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27 principal software engineer jobs found

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General Dynamics Mission Systems, Inc
Feb 18, 2026
Senior Principal Embedded Software Engineer
General Dynamics Mission Systems, Inc MD, USA
Basic Qualifications Education Requirements: Requires a Bachelor’s degree in Software 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: Department of Defense Top 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:   What sets you apart: Creative thinker with demonstrated success leading the software development life cycle Collaborative team player eager to provide technical leadership and...
SAIC
Mar 04, 2026
Senior Software Engineer
SAIC AL
Description SAIC is seeking a Principal Software Engineer to contribute advanced technical expertise to the complete rewrite of the Interoperability Engineering System (IES) in Huntsville, AL . IES is a desktop application used by the U.S. Army for Link 16 scenario generation, scripting, and data analysis. This role focuses on designing, developing, and implementing a modern, scalable software solution from scratch. The Principal Software Developer will apply deep knowledge of software engineering principles to create high-quality, efficient, and maintainable code. You will work closely with an Agile team to collaborate on innovative solutions and deliver a robust application. Responsibilities: Design and develop a new software architecture to replace the existing IES application using best practices and modern tools. Develop high-performance desktop application features using C++, C#, .NET, and WPF. Collaborate with the Agile development team and customer...
SAIC
Mar 04, 2026
Principal Systems Engineer
SAIC UT
Description SAIC is seeking an exceptional Principal Systems Engineer to provide critical interface management and integration support to one of the Department of Defense's most complex and vital acquisition efforts - the Sentinel Intercontinental Ballistic Missile (ICBM) Program. This position offers a unique opportunity to contribute to the modernization of the U.S. Air Force's land-based strategic deterrent, ensuring its operational readiness and sustainability well into the 21st century. This position is located at Hill AFB, UT. The Sentinel ICBM Program, formerly known as the Ground Based Strategic Deterrent (GBSD), is a massive, multi-faceted initiative to replace the aging LGM-30G Minuteman III weapon system. This career-defining program involves designing and integrating advanced ballistic missile systems, refurbishing or replacing key infrastructure, and fielding state-of-the-art command, control, and support systems. As a Senior Systems Engineer, you will provide...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Advanced Software Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Software Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : 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 Key Responsibilities: Serve as principal technical authority and strategic leader for SLCM-N software architecture and development Define and drive technical vision, architectural standards, and long-term roadmaps for complex weapon system software Lead development...
General Dynamics Mission Systems, Inc
Feb 12, 2026
Sr Advanced Systems Engineer
General Dynamics Mission Systems, Inc Manassas, VA, USA
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 8+ years of job-related experience, or a Master's degree plus 6 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: : 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 Key Responsibilities: Serve as principal technical authority for systems engineering on payload systems program, providing strategic direction and vision Define and drive systems engineering strategy, architectural standards, and technical roadmaps that align with...
Lockheed Martin
Jan 14, 2026
Cyber Software Engineer Sr Stf – DSP
Lockheed Martin Fort Meade, MD, USA
Description: This position is participating in our External Referral Program. If you know somebody who may be a fit, click here to submit a referral. If your referral is hired, you'll receive a $3000 payment! code-extrefer This position may be eligible for up to $25K sign on bonus for external hires! Cyber Software Engineer Principal - DSP Digital Signal Processing What We’re Doing: Lockheed Martin, Cyber & Intelligence invites you to step up to one of today’s most daunting challenges: the evolving threat of cyber warfare. As a cyber security professional at Lockheed Martin, you’ll protect the networks that our citizens and the world depend upon each minute. Here, you’ll work with cybersecurity experts on the forefront of threat protection and proactive prevention. In this fast-paced, real-world environment, you’ll draw on all your education and experience as well as the resources of Lockheed Martin to keep the threats at bay. Cyber | Lockheed Martin The Work: The GG...
SAIC
Jan 14, 2026
Information System Security Engineer
SAIC VA
Description SAIC is seeking an Information System Security Engineer (ISSE) to provide information security support. This position is in McLean, VA and requires an active TS/SCI clearance with Polygraph . This Customer's office is the force of choice for the development of global infrastructure and delivery of solutions that drive influence operations. If you have specialized skills in information security and tech ops, this is the role for you. Job responsibilities include, but are not limited to: Support the Lifecycle Assessment and Authorization (A&A) process. Develop a Systems Security Plan (SSP). Assist and maintain a formal Information Security Program that includes recommendations on continuous improvement of the processes and architectures. Maintain and make accessible documentation of all operational and business process activities in the form of Standard Operating Procedures (SOPs). Monitor and track projects in the A&A queue....
SAIC
Sep 10, 2025
Principal Electrical Engineer
SAIC IN
Description SAIC is seeking a Principal Electrical Engineer in Indianapolis, IN. JOB DESCRIPTION: Researches, designs, develops, modifies, evaluates and tests a variety of electronic equipment and systems, including radar and radiation detection equipment; radio, television and other communications equipment and systems; circuitry components; analog and digital computers; and control and test equipment. Conducts experimental tests on equipment and evaluates results. Develops specifications for selecting components and equipment to use. May also review vendors' abilities to support development. SCOPE: Applies extensive technical expertise and has full knowledge of other related disciplines. Receives assignments in the form of objectives and establishes goals to meet objectives. Provides guidance to subordinates to achieve goals in accordance with established policies. Work is reviewed and measured based on meeting objectives and schedules....
Lockheed Martin
Mar 06, 2026
Software Engineer Senior - Embedded, Dallas, TX
Lockheed Martin Grand Prairie, TX, USA
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 Software Engineer at MFC, you will join one of the largest networks of software professionals, implementing cutting edge technologies on both...
Lockheed Martin
Mar 04, 2026
Embedded Software Engineer - Orlando, FL
Lockheed Martin Orlando, FL, USA
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. What You Will Be Doing As a Software Engineer, your responsibilities will include but are not limited to: - Develop and maintain embedded...
Lockheed Martin
Mar 03, 2026
Software Engineer / Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX, USA
Description: You will be the Software Engineer Sr for the Lockheed Martin Missiles and Fire Control (MFC) team. Our team is responsible for designing, developing, and manufacturing precision engagement aerospace and defense systems for the U.S. and allied militaries. 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...
Lockheed Martin
Mar 03, 2026
Software Engineer / Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX, USA
Description: You will be the Software Engineer Sr for the Lockheed Martin Missiles and Fire Control (MFC) team. Our team is responsible for designing, developing, and manufacturing precision engagement aerospace and defense systems for the U.S. and allied militaries. 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...
Lockheed Martin
Mar 03, 2026
Software Engineer / Embedded, Grand Prairie, TX
Lockheed Martin Grand Prairie, TX, USA
Description: You will be the Software Engineer Sr for the Lockheed Martin Missiles and Fire Control (MFC) team. Our team is responsible for designing, developing, and manufacturing precision engagement aerospace and defense systems for the U.S. and allied militaries. 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...
SAIC
Feb 25, 2026
Senior Radio Communication Engineer
SAIC VA
Description SAIC is seeking a Senior Communications Engineer to join our team in support of the Air Operations Center Weapons System (AOC WS) Falconer Program. The position is located at the USAF customer site in Hampton, VA, and reports to the Fielding, Logistics, and Site Support Team (FLSST) IPT Lead. Position can require extensive travel to AOC site worldwide. This position requires a demonstrated understanding and application of Radio Frequency (RF) and configuration management principals and process, mission planning/scheduling along with experience in installation, upgrade, and sustainment of existing AOC Radio / Datalink baseline. The successful candidate will be effective at face-to-face interaction with customers and other contractors to respond to requests for information, support to technical meetings, technical interchanges and enterprise working groups. The candidate must be able to work independently and represent the program and SAIC at meetings and working...
Lockheed Martin
Feb 13, 2026
Borealis Software Engineer / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Software Engineer on our EOTS team at Lockheed Martin. The Electro-Optical Targeting System (EOTS) is the world’s first sensor that combines forward-looking infrared (FLIR) and infrared search and track (IRST) functionality. 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...
Lockheed Martin
Feb 05, 2026
Cyber Systems Security Engineer (Embedded)
Lockheed Martin Grand Prairie, TX, USA
Description: You will be a Cyber Systems Security Engineer in the Program Protection Organization. Our organization oversees all aspects of Anti-Tamper and embedded Cybersecurity across Missiles and Fire Control. We are chartered with providing the skills and innovative technologies to develop, design, produce and sustain secure products across our Lines of Business. What You Will Be Doing As the Cyber Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems • Implementing System Security Engineering solutions...
Lockheed Martin
Feb 05, 2026
Embedded Systems Security Engineer Sr
Lockheed Martin Grand Prairie, TX, USA
Description: You will be a Cyber Systems Security Engineer in the Program Protection Organization. Our organization oversees all aspects of Anti-Tamper and embedded Cybersecurity across Missiles and Fire Control. We are chartered with providing the skills and innovative technologies to develop, design, produce and sustain secure products across our Lines of Business. What You Will Be Doing As the Cyber Systems Security Engineer you will be responsible for providing embedded System Security Engineering design and implementation in all aspects of System Security Engineering (SSE) process in development of Department of Defense (DoD) Weapon Systems. Your responsibilities will include: • Assessing and mitigating System Security threats/risks throughout the embedded Weapon System development life cycle. • Validating System Security Engineering requirements decomposition, allocation and analysis for embedded Weapon Systems. • Implementing System Security Engineering solutions...
Lockheed Martin
Jan 28, 2026
Information System Security Manager (TS/SCI & Expat to Guam Required)
Lockheed Martin King of Prussia, PA, USA
Description: *** PLEASE NOTE THIS POSITION REQUIRES THE CANDIDATE TO EXPATRIATE FULL TIME TO GUAM FOR 6-12 MONTHS WITH POSSIBILITY OF EXTENSION*** IN ADDITION, THE SELECTED CANDIDATE WILL BE REQUIRED TO ATTEND TRAINING IN KING OF PRUSSIA, PA UPON ONBOARDING. Who We Are: Lockheed Martin is a pioneer in cyber security—partnering, innovating, and building cutting edge solutions. Our talented employees tackle the world’s toughest engineering challenges every day, leveraging their unique skills and experiences to design and deliver breakthrough technology. We empower our people to think big, perform with excellence, and create extraordinary products. If you have the passion and courage to dream boldly, join our culture and help build a better tomorrow. We provide the resources, inspiration, and focus you need to succeed. The Work: Lockheed Martin’s Rotary & Mission Systems (RMS) division is seeking an experienced Information System Security Manager (ISSM) to protect mission...
Lockheed Martin
Jan 23, 2026
EOTS Software Engineer - Senior / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Senior Software Engineer on our EOTS team at Lockheed Martin. The Electro-Optical Targeting System (EOTS) is the world’s first sensor that combines forward-looking infrared (FLIR) and infrared search and track (IRST) functionality. 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...
Lockheed Martin
Jan 21, 2026
AURORA Software Engineer - Senior / Embedded / C++ - Orlando, FL
Lockheed Martin Orlando, FL, USA
Description: You will be a Sr. Software Engineer on our team at Lockheed Martin. 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. What You Will Be Doing As a Sr. Software Engineer, your responsibilities...
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