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532 security clearance jobs found in Littleton, CO

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LMI
Feb 06, 2026
ISSO - Information System Security Officer - Clearance Required
LMI Colorado Springs, CO, USA
Overview LMI is seeking a highly motivated mid-level Information System Security Officer (ISSO) looking for hands-on experience and opportunity for career growth under direction of the Chief Information Security Officer.   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 solutions, proven expertise in federal deployment, and strategic relationships, we enhance outcomes for the government, efficiently and effectively. With a focus on agility and collaboration, LMI serves the defense, space, healthcare, and energy sectors—helping agencies navigate complexity and outpace change. Headquartered in Tysons, Virginia, LMI is committed to delivering impactful results that strengthen missions and...
Lockheed Martin
Mar 07, 2026
Human Factors Engineer
Lockheed Martin Littleton, CO, USA
Description: "Ahead of Ready" As we enter a new era of Weapon Systems, Lockheed Martin is a pioneer, partner, innovator and builder. Our outstanding men and women are on a mission to make a difference in the world and every single day we use our unique skills and experiences to create, craft and build solutions to some of the worlds’ hardest engineering problems. Do you want to be part of a culture that inspires employees to think big, perform with excellence and build incredible products? We provide the resources, inspiration and focus - if you have the passion and courage to dream big, then we want to build a better tomorrow with you. Join us in shaping a new era in space and find a career that's built for you. As a Human Factors Engineer, you will support the Systems Engineering Special Disciplines organization which services multiple programs. In this role you will: • Apply human factors principles, methodologies, and technologies to the design of human-machine systems...
Lockheed Martin
Mar 07, 2026
Asset Protection Supervisor
Lockheed Martin Littleton, CO, USA
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...
Lockheed Martin
Mar 07, 2026
Lead Avionics Responsible Engineer V, Flight Controls
Lockheed Martin Littleton, CO, USA
Description: Join Our Team as an Lead Avionics Responsible Engineer where you will work on the development of a sophisticated state-of-the-art avionics product in a world class Integrated Product Development environment. Location: This position does not support teleworking ;the selected candidate will be located near our Lockheed Martin Space facility in: Littleton CO and be expected to work a flexible 9x80 schedule in the office full-time. 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...
Lockheed Martin
Mar 07, 2026
Software Engineer Staff - Space Protection Programs
Lockheed Martin Littleton, CO, USA
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. Space Protection Programs is seeking an experienced Software Engineer who can guide a...
Lockheed Martin
Mar 07, 2026
Electronics Engineer III
Lockheed Martin Littleton, CO, USA
Description: Join Our Team as an Electronics Engineer where you will work on the development of a sophisticated state-of-the-art avionics product in a world class Integrated Product Development environment. Location: This position does not support teleworking ; you will be located near our Lockheed Martin Space facility in: Littleton CO and be expected to work a flexible 9x80 schedule in the office full-time. 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....
Lockheed Martin
Mar 06, 2026
Electrical/Electronics Engineer
Lockheed Martin Littleton, CO, USA
Description: Lockheed Martin “Ahead of Ready” 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. Learn more about our Hypersonic Solutions and the...
Lockheed Martin
Mar 06, 2026
System Engineer-IT Sr
Lockheed Martin Littleton, CO, USA
Description: Signal Reconnaissance (SR) Program This is your opportunity to be challenged to make a difference in the world and every single day we use our skills and experiences to create, design and build solutions to some of the worlds’ hardest infrastructure engineering problems for the RMS SR program. System Administration The team handles routine backups, security patch application, and compliance maintenance across Linux and Windows physical and virtual systems. They manage baseline configuration, provide Active Directory and LDAP user account support, troubleshoot technical issues, and administer certificate services. Virtualization Virtual infrastructure is overseen with VMware ESXi/vCenter and Hyper V. Responsibilities include provisioning, maintaining, and de commissioning virtual machines to meet evolving workload demands. Network Administration Under senior engineer guidance, the team assists with configuring and monitoring Ethernet switches, routers,...
Lockheed Martin
Mar 06, 2026
Composites Manufacturing Engineer Sr
Lockheed Martin Littleton, CO, USA
Description: Lockheed Martin is seeking a Composites Manufacturing Engineer for a position at the Mechanical Manufacturing Center (MMC), located on the Waterton Campus in Littleton, Colorado. The MMC Manufacturing Engineering team supports a variety of production areas, including additive manufacturing, traditional machining, mechanism assembly, composite fabrication, and structural assembly. The chosen candidate would join our collaborative team, supporting the composites fabrication area and products such as flat, curved, or cylindrical composite laminates and sandwich panels. Scope of responsibilities will include: • Providing shop floor support, maintaining manufacturing plans, tooling requirements, engineering change implementation and coordinating changes in the build process for a specific program or production area. • Accomplish results by utilizing multi-functional team, including Technicians, Quality Assurance, Manufacturing and Test Engineering, MRP/Parts Production...
Lockheed Martin
Mar 06, 2026
Production Planner Spec
Lockheed Martin Littleton, CO, USA
Description: By bringing together people that use their passion for purposeful innovation, at Lockheed Martin we keep people safe and solve the world's most complex challenges. Our people are some of the greatest minds in the industry and truly make Lockheed Martin a great place to work. With our employees as our priority, we provide career opportunities designed to propel development and boost agility. Our flexible schedules, competitive pay, and comprehensive benefits enable our employees to live a healthy, fulfilling life at and outside of work. At Lockheed Martin, we place an emphasis on empowering our employees by fostering innovation, integrity, and exemplifying the epitome of corporate responsibility. Your Mission is Ours. Our facility in Littleton, CO is seeking a Production Planner Spec to support manufacturing operations for our Mechanical Manufacturing Center (MMC). MMC supports all Lockheed Martin Space programs building composite spacecraft structures, mechanisms,...
Lockheed Martin
Mar 06, 2026
Software Engineering Manager
Lockheed Martin Littleton, CO, USA
Description: 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. LM SPACE: WHAT WE'RE DOING 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. THE WORK Lockheed Martin is seeking a talented Software Engineering Manager with a Final Top Secret security clearance to work...
Lockheed Martin
Mar 06, 2026
Mechanical Engineer
Lockheed Martin Littleton, CO, USA
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. Your duties will include responsibility for the design, manufacture, procurement and...
Lockheed Martin
Mar 06, 2026
Pipefitter/Plumber
Lockheed Martin Littleton, CO, USA
Description: Performs regular building/site proactive and reactive maintenance of plumbing infrastructure including - piping, fixtures, valves, etc. Responsible for reading & interpreting construction blueprints, isometric drawings, and sketches. Performs work tasks to plumbing & fire codes and industry standard trade practices while determining and laying-out pipe runs, equipment, and accessories from blueprints. Installs drain & vent lines, domestic water piping, chilled & hot water supply & return lines, steam/condensate piping, compressed air, hydraulic & fuel oil piping, exotic gas lines, fire protection piping, waste treatment piping systems, and pipe support hangers & brackets. Utilizes piping math to determine correct pipe run offsets; installs and maintains valves, meters, gauges, and any manner of piping system; and installs and water-seal tests sanitary plumbing fixtures such as wall mounted toilets, urinals, & lavatory sinks,...
Lockheed Martin
Mar 06, 2026
Pipefitter/Plumber
Lockheed Martin Littleton, CO, USA
Description: Performs regular building/site proactive and reactive maintenance of plumbing infrastructure including - piping, fixtures, valves, etc. Responsible for reading & interpreting construction blueprints, isometric drawings, and sketches. Performs work tasks to plumbing & fire codes and industry standard trade practices while determining and laying-out pipe runs, equipment, and accessories from blueprints. Installs drain & vent lines, domestic water piping, chilled & hot water supply & return lines, steam/condensate piping, compressed air, hydraulic & fuel oil piping, exotic gas lines, fire protection piping, waste treatment piping systems, and pipe support hangers & brackets. Utilizes piping math to determine correct pipe run offsets; installs and maintains valves, meters, gauges, and any manner of piping system; and installs and water-seal tests sanitary plumbing fixtures such as wall mounted toilets, urinals, & lavatory sinks,...
Lockheed Martin
Mar 05, 2026
Alternate ISSM/Classified Cybersecurity Associate Manager
Lockheed Martin Littleton, CO, USA
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...
Lockheed Martin
Mar 05, 2026
Environment, Health and Safety Engineer
Lockheed Martin Littleton, CO, USA
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. You will be the Environmental Health & Safety Engineer for Lockheed Martin Space in...
Lockheed Martin
Mar 05, 2026
Mechanical Engineer
Lockheed Martin Littleton, CO, USA
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 finding a career that's built for you. In this role, you will work as an engineer focused on satellite Thermal Blanket Design,...
Lockheed Martin
Mar 05, 2026
Personnel Security Representative
Lockheed Martin Littleton, CO, USA
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...
Lockheed Martin
Mar 05, 2026
RF Engineer / Mission Analysis IV
Lockheed Martin Littleton, CO, USA
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...
Lockheed Martin
Mar 05, 2026
Software Engineer
Lockheed Martin Littleton, CO, USA
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. The Erebus Program is a newly awarded 7-year effort that delivers cutting-edge...
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