Corporate Gray Online
  • Jobs
  • Companies
  • Post a Job
  • Resume Search
  • Employer Products
  • Job Seeker Products
  • Resources
  • Corporate Gray
  • Absolutely American
  • Proud American E-zine
  • Military Minute Podcast
  • Military Officer Career Conference
  • Sign in
  • Sign up
  • Jobs
  • Companies
  • Post a Job
  • Resume Search
  • Employer Products
  • Job Seeker Products
  • Resources
  • Corporate Gray
  • Absolutely American
  • Proud American E-zine
  • Military Minute Podcast
  • Military Officer Career Conference

158 level 3 software engineer jobs found

Refine Search
Current Search
Security Clearance United States level 3 software engineer
Refine by Job Categories
Information Technology  (535) Engineering  (277) Electronics  (108) Manufacturing  (60) Management  (18) Energy  (18)
Automotive  (10) Program Management  (8) Facilities  (7) Media  (6) Construction  (5) Law Enforcement  (5) Science  (3) Design  (2) Government  (2) Marketing  (2) Field Service (Building Automation)  (2) Field Service (Industrial & Automation)  (2)
More
Refine by State
Colorado  (37) Florida  (36) Texas  (19) Alabama  (14) New Jersey  (13) Pennsylvania  (11)
Massachusetts  (9) Virginia  (9) California  (3) Georgia  (3) New York  (2) Maryland  (1) Nebraska  (1)
More
Refine by City
Orlando  (36) Colorado Springs  (23) Grand Prairie  (15) Huntsville  (13) King of Prussia  (11) Moorestown  (9)
Boulder  (7) Herndon  (6) Dedham  (5) Littleton  (5) Fort Worth  (4) Mount Laurel Township  (4) Marietta  (3) Highlands Ranch  (2) Liverpool  (2) Manassas  (2) Pittsfield  (2) Taunton  (2) Fredericksburg  (1) National City  (1)
More
Refine by Company Name
Lockheed Martin  (141) General Dynamics Mission Systems, Inc  (17)
Refine by Onsite/Remote
Onsite  (158)
Lockheed Martin
May 23, 2026
Software Engineer Sr
Lockheed Martin Herndon, VA
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. And we’re reimagining how space can connect us, ensuring security and prosperity. We’re creating future-ready solutions, focusing on resiliency and urgency through our 21st Century Security® vision. THE WORK Lockheed Martin is seeking a talented level 3 Software Engineer with an active TS/SCI...
Lockheed Martin
Jun 02, 2026
Senior Software Engineer - Level 3 (TS/SCI with Poly)
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 We're seeking a talented and motivated Senior Software Engineer to join our fast-paced...
Lockheed Martin
Apr 30, 2026
Software Engineer Sr - Level 3 - (TS/SCI)
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 LM Space, the Biscayne Program is looking for a highly motivated individual...
Lockheed Martin
Jul 02, 2026
Staff Cyber Security Software Engineer
Lockheed Martin Fort Worth, TX
Description: As a Cyber Software Engineer on the CSS team, you will play a key role in developing innovative cybersecurity solutions and tools to address complex cyber threats. You will collaborate with top-tier professionals to identify vulnerabilities, construct threat models, and engineer advanced tooling to automate processes and strengthen Lockheed Martin's security posture. The IronGuard team offers unparalleled opportunities for growth and visibility. Joining us is an opportunity you won't want to miss! Key Responsibilities • Lead the development of cybersecurity solutions and tools to address complex cyber threats • Conducting comprehensive assessments of code to uncover security vulnerabilities and map potential attack vectors • Collaborate with Software Development teams to integrate static and dynamic testing capabilities into their software pipelines • Designing, implementing, and integrating tools to automate the security assessments of software products •...
Lockheed Martin
Jul 02, 2026
Hiring Event | Virtual & In-Person | Cyber Embedded Engineer | Dallas
Lockheed Martin Grand Prairie, TX
Description: Ready to take the next step in your career? Apply today for the opportunity to participate in our upcoming In-Person Hiring Event located in Dallas or for the Virtual Hiring Event for those willing to relocate to Dallas, Texas! *Sign-On Bonus Opportunities* *Work/Life Balance - 4 Day Work Week* *Relocation Assistance* *Zero State Income Tax * *Company will sponsor DoD clearance* *Vibrant Arts & Culture* *Amazing Major Sports Teams* Applying to this Expression of Interest opportunity introduces you to Lockheed Martin's Cyber opportunities and promotes you to managers who are interested in hiring all levels of Experienced Professionals. Selected candidates will have the opportunity to meet hiring leaders, learn more about our organization, and discuss exciting career opportunities available at our Dallas site. Qualified applicants may be invited to interview during the event, providing a streamlined path to connect directly with decision-makers and...
Lockheed Martin
Jul 02, 2026
Lead Electrical Power Engineer
Lockheed Martin Moorestown, NJ
Description: What We're Doing Lockheed Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter. As the premier developer of active electronically scanned array (AESA) radars and integrated air and missile defense solutions for the U.S. military, our allies, and more than 45 nations worldwide, we deliver world class situational awareness, early warning, and kill assessment capabilities in the most demanding environments. Join a global team of 35 000 engineers, software developers, and cyber experts who turn complex challenges into reliable, next generation systems that keep warfighters ahead of emerging threats. Your talent will power everything from space domain awareness to ground based radar testbeds, ensuring the safety of today’s forces and the security of tomorrow’s world. The Work Successful can will: The Level 4 Power Systems Engineer is a senior technical contributor...
Lockheed Martin
Jul 02, 2026
DevSecOps Engineer, Sr. - Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX
Description: Lockheed Martin is a global security and aerospace company that employs approximately 114,000 people worldwide and is principally engaged in the research, design, development, manufacture, integration and sustainment of advanced technology systems, products and services. Lockheed Martin Missiles and Fire Control (MFC) is one of four Lockheed Martin business areas. MFC is a recognized designer, developer and manufacturer of precision engagement aerospace and defense systems for the U.S. and allied militaries. MFC develops, manufactures and supports advanced products for military customers that include the U.S. Army, Navy, Air Force, Marine Corps, NASA and dozens of foreign allies. MFC also offers a wide range of products and services for the global civil nuclear power industry and the military’s green power initiatives. As a Senior Software Engineer at MFC, you will join one of the largest networks of software professionals, implementing cutting edge technologies...
Lockheed Martin
Jul 02, 2026
Missile/Sensor Development Lead Systems Engineer
Lockheed Martin Orlando, FL
Description: Lockheed Martin is seeking a Lead Systems Engineer for our Missile/Sensor development programs.This position reports to the Program's Chief Engineer and will provide day-to-day interface with Program Manager, program engineering leads, suppliers and the Customer. The position is responsible for all technical performance and risk reduction activities for the weapon system development effort from Conops and system trades to requirements and compliance, implementation, integration, and verification, including transition to production and design upgrades required for intended applications. The candidate must have the experience, drive, and demonstrated capability to lead a team of engineers of multiple disciplines to provide technical excellence and mission success. Experience in missile and/or sensor design, development, and testing is required. Knowledge in key technologies is also desired and includes: GPS systems, processor architecture, aerodynamics, GNC, data links,...
Lockheed Martin
Jun 25, 2026
Cyber Software Engineer Sr
Lockheed Martin Orlando, FL
Description: WHAT WE’RE DOING At Lockheed Martin, we are pushing the boundaries of innovation to solve some of the world’s most complex challenges. In our Rotary and Mission Systems (RMS) division, we are focused on advancing security and resilience for critical defense systems, with a particular emphasis on F-35 Training & Logistics. Our team is dedicated to applying cutting-edge cybersecurity solutions that safeguard the integrity of systems throughout their lifecycle. We are passionate about ensuring that these systems remain resilient to evolving cyber threats, supporting both the F-35 and other essential training and logistics operations. THE WORK As a Cyber Software Engineer, you will secure, automated delivery of mission‑critical software for PTD and TIPS systems. You will embed Infrastructure as Code (IaC), CI/CD pipelines, and rigorous threat‑modeling practices into every stage of the development lifecycle, ensuring continuous monitoring, rapid remediation, and...
Lockheed Martin
Jun 25, 2026
Senior Software Engineer
Lockheed Martin Moorestown, NJ
Description: What We're Doing Lockheed Martin is shaping the future of defense through cutting edge radar and missile defense technologies, and we want you to help write the next chapter. As the premier developer of active electronically scanned array (AESA) radars and integrated air and missile defense solutions for the U.S. military, our allies, and more than 45 nations worldwide, we deliver world class situational awareness, early warning, and kill assessment capabilities in the most demanding environments. Join a global team of 35 000 engineers, software developers, and cyber experts who turn complex challenges into reliable, next generation systems that keep warfighters ahead of emerging threats. Your talent will power everything from space domain awareness to ground based radar testbeds, ensuring the safety of today’s forces and the security of tomorrow’s world. The Work The Lockheed Martin Rotary & Mission Systems Senior Software Engineer will have the...
Lockheed Martin
Jun 25, 2026
Systems Engineer
Lockheed Martin Mount Laurel Township, NJ
Description: What We're Doing As a part of the Lockheed Martin community, we take on challenges and find solutions using creativity and collaboration. If you’re looking to be a part of a passionate team solving these complex problems, then Rotary and Mission Systems is the place for you. The Work Lockheed Martin Rotary Mission Systems in Moorestown, New Jersey is seeking a full time Systems Engineer. In this role, you will define mission critical requirements, develop windows and user interfaces for military personnel user experience, and integrate new capabilities into the premier self-defense system for the United States and allied Navies, the Aegis Combat System. The successful candidate will have experience and/or knowledge of Java, C++, or Python and Linux/UNIX operating systems, experience in requirement development, experience user interface development, and experience in issue investigation. Must be a US Citizen; this position will require a government security...
Lockheed Martin
Jun 24, 2026
Software Engineer Sr
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. 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. And we’re reimagining how space can connect us, ensuring security and prosperity. 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...
Lockheed Martin
Jun 24, 2026
Software Quality Engineer (SSQE) - Orlando, FL
Lockheed Martin Orlando, FL
Description: You will be the Software Quality Engineer for the Missiles and Fire Control (MFC) team. Our team is responsible for pioneering high-performance air and missile defense, air-to-air, precision fires, close combat, sustainment, sensors, strike system, and energy storage solutions to support our warfighting and civilian customers. What You Will Be Doing As the Software Quality Engineer, you will be responsible for ensuring the quality of our software solutions, collaborating with cross-functional teams to deliver innovative products. Your expertise will play a critical role in driving the success of our programs, and you will have opportunities to work on a wide range of projects that impact national security. Your responsibilities will include: • Developing and implementing software quality processes and procedures • Collaborating with development teams to identify and mitigate software risks • Analyzing and resolving software quality issues • Participating in...
Lockheed Martin
Jun 24, 2026
Cyber Systems Security Engineer Sr
Lockheed Martin King of Prussia, PA
Description: Cyber Systems Security Engineer (CSSE) – TTWCS Program 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 As a Cyber Systems Security Engineer (CSSE) supporting the TTWCS program, you will: Perform periodic manual and automated STIG evaluations, tracking deltas across versions and platforms. Conduct cyber risk assessment activities, including threat modeling, vulnerability analysis, and evaluation of mitigation strategies. Develop, analyze, and validate security AI design constraints within the cyber domain. Collaborate with cybersecurity engineers, system architects, and developers to...
Lockheed Martin
Jun 24, 2026
Software Engineer – Secret Clearance
Lockheed Martin Colorado Springs, CO
Description: What We're Doing Our Team, the Command and Control, Battle Management and Communications (C2BMC) Experimentation Lab (X-LAB) is a very fast paced and dynamic environment. It is engineering, developing and integrating new capability for the Missile Defense System that currently protects the United States and its allies. The team consists of many small agile teams that work together in a fast-paced and dynamic environment. Our team is also, responsible for tasks such as Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security and enhancing other critical, leading-edge missile defense technologies. What You Will Be Doing We are seeking a detail-oriented and highly motivated mid-level software engineer to join our team in Colorado Springs to develop and test innovative solutions in support of X-Lab projects and experiments. Please Note: • This position requires a government security clearance at the Secret...
Lockheed Martin
Jun 24, 2026
Software Engineer Associate (Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: What We’re Doing Our team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. The Work Lockheed Martin is seeking a software engineer that will thrive in a fast paced team environment in the design, development, and testing of software applications. Under minimal direction, provides specialized expertise within multiple systems, software disciplines, as well as general knowledge of related disciplines, applications implications, and customer areas. Common responsibilities of a software engineer on the agile development teams include: •...
Lockheed Martin
Jun 19, 2026
Software Engineer Staff (Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Our team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. THE WORK Lockheed Martin is seeking a software engineer that will thrive in a fast paced team environment in the design, development, and testing of software applications. Under minimal direction, provides specialized expertise within multiple systems, software disciplines, as well as general knowledge of related disciplines, applications implications, and customer areas. Common responsibilities of a software engineer on the agile development teams include: •...
Lockheed Martin
Jun 19, 2026
Software Engineer Sr (Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Our team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. THE WORK Lockheed Martin is seeking a software engineer that will thrive in a fast paced team environment in the design, development, and testing of software applications. Under minimal direction, provides specialized expertise within multiple systems, software disciplines, as well as general knowledge of related disciplines, applications implications, and customer areas. Common responsibilities of a software engineer on the agile development teams include: •...
Lockheed Martin
Jun 19, 2026
Software Engineer (Secret Clearance)
Lockheed Martin Colorado Springs, CO
Description: WHAT WE'RE DOING Our team at Lockheed Martin, is dedicated to engineering, developing, and integrating new capabilities for the Missile Defense System that protects the United States and its allies. While we are part of a large organization, we operate within smaller, agile teams in a fast-paced, dynamic environment. Our responsibilities include Sensor/Weapon Integration, Algorithm Development, User Interface Development, Automated Testing, Cyber Security, and enhancing critical missile defense technologies. THE WORK Lockheed Martin is seeking a software engineer that will thrive in a fast paced team environment in the design, development, and testing of software applications. Under minimal direction, provides specialized expertise within multiple systems, software disciplines, as well as general knowledge of related disciplines, applications implications, and customer areas. Common responsibilities of a software engineer on the agile development teams include: •...
Lockheed Martin
Jun 19, 2026
Sr Systems Engineer-GMD Weapons Systems
Lockheed Martin Huntsville, AL
Description: What We're Doing Become a part of something IMPACT-ful! Ground Missile Defense (GMD) is the heart of the Missile Defense System and a key element of our nation’s defense against ballistic missile attacks. The GMD Weapon System (GWS) processes data from multiple sensors to identify and characterize the inbound ballistic missile threat, plans the best defensive solution, and launches the intercepting missiles to negate the threat. The Work The selected Systems Engineer responsibilities will include the support of the Ground Weapons System (GWS) program as an individual contributor on the A&D Requirements team. This role is responsible for developing Systems Engineering products that directly support the design and development of the GWS capability on behalf of the Missile Defense Agency (MDA). -The selected candidate should thrive in a fast-paced work environment with high expectations, collaborative/teams comprised of all experience levels. -Due to the...
  • Home
  • Contact
  • About Us
  • Terms & Conditions
  • Employer
  • Post a Job
  • Search Resumes
  • Sign in
  • Job Seeker
  • Find Jobs
  • Create Resume
  • Sign in
  • Facebook
  • X
  • Instagram
  • LinkedIn
© 2008-2026 Corporate Gray, powered by Absolutely American, Inc.