70 security clearance jobs found in Littleton, CO

Description: The Facilities Protection Supervisor will provide multi-disciplined leadership in support of the Facilities & Asset Protection (F&AP) organization in Littleton, CO. Responsibilities include: - Manage deployed resources in the following disciplines: Visitor & Access Control, Technical Security System oversight, regional Crisis Management, Executive Protection, and Workplace Violence Prevention support, Fire Compliance, Lock & Key services, Emergency Medical Response (EMS), and day-to-day operations oversight of proprietary and contract security personnel. - Collaborate with local and enterprise leadership on policy, procedure, and matters of daily operational needs and best practices. - Interface with various levels of internal and external customers and liaison with local Law Enforcement, Fire, and EMS personnel. - Provide individual and group briefings and training on a variety of security matters. - Work closely with enterprise F&AP leaders...

Description: TS/SCI clearance with ability to obtain a Polygraph. The Classified Cybersecurity Associate Manager will partner with the security team, Program personnel, and Government customers to perform as an Alternate Information Systems Security Manager (A-ISSM) for Information Systems (IS) located at the LM facility in Littleton, CO. In this role, you will: - Manage a team of ISSOs and ensure compliance with contract security specifications, customer governing requirements and LM Space security policies. - Assist the ISSM in overseeing day-to-day information system security operations. - Carry out LM and customer security requirements under the Risk Management Framework (RMF). - Perform system auditing to validate configuration and processes are in accordance with the Assessment and Authorization (A&A) documentation, and assist in periodic regulatory risk assessments. Other responsibilities include ensuring consistent implementation of compliant and cost effective...

Description: Top Secret/SCI clearance required with ability to pass a Polygraph. Lockheed Martin is seeking an experienced Personnel Security Representative Sr. to join our Personnel Security team within our Space organization. You will be responsible for submission of SAP nominations, adverse and foreign travel reporting, focusing on delivering exceptional service to our SAP customers and Lockheed Martin Program management. You will also be instrumental in identifying areas for process improvement and automation, leveraging your technical expertise to implement innovative solutions and enhance the overall efficiency of our personnel security operations. Additional responsibilities include: • Process and submit Foreign Travel and Pre-Screening Questionnaire (PSQ) templates to customers to aid in the support of timely reporting mandates set by the customer(s). • Become a SME (Subject Matter Expert) on Adverse Reporting for various customers. Aid Lockheed Martin employees in...

Description: Protecting what matters most is the mission that matters most. Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. The Lockheed Martin Space Mission Integration team seeks an RF engineer to provide project and technical leadership on a dynamic team of Strategic Operations Research Analysts in Littleton, CO. This team provides physics-based technical analysis to identify and validate the viability of future satellite constellations while also assisting in the design of next generation system-of-system architectures in support of national security, commercial, and civil mission areas. In this role you will apply RF and payload expertise to develop and analyze RF system architectures to support proposals, studies, trades, and programs to...

Description: The mission matters. So do the people behind it. With advancing defense technology at our core, what sets us apart is a culture of collaboration, purpose, and impact. What is the mission? Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more— we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us,...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more— we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. Military Space Operations in Littleton, CO has an exciting opportunity for a Program Quality...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more— we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. • Independent evaluation of software processes and products and their conformity to...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...

Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space OVERVIEW: Fleet Ballistic Missiles (FBM) is one of Lockheed Martin’s outstanding Lines of Businesses that prioritizes partnership, integrity, and reliability. The Life Extension 2 team is an organization within the greater FBM program which supports the development of the Next Generation System by developing concepts, researching, and maturing technologies to support the development of the next FBM Missile System. The FBM Program is experiencing significant growth and we need your expertise to deliver amazing new technologies to our customers while maintaining the technical requirements of the strategic deterrence. Learn about the Trident II D5 Fleet Ballistic Missile. As a Systems Engineer for Model-Based System Engineering (MBSE) you will lead and employ MBSE approaches to developing Systems Engineering products using SysML and MBSE tools to capture, maintain, and visualize...

Description: Clearance Requirement: Active TS/SCI with willingness to complete a Polygraph The Security Representative supports the Global Security–Program Security organization in executing high-priority national security missions. Key Responsibilities • Regulatory Compliance – Implement and maintain security procedures and other applicable regulations. • Customer Visits – Coordinate external visitors, ensuring proper access control, briefings, and compliance with security protocols. • Badge Issuance – Create, issue, and deactivate identification badges and access cards in accordance with security policy. • Team Collaboration – Work closely with other Program Security reps, program managers, and engineering leads to integrate security requirements into program execution. • Incident Response – Assist in the investigation of security incidents, breaches, or potential violations; recommend corrective actions. • Training & Awareness – Deliver or coordinate security awareness...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...

Description: We are hosting A Lockheed Martin Space In-Person hiring event in April of 2026. This event will be by invitation only and will take place near or in Littleton, CO. Please apply to be considered. We are hiring levels 2-5. If you are interested in joining LM and working for the FBM program please apply to this requisition. This hiring event is for experienced professionals with a active security clearance or are willing and able to get a security clearance. This event is for external applicants only. By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings. As an MBSE you will: • Support MBSE efforts on multiple programs; solicit stakeholder needs for MBSE implementation • Develop architecture and interface documentation from model data •...

Description: We are hosting A Lockheed Martin Space In-Person hiring event in April of 2026. This event will be by invitation only and will take place near or in Littleton, CO. Please apply to be considered. We are hiring levels 2-5. If you are interested in joining Lockheed Martin, please apply to this requisition. This hiring event is for experienced professionals with a active security clearance or are willing and able to get a security clearance. This event is for external applicants only. By applying to this job, you are expressing interest in this position and could be considered for other career opportunities where similar skills and requirements have been identified as a match. Should this match be identified you may be contacted for this and future openings. Join Our Team as an ASIC & FPGA Design Engineer where you will support over 50 different programs and research and development (R&D) efforts, affecting technology across military space, civil...

Description: This position requires a TS/SCI clearance with ability to pass polygraph. The Classified Cybersecurity Staff will partner with the security team, program, and Government customers to perform as an Information Systems Security Officer (ISSO) for Information Systems (IS) located at the LM Waterton facility in Littleton, CO. Responsibilities include: • Oversee day-to-day information system security operations including assisting the ISSM on all technical security matters. • Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). • Participating in auditing and continuous monitoring of the IS. • Review and oversee RMF Package authorizations. • Upkeep, monitor, analyze, and respond to security events. • Document compliance actions within the approved automated compliance tracking system or develop a plan of actions and milestones (POA&M). • Ensure systems are...

Description: This position requires TS/SCI clearance. The Business Development Security Representative will spearhead new business pursuits for Lockheed Martin’s Space Special Access Programs (SAP). Partnering with enterprise strategy teams, this role aligns capture priorities across the corporation, blends visionary thinking with strong business development expertise, and orchestrates complex multi customer engagements while ensuring rigorous security compliance. Responsibilities include: - Lead SAP new business capture efforts; identify and qualify opportunities with U.S. Government customers. - Serves as a Contractor Special Security Officer (CSSO). - Works closely with U. S. Government customers to seek contract execution approvals and seeks security rulings or deviations. - Collaborate with corporate strategy groups to synchronize pursuit priorities and market positioning. - Draft and present business proposals, security rulings, and deviation requests to customers and...

Description: This position requires TS/SCI clearance with ability to pass a Polygraph. The Cybersecurity Specialist will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) at the LM Waterton facility in Littleton, CO. 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...

Description: TS/SCI clearance with willingness to receive Polygraph. The Cybersecurity Specialist will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) for Special Access Programs located at the LM Waterton facility in Littleton, CO. Classified Cybersecurity Analysts help secure 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. It's dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline. Key Responsibilities of this role includes: - Oversee day-to-day information...

Description: This position requires TS/SCI clearance with ability to receive Polygraph. The Cybersecurity Specialist will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) for Sensitive Programs located at the LM Waterton facility in Littleton, CO. In this role you will: - Oversee day-to-day information system security operations including auditing the IS, hardware, and software implementations and RMF package authorizations. - Carry out technical administration of IS 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 actions with the ISSM to address non-compliance in the allotted time frame. - Ensure systems are operated, maintained, and disposed of in accordance with internal security policies and practices. - Participate in internal/external...

Description: Space is a critical domain, connecting our technologies, our security and our humanity. While others view space as a destination, we see it as a realm of possibilities, where we can do more — we can innovate, invest, inspire and integrate our capabilities to transform the future. At Lockheed Martin Space, we aim to harness the full potential of space to cultivate innovation, reduce costs, and push the boundaries of what technology can achieve. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. We’re erasing boundaries and forming partnerships across industries and around the world. We’re advancing spacecraft and the workforce to fuel the next generation. And we’re reimagining how space can connect us, ensuring security and prosperity. Join us in shaping a new era in space and find a career that's built for you. For over 70 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...

Description: TS/SCI clearance required with ability to receive Poly within 6 months. The Cybersecurity Specialist will partner with the security team, program, and government customers to perform as an Information Systems Security Officer (ISSO) for Special Programs located at the LM Waterton facility in Littleton, CO. In this role you will: - Oversee day-to-day information system security operations including hardware and software implementations. - Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). - Auditing of the IS. - Upkeep, monitor, analyze, and respond to network and security events. - Document compliance actions within the approved automated compliance tracking system or develop a plan of actions and milestones (POA&M) with the Information Systems Security Manager (ISSM) to address non-compliance in the allotted time frame. - Ensure systems are operated,...