Cybersecurity Systems Engineer

Leidos LLC; Linthicum (MD); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Health and Wellness programs

Income Protection

Paid Leave

Retirement

Job summary

Leidos is seeking a Cybersecurity Systems Engineer to support a complex Information Assurance program. You will help ensure security, performance, and compliance for mission-critical systems, influencing design and risk reduction.

Requirements include 8+ years in Systems Engineering, a related bachelor’s degree (or equivalent experience), expertise in IA/cryptographic systems, and an active TS/SCI with polygraph. DoD C&A experience and space systems exposure are highly valued.

Qualifications

• Bachelor’s degree in a related field or five extra years of systems engineering experience.
• 8+ years of Systems Engineering experience with IA/cryptographic focus.
• Strong written and verbal communication skills.
• Experience leading small technical teams.
• Active TS/SCI with Polygraph clearance.
• Direct DoD C&A experience and space systems exposure.

Responsibilities

• Contribute to development and evaluation of systems engineering docs.
• Provide technical leadership across development, integration and testing.
• Lead requirements elicitation, analysis, and allocation.
• Conduct systems requirements reviews and assessments.
• Support planning and test analysis for DoD C&A processes.
• Perform high-assurance cybersecurity evaluation during certification.
• Review security artifacts for compliance with requirements.
• Document deficiencies and provide actionable mitigation guidance.
• Translate vulnerability insights into practical risk guidance.
• Collaborate across teams in security-focused reviews.

Skills

Systems Engineering

Information Assurance

Cryptographic systems

Written and verbal communication

Team leadership

TS/SCI clearance

Education

Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or related field

Job description

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

• 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.

Pay Range

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.

Pay and Benefits

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available here.

Secure your Data

Leidos will never ask you to provide payment‑related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment‑related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law.

Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

About Leidos

Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.