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390 security clearance jobs found in King of Prussia, PA

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Lockheed Martin
Jul 10, 2026
Software Engineer Sr - Level 3 (Top Secret)
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Jul 10, 2026
Senior DevSecOps Engineer - Clearance Required
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Joint Air-to-Surface Standoff Missile (JASSM) is a United States Air Force (USAF) program to provide an autonomous, long-range, conventional, air-to-ground, precision missile able to strike highly defended, high value targets. JASSM Enterprise Software (JES) was developed to improves quality and speed in targeting and strike planning solutions across multiple 363rd Intelligence, Surveillance and Reconnaissance Group (363 ISRG) production units and the Standoff Munitions Application Centers (SMAC). THE WORK • Maintain JES portfolio application pipelines and test and integration environments. • Support developers in maintaining their local development environments, particularly in installing and maintaining local software and connectivity to supporting software. • Coordinate with Fielding and Operations team on delivery schedules and provide release candidate builds to required environments for testing and test signoff in keeping with those...
Lockheed Martin
Jul 10, 2026
Lead DevSecOps Engineer - Clearance Required
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Joint Air-to-Surface Standoff Missile (JASSM) is a United States Air Force (USAF) program to provide an autonomous, long-range, conventional, air-to-ground, precision missile able to strike highly defended, high value targets. JASSM Enterprise Software (JES) was developed to improves quality and speed in targeting and strike planning solutions across multiple 363rd Intelligence, Surveillance and Reconnaissance Group (363 ISRG) production units and the Standoff Munitions Application Centers (SMAC). THE WORK • Ensures software baselines are Configuration Managed and properly tagged + versioned • Ensures key software measures, including total, added, modified, and removed Source Lines of Code (SLOC) are tracked for each software release. • Manages the configuration and documentation of the current state of software development-specific licenses, tools, and libraries, including COTS and FOSS, through a human-readable Software Bill of Materials...
Lockheed Martin
Jul 10, 2026
Senior Software Engineer
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING Come join the CommandIQ® (CIQ) team – a product line established in 2025 with sizable investment and support from RMS senior leadership. We are developing mission critical Battle Management and Command & Control capabilities for a complete Command and Control mission suite. Our solution provides the open architecture as well as mission apps that can be customized to each user’s needs. Customers can also easily integrate their favorite tools into a single CommandIQ® Common Operating Picture (COP) to meet their own, specialized mission requirements. Join us and become a part of the team that is actively designing and developing the initial baseline which has already generated significant customer interest both domestically and internationally! Check out these links for more information about our exciting suite of products: https://www.lockheedmartin.com/en-us/products/command-and-control.html https://www.youtube.com/watch?v=mYu06sRV398 THE WORK...
Lockheed Martin
Jul 10, 2026
Software Engineer Sr
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING The Aircraft Media Gateway program enables the P-8A aircraft to deliver advanced maritime and littoral Intelligence, Surveillance, and Reconnaissance (ISR) capabilities, equipping the United States Navy to effectively counter existing, evolving, and emerging threats. THE WORK As a member of our team, you will work in an agile scrum development environment, where you will design and develop technically complex software systems. In this role, you will be responsible for supporting the generation of reliable and reproducible media builds. Additionally, you will provide support for external network interfaces for data ingest and offload, as well as hardware rack builds. Working with the rest of the team, you will be responsible for maintaining the program lab infrastructure and performing on-site hardware installs and integration. Success in this role requires the ability to effectively interact with and present to various stakeholders, including...
Lockheed Martin
Jul 10, 2026
WPI Financial Analyst
Lockheed Martin King of Prussia, PA
Description: This Program Finance Analyst position is in support of the Distributed Common Ground System (DCGS) Program. The successful candidate will work cross functionally alongside Program Management, CAM's, engineers, Sourcing, as well as our own finance organization to meet the expectations of this fast-paced program and will be responsible for, but not limited to: - Manage the Level of Effort CLINs’ business rhythms - Collaborate with Program Leads to prepare accurate Estimate at Completion (EAC)s monthly including identification and tracking of financial risks and opportunities - Execute Earned Value Management (EVM) activities including Program baselines, subcontractor data integration, EAC/ETC analysis, CDRL preparation and delivery - Provide financial leadership and guidance to Program leads in a cost-conscious culture; communicate financial metrics required to ensure focus on cost control - Proactively assess program spend and communicate funding needs based on EAC’s -...
Lockheed Martin
Jul 10, 2026
Sr. Staff Engineering Program Manager - Top Secret Clearance Required
Lockheed Martin King of Prussia, PA
Description: WHAT WE'RE DOING The U-2S aircraft provides high-altitude, all-weather surveillance and reconnaissance, day or night, in direct support of U.S. and allied forces. It delivers critical imagery and signals intelligence to decision makers throughout all phases of conflict, including peacetime indications and warnings, low-intensity conflict, and large-scale hostilities. Lockheed Martin (LM) provides the engineering disciplines to continually improve the avionics and ISR systems employed on the U-2S. The Aero Palmdale, Aero Fort Worth and RMS Valley Forge sites are actively involved in supporting upgrades to the U-2 platform capabilities. WHO WE ARE The LM Valley Forge site Datalinks Team is currently supporting the following upgrades on the aircraft: • Integrating a Tactical Data Link (Link 16) on the U-2S and developing the Pilot Vehicle Interface (PVI) for Link 16 radio control and tactical situational awareness, Electronic Warfare (EW) situational...
Lockheed Martin
Jul 10, 2026
Project Engineer Staff (IC4)
Lockheed Martin King of Prussia, PA
Description: For over 60 years, the Fleet Ballistic Missile (FBM) team has supported the Navy’s mission to provide an affordable and credible strategic defense. We offer unique career opportunities and challenges on a program with a rich history and exciting future. We help keep this nation and our allies secure. 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. As a Project Engineer on the Mk7 program within FBM, you will: • Serve as the Mk7 program lead for developing and maintaining programmatic demand between the Mk7 program and the Lockheed Martin Reentry Operations Center (ROC). • Navigate several program management supply and demand tools such as EPDM and SAP • Administer procurement and subcontract management best practices to ensure production commitments are met • Execute project management duties across several...
Lockheed Martin
Jul 10, 2026
Cyber Software Engineer Staff
Lockheed Martin King of Prussia, PA
Description: What We’re Doing At Lockheed Martin Rotary and Mission Systems, we are shaping the future of defense and security through innovation, integrity, and visionary thinking. Our teams apply the highest standards of business ethics and technical expertise to design solutions that safeguard our nation and allies. Every day, we push boundaries to ensure mission success—and we invite you to be part of this critical work. The Work We are seeking a highly motivated Cyber Security Systems Engineer to support the design, implementation, hardening, and sustainment of secure mission systems across both CONUS and OCONUS environments. This role requires strong technical expertise in systems engineering, cybersecurity, infrastructure security, automation, and DevSecOps practices. The ideal candidate will support secure architecture development, system accreditation activities, continuous monitoring, vulnerability management, and automation of security controls within CI/CD...
Lockheed Martin
Jul 10, 2026
Cyber Software Engineer Senior
Lockheed Martin King of Prussia, PA
Description: What We're Doing At Lockheed Martin Rotary and Mission Systems, we are shaping the future of defense and security through innovation, integrity, and visionary thinking. Our teams apply the highest standards of business ethics and technical expertise to design solutions that safeguard our nation and allies. Every day, we push boundaries to ensure mission success—and we invite you to be part of this critical work. Key Responsibilities • Design and implement secure system architectures for enterprise and mission-critical environments. • Apply cybersecurity engineering principles across the full system lifecycle, including requirements, design, implementation, verification, deployment, and sustainment. • Support Risk Management Framework (RMF) activities including control implementation, assessment, evidence collection, and ATO accreditation and sustainment. • Perform security hardening of operating systems, applications, databases, and network devices in...
Lockheed Martin
Jul 10, 2026
Software Engineer Sr - Level 3
Lockheed Martin King of Prussia, PA
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. • Generating and simulating operational level plans to explore the art of the possible,...
Lockheed Martin
Jul 09, 2026
System Engineer - Field Tech Support
Lockheed Martin King of Prussia, PA
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. WHAT WE'RE DOING At Lockheed Martin, we're revolutionizing the aerospace and defense sector through groundbreaking technology, advanced manufacturing processes, and a world-class team of professionals. Our mission-driven approach and unwavering dedication to excellence ensure that we continue to deliver superior products and solutions to our customers around the world. THE WORK The Midway program in King of Prussia, PA is looking for an experienced professional to support the Logistics, Sustainment, and Field Technical Support effort for the program. Midway is a rapid fielding program, which...
Lockheed Martin
Jul 08, 2026
Electrician Maintenance Specialist
Lockheed Martin King of Prussia, PA
Description: Lockheed Martin is seeking an electrical maintenance specialist who wants to be part of a facilities team operating in a data center environment with 24/7 coverage 365 days a year. This role will support the center on first shift and require weekend and holiday work hours as part of the normal work rotation. Hours are 6:30am to 2:30pm. 8-hour shift. 10 days on, 4 days off. Starting Wednesday. Workdays will include every other weekend. Wednesday through the following Friday, then Sat, Sun, Mon, Tues off. This role will have the following responsibilities: - Operate, monitor, and maintain the data center’s electrical infrastructure to include low and medium voltage switchgear, transformer substations, motor control centers, UPS systems, emergency generators, and distribution panels. - Inspect and maintain electrical systems and accessories on cooling towers, chillers, air handling units, exhaust fans, pumps, hot water heaters, motors, controls, and other plant...
Lockheed Martin
Jul 08, 2026
Experimental CNC Machinist III (2nd Shift)
Lockheed Martin King of Prussia, PA
Description: Role Overview As an Experimental CNC Machinist, you will set up, operate, and maintain CNC machining centers to produce precision parts to engineering specifications. You will interpret technical drawings, verify machining programs, inspect finished components, and support continuous improvement of machining processes. This role supports second shift production operations in a high-precision manufacturing environment. Key Responsibilities • Set up and operate horizontal and vertical CNC machining centers • Machine parts using drilling, milling, boring, tapping, and related operations • Interpret CAD data, blueprints, sketches, and operation sheets to guide machining work • Verify and monitor NC (G-code) programs during machine operation • Select, install, and adjust cutting tools and machine setups as needed • Inspect parts during and after machining using precision measurement tools • Perform secondary operations such as deburring and straightening during...
Lockheed Martin
Jul 08, 2026
Experimental CNC Machinist III
Lockheed Martin King of Prussia, PA
Description: Role Overview As an Experimental CNC Machinist, you will set up, operate, and maintain CNC machining centers to produce precision parts to engineering specifications. You will interpret technical drawings, verify machining programs, inspect finished components, and support continuous improvement of machining processes. This role supports production operations in a high-precision manufacturing environment. Key Responsibilities • Set up and operate horizontal and vertical CNC machining centers • Machine parts using drilling, milling, boring, tapping, and related operations • Interpret CAD data, blueprints, sketches, and operation sheets to guide machining work • Verify and monitor NC (G-code) programs during machine operation • Select, install, and adjust cutting tools and machine setups as needed • Inspect parts during and after machining using precision measurement tools • Perform secondary operations such as deburring and straightening during machine cycles •...
Lockheed Martin
Jul 08, 2026
HVAC Technician
Lockheed Martin King of Prussia, PA
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. -- Provide operational oversight and actions to maintain chiller and boiler operations for...
Lockheed Martin
Jul 08, 2026
Senior Software Engineer (Top Secret Clearance)
Lockheed Martin King of Prussia, PA
Description: Lockheed Martin’s Victor Portfolio of Space Security is seeking a highly skilled, motivated, and experienced Senior Software Engineer to join an Agile, cross‑functional team dedicated to protecting critical space assets. This role will focus on developing web‑based applications within an open‑architecture infrastructure that supports mission‑critical space‑security operations. The successful candidate will collaborate with internal development teams and subject‑matter experts, and thrive in a fast‑paced environment where each day brings new challenges. Key Responsibilities • Full‑Lifecycle Development – Design, implement, test, deploy, and maintain web applications and services that enable space‑asset protection. • Agile Collaboration – Participate in Scrum ceremonies (stand‑ups, sprint planning, retrospectives) and contribute to continuous‑improvement of team processes. • Open‑Architecture Integration – Build modular, reusable components that conform to...
Lockheed Martin
Jul 08, 2026
Senior Systems Engineer, Level 3 -Top Secret Clearance Required
Lockheed Martin King of Prussia, PA
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 single day we use our 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. You will be responsible for developing system level artifacts and engaging with customers, mission partners, and other stakeholders to satisfy and fulfill customer directed objectives As a member of the the Systems Engineering/Integration team, in this role you will performing in an accelerated, collaborative, dynamic small team...
Lockheed Martin
Jul 08, 2026
Software Engineer, Level 2 - Top Secret Clearance Required to Start
Lockheed Martin King of Prussia, PA
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. Within the Victor Portfolio of Space Security, we are seeking a highly skilled and...
Lockheed Martin
Jul 08, 2026
Software Engineer Sr - Level 3 - Top Secret Clearance Required
Lockheed Martin King of Prussia, PA
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. Within the Victor Portfolio of Space Security, we are seeking a highly skilled,...
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