description: Current Secret clearance required with ability to obtain Top Secret clearance. This role will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) in Colorado Springs, CO. ISSOs help secure lifesaving products and critical state-of-the-art engineering and manufacturing systems by applying cutting edge cybersecurity principles. Rising to the challenge of building a more secure world for the warfighter, space exploration, climate sustainability and commercial use. The work that ISSOs do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline - You can enjoy a work-life balance that allows for flex hours and a family-first culture Key Responsibilities of this role...
Lockheed Martin
Mar 05, 2026
Information System Security Officer (ISSO)
Lockheed Martin Boulder, CO, USA
Description: This position requires a Final Secret clearance with ability to obtain and maintain Top Secret clearance. The Cybersecurity Analyst will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) in Boulder, Colorado. Classified Cybersecurity Analysts help secure lifesaving products and critical state-of-the-art engineering and manufacturing systems by applying cutting edge cybersecurity principles. Rising to the challenge of building a more secure world for the warfighter, space exploration, climate sustainability, and commercial use. The work that Cybersecurity Analysts do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline - You can enjoy a work-life balance that allows for flex...
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