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9 software engineer iii jobs found

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Security Clearance software engineer iii
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Lockheed Martin
Jun 19, 2026
Senior Software Engineer (Level III) - Top Secret clearance
Lockheed Martin Littleton, CO
Description: Position details: Location: Littleton, CO Work Schedule: 9x80 Position type: Full-time onsite (this is not a hybrid position) _____________________________________________ 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...
SAIC
Jun 17, 2026
Senior Radio Communication Engineer
SAIC VA
Description SAIC is seeking a highly skilled Senior Communications Engineer to join our team in support of the Air Operations Center Weapons System (AOC WS) Falconer Program. Located at the USAF customer site in Hampton, VA, this critical role reports directly to the Fielding, Logistics, and Site Support Team (FLSST) IPT Lead. In this role, you will apply your advanced expertise in Radio Frequency (RF) systems, configuration management, and tactical datalinks to install, modernize, and sustain the operational AOC baseline. Serving as a key representative of SAIC and the Falconer Program, you will operate with a high degree of autonomy, interfacing face-to-face with government customers and associate contractors to drive mission success. Please note: This position requires readiness for extensive global travel to various AOC sites. Key Responsibilities: • System Sustainment & Upgrades: Drive the day-to-day sustainment and major modernization of the fielded AOC RF...
SAIC
Jun 17, 2026
Nuclear Surety Engineer
SAIC UT
Description SAIC is seeking a motivated and detail-oriented Nuclear Surety Engineer to provide critical 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 and sustainment of the U.S. Air Force's land-based strategic deterrent, ensuring its safety, security, and operational readiness well into the 21st century. The Sentinel ICBM Program is a large-scale, multi-faceted initiative to replace the aging LGM-30G Minuteman III weapon system. Modernization efforts involve the design, certification, and deployment of advanced nuclear-capable missile systems, along with upgraded infrastructure, command and control, and support systems. As a Nuclear Surety Engineer, you will leverage your systems engineering background to help ensure these systems meet the highest nuclear safety, reliability, and...
SAIC
May 27, 2026
Senior Network Engineer
SAIC HI
Description SAIC has an opportunity for a Network Engineer located in Pearl City, Hawaii to support USINDOPACOM on the Software, Simulation, System Engineering and Integration (S3I) Directorate, DEVCOM Aviation & Missile Center (AvMC) program to assist in analyzing, project planning, developing, implementing, maintaining and troubleshooting tier III large complex systems and networks. JOB DESCRIPTION: Identify and resolve tier III technical issues related to system performance, network connectivity, and security vulnerabilities. Support the team of system and network administrators and engineers who deliver mission critical infrastructure, and continually ensure the highest levels of accessibility, optimization, and security. Assist maintaining, troubleshooting and enhancing large complex systems and networks consisting of servers, computers, LANS, WANs and the physical and logical components that integrate these systems together as an enterprise...
General Dynamics Mission Systems, Inc
May 14, 2026
Advanced Systems Engineer
General Dynamics Mission Systems, Inc Groton, CT
Basic Qualifications Requires a Bachelor’s degree in Systems Engineering, or a related Science, Engineering, Technology or Mathematics field. Also requires 5+ years of job-related experience, or a Master's degree plus 3 years of job-related experience. Agile experience preferred.     CLEARANCE REQUIREMENTS: Department of Defense Secret security clearance is preferred 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:   We are seeking an experienced Tech Lead Software & Systems Integrator III to lead integration efforts across complex multi-platform systems. This role serves as the technical authority for systems integration activities, guiding...
Lockheed Martin
May 02, 2026
Information Systems Security Officer, Classified Cybersecurity
Lockheed Martin King of Prussia, PA
Description: Top Secret security clearance with ability to obtain SCI Eligibility and Polygraph. This position will perform duties as a Classified Cybersecurity Information Systems Security Officer (ISSO) for systems located at the LM Space facility in Valley Forge PA. The work that Cybersecurity ISSO’s do can be summarized in this way: - You will have a direct impact to national security, ultimately contributing to protecting your loved ones – this is dynamic, gratifying and impactful work! - You will have the opportunity to engage in all aspects of the cyber discipline - You can enjoy a work-life balance that allows for flex hours and a family-first culture. Key Responsibilities of this role includes: - Oversee day-to-day information system security operations including hardware and software implementations. - Carry out technical administration of IS in accordance with internal LM and customer security requirements, primarily Risk Management Framework (RMF). - Upkeep,...
SAIC
Apr 08, 2026
Systems Engineer SME
SAIC IL
Description SAIC is seeking a Systems Engineer for the Cloud team to support an IT Service Management effort for USTRANSCOM located at Scott Air Force Base (AFB) in Illinois. The USTC Managed Information Technology Services (MITS) contract is intended to provide strategic, technical, and program management guidance and support services to facilitate the operations and modernization of the combatant command's infrastructure, systems, and applications. This support will be provided to the USTC Command, Control, Communications & Cyber Systems Directorate (TCJ6). The successful candidate initiates, supervises, and/or develops requirements from a project's inception to conclusion for complex to extremely complex programs; Provides strategic advice, technical guidance and expertise to program and project staff; Provides detailed analysis, evaluation and recommendations for improvements, optimization development, and/or maintenance efforts for client-specific or mission critical...
Lockheed Martin
Jun 12, 2026
Cyber Software Engineer II
Lockheed Martin Littleton, CO
Description: The Cyber Software Engineer (level 2) is a mid‑level role that requires owing security outcomes across the product lifecycle. In this position you will lead the definition of security architecture for new features and major refactors, conduct threat‑modeling investigations, and translate product requirements into concrete security controls. Responsibilities include spearheading comprehensive vulnerability assessments (static, dynamic, and dependency‑scanning) prioritizing vulnerability remediation, and ensuring continuous compliance with frameworks such as NIST, ISO 27001, and DoD RMF. The Cyber Software Engineer (level 2) will design, develop, and maintain advanced Python‑based automation that embeds security gates, secret scanning, policy‑as‑code, and automated remediation into CI/CD pipelines (GitLab, DevOps, Jenkins), and will evaluate emerging tools (e.g., SBOM generators, runtime protection platforms) for enterprise adoption. Authoring clear, detailed security...
General Dynamics Mission Systems, Inc
May 16, 2026
Engineering Technician
General Dynamics Mission Systems, Inc Port Hueneme, CA
Basic Qualifications Associate’s degree in related discipline or equivalent is required plus a minimum of 1 year of relevant experience. 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 Help make the technologies, products and services that make a difference. That’s the opportunity that’s waiting for you at General Dynamics Mission Systems. We help our nation’s heroes keep our nation safe by creating solutions so advanced, they redefine innovation for the world. It’s an amazing challenge. And it’s waiting for you now. We apply advanced technologies such as Artificial Intelligence, Blockchain,...
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