Join Leidos as a Senior Information Systems Security Engineer

Leidos seeks a Senior Information Systems Security Engineer (ISSE) to join our elite team in Linthicum, MD, delivering Information Assurance (IA) Architecture Analysis and Security Engineering for National Leadership Command Capability. Support critical Nuclear Command, Control, and Communications (NC3), Continuity of Government (COG), and Senior Leader communications in a consultant role providing expert technical guidance.

Primary Responsibilities

• Lead threat-informed cybersecurity products including risk assessments, architecture reviews, and engineering guidance.
• Conduct risk assessments with prioritized mitigations for mission partners.
• Design and implement real-time threat detection, analysis, and mitigation capabilities.
• Evaluate architectures against security requirements, identify gaps, and recommend strategies.
• Research emerging technologies like Zero Trust and Cloud Computing for cybersecurity efficacy.
• Validate system security requirements and establish security designs for complex enclaves.
• Contribute to security planning, risk management, C&A documentation reviews, and awareness.

Required Qualifications

• Bachelor’s in Computer Science/IA-related field + 14 years ISSE experience.
• Active TS/SCI with polygraph; CISSP or CASP+.
• RMF expertise, network/systems security engineering, requirements gap analysis.
• Experience in security monitoring, incident response, NIST/CNSSI/DoD standards.
• Ability to brief senior DoD officials and work independently.

Why Leidos?

At Leidos, we outthink, outbuild, and outpace the status quo. We're recruiting disruptors for high-stakes missions. Enjoy competitive pay ($131,300-$237,350), comprehensive benefits, and impactful work. Active TS/SCI with polygraph required. Apply now for U.S. positions in Linthicum, MD.