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74 security clearance jobs found in Littleton

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Lockheed Martin
Feb 12, 2026
Project Engineering Manager - Clearance Required
Lockheed Martin Littleton, CO, USA
Description: WHAT WE'RE DOING In C4ISR, we harness advanced technologies to deliver and maintain mission-relevant capabilities for our customers. We utilize a range of innovative tools and methodologies and support a 'Family of Programs'. THE WORK In this important role you will: • Manage a team of Project Engineers and CAMs • Coordinating direct employee recruitment & selection • Assisting in employee mentorship and training, performance discussions and recognition • Cultivating and growing the Project Engineering organization • Interfacing w/ Program Management, CAMs, Functional Leads, other discipline leaders, and customers over priorities, milestones and deliveries Along with management duties, the candidate will have a technical role on the program as a Project Engineer utilizing their experience to lead a multi-disciplinary engineering team through development activities related to ground systems. The preferred candidate should have prior experience with cost,...
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
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
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
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 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
Electronics Engineer
Lockheed Martin Littleton, CO, USA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space. At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator, and builder. Our amazing people are on a mission to make a difference in the world and every day we use our unique skills and experiences to create, design and build solutions to some of the world’s hardest engineering problems. Our culture encourages employees to dream big, perform with excellence and create incredible products. We provide the resources, inspiration and focus and if you have the passion and courage to dream big, we want to build a better tomorrow with you. Do you have a commitment to success, proven interpersonal skills, a positive outlook? Are you a creative thinker and problem solver? Are you looking for a meaningful career to lead and contribute - with growth opportunities? If so, then we would love to speak with you! The Testbed & Simulation Product Line is a fast paced, highly...
Lockheed Martin
Mar 05, 2026
RF Engineer Senior (Level III)
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. Lockheed Martin Space is seeking an experienced RF Engineer to join our team in Littleton, CO ! As an RF Engineer, you will architect, design, and develop RF...
Lockheed Martin
Mar 04, 2026
Systems Engineer, Sr.
Lockheed Martin Littleton, CO, USA
Description: The coolest jobs on this planet… or any other… are with Lockheed Martin Space! At the dawn of a new space age, Lockheed Martin is a pioneer, partner, innovator and builder. Our amazing men and women are on a mission to make a difference in the world and every day we use our unique skills and experiences to create, design and build solutions to some of the worlds’ hardest engineering problems. Our culture encourages employees to dream big, perform with excellence and create incredible products. We provide the resources, inspiration and focus and if you have the passion and courage to dream big, we want to build a better tomorrow with you. Lockheed Martin Space has an immediate opportunity for a mid-career System Safety Engineer at our Denver, CO. facility. If you have an interest in working for a company that develops national defense systems, come and be a part of our System Safety Team. At Lockheed Martin Space, we are driven by innovation and integrity. We...
Lockheed Martin
Feb 27, 2026
Regulatory Document Analyst
Lockheed Martin Littleton, CO, USA
Description: WHAT WE'RE DOING At Lockheed Martin, in TMAN, 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 in yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education. We are a dynamic team on a recurring multi-year, critical program seeking a Regulatory Document Analyst Associate who likes to be challenged and solve problems. THE WORK • Ensuring Contractual requirements are met through completion of CDRL deliveries. • Implement and maintain documentation tracking records. • Maintaining/updating the Configuration Data Management Plan and the associated Standard Operating Procedures (SOPs). • Gathering and analyzing Data Management metrics. • Supporting program meetings. • Interfacing w/Program Management, CAMs, Project Engineers, other discipline leaders. WHO WE ARE Join the Trusted Manager (TMAN) program...
Lockheed Martin
Feb 27, 2026
Systems Engineer - Early Career
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 diverse 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. Lockheed Martin Space in Littleton, CO is seeking a full-time Early Career Computer Science -Systems Integration and Test Engineer. The Erebus Program is a newly awarded 7-year effort that delivers cutting-edge intelligence and geospatial...
Lockheed Martin
Feb 27, 2026
Chief Engineer, NC3 Enterprise Systems
Lockheed Martin Littleton, CO, USA
Description: 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. Come join Lockheed Martin's Global Situational Awareness (GSA) & Global Command, Control & Comms (GC3) team. This group of diverse Engineers design, develop, and field the systems architecture and supporting hardware and software components and systems in support of the next generation of GC3 systems. As part of the GC3 portfolio in the Strategic Missiles and...
Lockheed Martin
Feb 27, 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. Come work with multidisciplinary engineers focused on delivering world class...
Lockheed Martin
Feb 27, 2026
Non-destructive Testing 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. Uses technical expertise in the field of non-destructive testing (NDT) with industry...
Lockheed Martin
Feb 27, 2026
Regulatory Document Analyst Asc
Lockheed Martin Littleton, CO, USA
Description: WHAT WE'RE DOING At Lockheed Martin, in TMAN, 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 in yours as a Lockheed Martin employee. Lockheed Martin values your skills, training, and education. We are a dynamic team on a recurring multi-year, critical program seeking a Regulatory Document Analyst Associate who likes to be challenged and solve problems. THE WORK • Ensuring Contractual requirements are met through completion of CDRL deliveries. • Implement and maintain documentation tracking records. • Maintaining/updating the Configuration Data Management Plan and the associated Standard Operating Procedures (SOPs). • Gathering and analyzing Data Management metrics. • Supporting program meetings. • Interfacing w/Program Management, CAMs, Project Engineers, other discipline leaders. WHO WE ARE Join the Trusted Manager (TMAN) program...
Lockheed Martin
Feb 26, 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. Looking for a hardworking Mechanical Engineer to become a member of the CPS Team. As a...
Lockheed Martin
Feb 26, 2026
Electronics Engineer IV, Responsible Product Engineer
Lockheed Martin Littleton, CO, USA
Description: Please join us as an Electronics Engineer , where you will join Global Security Programs, one of the most innovative and fastest moving organizations in Space. Come help build end-to-end Security Systems and utilize our cutting-edge capabilities to assure the security and health of our nation’s space assets. We push the boundary of what gets done in space. Come be one of the people playing a critical role to defeat the enemies of freedom. 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. What does this role look like? Lockheed Martin is seeking a Senior Electronics Engineer to join the SPP portfolio on a critical payload development team. In this role you will be a key stakeholder in CCA hardware design, test, integration, and documentation through the entire development life cycle. Key activities...
Lockheed Martin
Feb 25, 2026
Flight Sciences Hypersonic Thermal Engineer
Lockheed Martin Littleton, CO, USA
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. The actual date and location will be disclosed at a later date. Please apply to be considered. We are hiring levels 2-5. If you are interested in joining Lockheed Martin as a Systems Integration engineer, please apply to this requisition. This hiring event is for experienced professionals with a active 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. Basic Qualifications: • Professional work experience in some/all of the following: Thermophysics & Heat transfer, Fluid Mechanics, Aerodynamics,...
Lockheed Martin
Feb 25, 2026
Loads and Dynamics Engineer
Lockheed Martin Littleton, CO, USA
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. The actual date and location will be disclosed at a later date. Please apply to be considered. We are hiring levels 2-5. If you are interested in joining Lockheed Martin as a Systems Integration engineer, please apply to this requisition. This hiring event is for experienced professionals with an active 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. - Perform structural dynamic analyses for spacecraft flight hardware - Produce and maintain models generated from both in-house and commercially...
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