Ready to Protect What Matters Most?
If you’re a seasoned Systems Engineer with deep cybersecurity expertise and a passion for safeguarding mission-critical systems, this is your opportunity to make a real impact.
Leidos is seeking a Cybersecurity Systems Engineer to support a highly complex Information Assurance program. In this role, you’ll work at the forefront of national security, ensuring advanced systems meet the highest standards of security, performance, and compliance.
This is more than a job — it’s a chance to influence system design, reduce risk, and protect critical capabilities from evolving threats.
What You’ll Do
As a trusted technical leader, you will:
Contribute to the development and evaluation of key systems engineering documentation, including:
Systems Engineering Plans
Initial Capabilities Documents
Requirements Specifications
Security requirements and security test documentation
Provide technical leadership across system development, integration, and testing activities
Lead requirements elicitation, analysis, and functional allocation efforts
Conduct systems requirements reviews and perform both technical and non-technical assessments
Support planning and test analysis for the DoD Certification & Accreditation (C&A) process and other Government C&A processes
Perform high-assurance cybersecurity evaluation activities for devices undergoing certification
Review and assess security artifacts to ensure compliance with stringent security requirements
Clearly document security deficiencies and provide actionable recommendations
Translate vulnerability insights into practical risk mitigation guidance
Recommend improvements to requirements, processes, and templates to strengthen overall security posture
Collaborate across teams and participate in security-focused meetings and technical reviews
What You Bring
8 years of Systems Engineering experience
Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related field
(Five additional years of Systems Engineering experience may substitute for a degree)
Strong background in Information Assurance and/or Cryptographic systems
Exceptional written and verbal communication skills
Experience working in collaborative team environments and leading small technical teams
Active TS/SCI with Polygraph clearance
Bonus Experience
Experience supporting Space, Weapon, Ground, or Terminal system development or evaluation
Direct experience with DoD Certification & Accreditation (C&A) processes
Space Systems Engineering experience
Why Leidos?
At Leidos, you’ll work alongside experts solving some of the nation’s toughest security challenges. We empower our engineers to lead, innovate, and influence mission outcomes in environments where excellence is not optional — it’s essential.
If you’re ready to bring your expertise to a program where your work truly matters, we’d love to hear from you.
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If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.
February 26, 2026
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.
Pay Range $107,900.00 - $195,050.00
The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.
Leidos is a Fortune 500® innovation company rapidly addressing the world’s most vexing challenges in national security and health. The company's global workforce of 48,000 collaborates to create smarter technology solutions for customers in heavily regulated industries. Headquartered in Reston, Virginia, Leidos reported annual revenues of approximately $15.4 billion for the fiscal year ended December 29, 2023.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead, visit careers.leidos.com for our latest opportunities.
