Leidos is hiring: Information Systems Security Engineer in Cardiff

Leidos is seeking an Information System Security Engineer to support mission-critical programs across national security, health, and engineering. In this role, you will help design, implement, and assess security controls that protect information systems and sensitive data. You’ll work collaboratively with engineering, IT, and program teams to identify risks, address vulnerabilities, maintain security documentation, and support system authorization. The ideal candidate brings practical cybersecurity experience, knowledge of government security standards, and a commitment to integrity and continuous learning. Join a mission-driven team delivering impactful technology solutions, with competitive pay, robust benefits, professional development, and flexible work options. Design, implement, and assess security controls for information systems. Identify risks and vulnerabilities and recommend mitigation strategies. Support system authorization and security assessment activities. Develop and maintain system security plans and related documentation. Collaborate with engineering, IT, and program teams to protect sensitive data. Help ensure compliance with applicable government security standards and requirements. Information system security engineering Risk assessment and management Security control implementation NIST Risk Management Framework (RMF) NIST security standards System security plans Vulnerability assessment Security authorization and accreditation Incident response Technical documentation Medical Insurance Dental Insurance Vision Insurance Life Insurance 401k Relevant cybersecurity certifications such as CISSP, Security, or CISM are preferred; equivalent experience may be considered.