Staff Cyber Security Software Engineer

**JOB ID:** 733580BR **Date posted:** Jul. 01, 2026 **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 * Developing the execution of fuzz testing protocols on embedded systems to unearth latent weaknesses and fortify defenses against potential exploits * Evaluating open\-source packages to identify vulnerabilities and maliciously implanted software * Provide guidance and expertise to team members on cybersecurity best practices and threat modeling techniques * Act as a subject matter expert in cybersecurity and software development, providing guidance across Lines of Business **What’s In It For You:** We offer flexible work schedules to comprehensive benefits investing in your future and security, Do you want to be part of a company culture that empowers employees to think big, lead with a growth mindset, and make the impossible a reality? We provide the resources and give you the flexibility to enable inspiration and focus \-if you have the passion and courage to dream big, work hard, and have fun doing w