Information Assurance Security Engineer

Leidos seeks an Information Assurance Security Engineer to secure mission-critical systems for government and commercial clients. In this role, you will design and implement secure architectures, perform risk assessments, and manage security controls across complex IT and cyber environments. You will ensure compliance with NIST, RMF, and federal cybersecurity standards while supporting ATO efforts and continuous monitoring. Collaborating with cross-functional teams, you will deploy and optimize security tools, respond to incidents, and drive improvements that protect sensitive data and critical infrastructure., * Design and implement secure architectures for mission-critical systems

• Conduct security risk assessments, vulnerability scans, and remediation
• Develop and enforce security policies, standards, and procedures
• Monitor systems for security events and respond to incidents
• Implement and manage security tools (IDS/IPS, SIEM, encryption, IAM)
• Ensure compliance with NIST, RMF, and other federal cybersecurity standards
• Collaborate with engineering and operations teams on secure system design
• Prepare security documentation, ATO packages, and audit evidence
• Support continuous monitoring and configuration management
• Advise stakeholders on security best practices and emerging threats

• Information assurance
• Cybersecurity engineering
• Security architecture design
• NIST and RMF compliance
• Vulnerability assessment and management
• Security incident response
• SIEM and security monitoring tools
• Network and system hardening
• Identity and access management (IAM)
• Security documentation and ATO processes