ISSE SME - Secure Systems & DevSecOps Expert

Leidos; McLean (VA); On-site; USD 154,000 - 278,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% company match

Flexible Schedules

Discounted Stock Purchase Plans

Technical Upskilling

Education and Training Support

Parental Paid Leave

Job summary

Leidos is seeking an Information Systems Security Engineer (ISSE) SME to design, implement, and sustain secure information systems supporting mission operations. You will collaborate with ISSMs, developers, and government stakeholders to embed security controls and ensure resilience against evolving threats.

You will install, configure, and maintain security tools, perform vulnerability assessments, and ensure proper integration into DevSecOps pipelines for continuous security testing and

Qualifications

• MS degree and 15+ years of relevant experience.
• Active TS/SCI with a Polygraph.
• Experience conducting routine vulnerability scanning and remediation.
• Experience reviewing security bulletins, threat intelligence, and advisories.
• Experience monitoring systems with SIEM.
• Investigating and responding to cyber security incidents.
• Experience CVEs mapping to controls and remediation.
• Auditing systems for secure configurations and baselines.
• Experience using at least two vulnerability scanning tools.

Responsibilities

• Applying system security engineering principles across design and operations.
• Conducting cybersecurity assessments and audits.
• Coordinating with cybersecurity staff to mitigate risk.
• Identifying vulnerabilities and non-compliance with standards.
• Performing vulnerability scans and reporting remediation progress.
• Working with DevSecOps to remediate findings.
• Installing and maintaining security tools within CI/CD pipelines.
• Supporting RMF/ATO activities and POAM tracking.

Skills

Vulnerability assessment

SIEM monitoring

Incident response

CVEs tracking

Security auditing

DevSecOps

Secure configuration

Education

MS degree

15+ years of experience

Tools

AWS Inspector

Tenable/Nexpose

SonarQube

Fortify

OWASP tools

Job description

Leidos is seeking an Information Systems Security Engineer (ISSE) SME to design, implement, and sustain secure information systems supporting mission operations. You will collaborate with ISSMs, developers, and government stakeholders to embed security controls and ensure resilience against evolving threats.

You will install, configure, and maintain security tools, perform vulnerability assessments, and ensure proper integration into DevSecOps pipelines for continuous security testing and