Senior Cyber Security Engineer – TS/SCI Poly

Leidos; Reston (VA); On-site; USD 131,000 - 237,000; Full time

Job summary

Leidos seeks a Senior Cyber Security Engineer in Reston, VA to join a focused team delivering IA architecture analysis and security engineering for NC3, COG, and senior leader communications. The role involves threat-informed cybersecurity products, risk assessments, and real-time defense capabilities.

You will evaluate architectures, research new technologies, and collaborate with stakeholders to ensure security objectives and validation methods are defined and implemented across multisystem

Qualifications

• Bachelor of Science degree in Computer Science, Information Assurance, Information Security Systems Engineering, or related field.
• Minimum 14 years of experience as ISSE or Systems Engineer on customer contracts.
• CISSP or CASP certification is required.
• Strong writing and briefing skills for senior DoD officials.
• Expertise with RMF and cybersecurity risk assessments.
• Experience with Zero Trust and Cloud Computing; DoD 8500 guidance.

Responsibilities

• Deliver threat-informed cybersecurity products: risk assessments, architecture reviews, and engineering guidance.
• Support design, implementation, and operation of real-time threat discovery and mitigation capabilities.
• Evaluate candidate architectures against security requirements and identify gaps with mitigations.
• Research emerging technologies to improve cybersecurity effectiveness.
• Engage stakeholders to define security objectives and validation methods.
• Develop and integrate IA and security systems for multi-enclave environments.

Skills

Strong writing skills

Briefing to senior DoD officials

Independent work

Education

BS in Computer Science / Information Assurance / Information Security Systems Engineering

Job description

Leidos seeks a Senior Cyber Security Engineer in Reston, VA to join a focused team delivering IA architecture analysis and security engineering for NC3, COG, and senior leader communications. The role involves threat-informed cybersecurity products, risk assessments, and real-time defense capabilities.

You will evaluate architectures, research new technologies, and collaborate with stakeholders to ensure security objectives and validation methods are defined and implemented across multisystem