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103 senior security engineer jobs found

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Lockheed Martin
Mar 18, 2026
Software Engineer Sr Staff, Architect
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. Lockheed Martin is leading the way in hypersonic missile development and we want you to be a part of it! We are creating the first hypersonic boost/glide system for the US Army and Navy here on the Conventional Prompt Strike (CPS) program, and our NGC-SW Integrated Product Team (IPT) is responsible for the algorithms and software that control it. Our group includes the Navigation, Guidance, and Control (NG&C or GN&C) subsystem, which flies the missile and glide body, and the embedded Flight Software (FSW) which hosts the NG&C algorithms and provides health, status, and sequencing for the entire system. Additionally, we develop and maintain the Flight Software testbeds (HILs or...
Lockheed Martin
Mar 18, 2026
Senior Staff Project Engineer - Secret Clearance Required
Lockheed Martin Littleton, CO, USA
Description: Who We Are: Come join the Signals Reconnaissance Program within RMS to craft and develop outstanding solutions! The Signals Reconnaissance family of programs supports the C4ISR Line of Business (Command, Control, Communications, and Computers Intelligence, Surveillance and Reconnaissance) as well as Independent Research and Development (IRAD) efforts. These systems demand development of advanced software solutions as well as Performs technical planning, system integration, verification and validation, cost and risk, and supportability and effectiveness analyses for total systems, and information technology related responsibilities including design, development, and analysis of computer systems or programs based on and related to user or system design specifications; applying systems analysis techniques and procedures, including consulting with users to determine hardware, software, or system functional specifications. Analyses are performed at all levels of total...
LMI
Mar 18, 2026
Senior Software Test Engineer - TS Clearance Required
LMI Colorado Springs, CO, USA
Overview LMI is actively seeking a skilled, experienced Senior Software Test Engineer to join LMI’s Space Market modeling and simulation (M&S) development team in Colorado Springs, CO. This role involves working directly with USSF and US Government customers, as well as analytical partners, to translate wargame, exercise, training, and analytic needs into responsive, high-performance software applications within LMI’s Modeling, Simulation, Prototyping, Wargaming, & Analysis platform, RAPTR ® .   The ideal candidate is adept at applying systems engineering principles in modern software environments, with strong understanding of software integration and testing, and familiarity with DevSecOps pipelines, CI/CD practices, and cloud-native architectures. Candidates should be comfortable working across disciplines to integrate and test modeling and simulation software in secure environments (both on-prem and cloud-based), collaborating closely with...
Lockheed Martin
Mar 17, 2026
Opto-Mechanical Engineer
Lockheed Martin Louisville, 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 Optical Talent Center at Lockheed Martin Space is seeking an Opto-Mechanical...
Lockheed Martin
Mar 17, 2026
Electro-Optical Model Based Systems Engineer (Level III)
Lockheed Martin Louisville, 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, in-vest, 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 work-force 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. Lockheed Martin Space is seeking an Electro-Optical MBSE Systems Engineer to join...
Lockheed Martin
Mar 13, 2026
Lab Manager / Engineering Technician
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. Lockheed Martin is leading the way in hypersonic missile development and we want you to be a part of it! We are creating the first hypersonic boost/glide system for the US Army and Navy here on the Conventional Prompt Strike (CPS) program, and our NGC-SW Integrated Product Team (IPT) is responsible for the algorithms and software that control it. Our group includes the Navigation, Guidance, and Control (NG&C or GN&C) subsystem, which flies the missile and glide body, and the embedded Flight Software (FSW) which hosts the NG&C algorithms and provides health, status, and sequencing for the entire system. Additionally, we develop and maintain the Flight Software testbeds (HILs or...
Lockheed Martin
Mar 13, 2026
Electrical Component Engineer / Electrical Engineer, Sr. (Level III)
Lockheed Martin Englewood, CO, USA
Description: "Ahead of Ready" About Lockheed Martin Space: 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 About the Team: For over 60...
Lockheed Martin
Mar 12, 2026
Software Quality Engineer, Asc. Mgr.
Lockheed Martin Littleton, CO, USA
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,...
Lockheed Martin
Mar 12, 2026
RF Engineer Associate
Lockheed Martin Littleton, CO, USA
Description: ***This position is contingent upon contract award to Lockheed Martin. Estimated award date is currently April 2026. Any job offers extended to chosen candidates will include a contingency clause stating that the offer is dependent on Lockheed Martin securing the contract.*** Lockheed Martin Space is seeking an early career RF Engineer to join our team in Littleton, CO! As an RF Engineer, you will architect, design, and develop RF systems and circuitry, including receivers, transmitters, antennas, and frequency synthesizers. You will also perform hardware layout, component evaluation, prototype construction, and test, while supporting manufacturing during assembly and verification. You will also develop RF system and subsystem architectures, perform link analysis, and track technical performance metrics to ensure design integrity and mission success. This role is a balance of design and hands-on work. Responsibilities as an RF Engineer include: - Research,...
Arrow Electronics
Mar 11, 2026
Sr. AEM Engineer Denver USA
Arrow Electronics Centennial, CO, USA
Position: Sr. AEM Engineer Denver USA Job Description: Senior Adobe Experience Manager (AEM) Developer / Architect Job Description Summary Principal Accountabilities Focuses on application development and tools. Ability to write code and test new and innovative web applications, integrate web tools or new features, develop or integrate new code, maintain and address existing code. Application development of global websites using C++, Java, XML, HTML, CGI, JSP, Javascript, AJAX, multimedia applications, database and data modeling tools and other languages or software tools as needed. Maintaining web standards and best practices. Design user interfaces within existing style guidelines. Actively participate in user interface implementation from initial planning/design to project release. Effectively communicate conceptual ideas, design rationale and the specifics of user centered design process. Actively plan, analyze and review functional and technical specification...
Arrow Electronics
Mar 11, 2026
Sr. ReactJS Engineer at Denver USA
Arrow Electronics Centennial, CO, USA
Position: Sr. ReactJS Engineer at Denver USA Job Description: Senior React Developer (React, TypeScript, Node.js)/ Architect Justification Senior React Developer (React, TypeScript, Node.js) Principal Accountabilities ● Focuses on application development and tools. Ability to write code and test new and innovative web applications, integrate web tools or new features, develop or integrate new code, maintain and address existing code. ● Application development of global websites using C++, Java, XML, HTML, CGI, JSP, Javascript, AJAX, multimedia applications, database and data modeling tools and other languages or software tools as needed. Maintaining web standards and best practices. ● Design user interfaces within existing style guidelines. Actively participate in user interface implementation from initial planning/design to project release. Effectively communicate conceptual ideas, design rationale and the specifics of user centered design process. ● Actively plan,...
Lockheed Martin
Mar 11, 2026
Electromagnetic Environmental Effects (E3) Engineer
Lockheed Martin Littleton, CO, USA
Description: "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. As an Electromagnetic Engineering Effects (E3) Engineer, you will support the System Engineering (SE) Special Disciplines Organization within...
Lockheed Martin
Mar 10, 2026
Project Engineer, Senior - Configuration Data Management
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. For over 70 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s...
Lockheed Martin
Mar 10, 2026
Computer Vision Software Engineer, Senior (Level III)
Lockheed Martin Littleton, CO, USA
Description: About Lockheed Martin Space : 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. About the Team : You’ll collaborate with some of the...
Lockheed Martin
Mar 10, 2026
Proposal Lead
Lockheed Martin Englewood, 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. This position is for the Fleet Ballistic Missiles (FBM) program, one of Lockheed Martin’s...
General Dynamics Mission Systems, Inc
Mar 09, 2026
RF Systems Architect Engineer
General Dynamics Mission Systems, Inc Colorado Springs, CO, USA
Basic Qualifications Education Requirements: Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 10+ years of job-related experience, or a Master's degree plus 8 years of job-related experience. Agile experience preferred.   Clearance Requirements: Ability to obtain a Department of Defense Secret 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 ROLE AND POSITION OBJECTIVES: As a Senior RF Systems Architect E ngineer fo r Advanced Electronics Systems , you’ ll lead a cross functional team responsible for envisioning and realizing the next generation...
LMI
Mar 08, 2026
Principal Analytics Engineer
LMI Colorado Springs, CO, USA
Overview 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 drive lasting value. Responsibilities LMI is seeking a Principal Systems Engineer who can blend expertise in physics‑based modeling with a strong grasp of networked data systems—both in 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 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
Feb 27, 2026
Senior Thermal Analyst
Lockheed Martin Highlands Ranch, 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. Lockheed Martin Space is seeking a full-time Senior Mechanical Engineer (Thermal...
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