Senior Information System Security Engineer; ISSE

Mission

The Digital Sector at Leidos is seeking a dynamic Information Systems Security Engineer (ISSE) to support cloud modernization initiatives for the United States Coast Guard at the Command, Control, Communication, Computer, Cyber, and Intelligence Service Center (C5

ISC) in Alexandria, VA.

This role is part of a high-impact program focused on delivering secure, scalable cloud solutions that enable operational agility and resilience across the USCG enterprise.

• Architect and implement secure cloud infrastructure across AWS and Azure platforms.
• Define and enforce cloud security policies, standards, and automation frameworks.
• Lead threat modeling, risk assessments, and incident response for cloud-native applications and services.
• Integrate security into CI/CD pipelines and Dev Ops workflows.
• Support cloud identity and access management (ICAM), encryption, and key management systems.
• Monitor cloud environments using SIEM, CSPM, CWPP, and other security tools.
• Collaborate with engineering, compliance, and operations teams to ensure secure cloud adoption.
• Stay ahead of emerging cloud threats and recommend proactive mitigation strategies.
• Support cross-functional coordination across engineering, cybersecurity, and program management teams.
• Promote continuous improvement through feedback loops and process refinement.
• Ensure alignment with USCG mission priorities and Leidos delivery standards.

• Bachelor’s degree in a related field (e.g., Computer Science, Information Systems, Business) or equivalent experience.
• 12+ years of experience in information security engineering or Masters with 10+ years of prior relevant experience.
• Deep expertise in AWS and Azure security services and architecture.
• Strong understanding of cloud-native security controls and shared responsibility models.
• Experience with configuration management and orchestration tools (e.g., Terraform, Ansible, Puppet).
• Hands‑on experience with containerization and orchestration (e.g., Docker, Kubernetes).
• Certifications such as CCSP, AWS Certified Security – Specialty, or Azure Security Engineer are required.
• Proven experience supporting ATO upgrade efforts from NIST RMF Rev4 to Rev5, including control family transitions and mapping.
• Develop and maintain SSPs, SARs, POA&Ms, and compliance artifacts.
• Experience supporting continuous ATO (cATO) for federal systems.
• Excellent facilitation, communication, and stakeholder engagement skills.
• Ability to work in a fast‑paced, mission‑driven environment.
• Must be a U.S. Citizen and able to obtain and maintain a Public Trust and a DoD Secret Clearance.

• Familiarity with zero trust principles and secure multi‑cloud strategies.
• Familiarity or experience with UiPath is a plus.
• Experience with compliance frameworks (FedRAMP, SOC 2, HIPAA, PCI‑DSS).
• Experience using automation platforms like Reg Scale for cATO.
• Proficiency in scripting and automation (Python, Bash, Power Shell).
• Prior experience supporting DHS, USCG, or other federal cloud modernization efforts.
• Experience working with technical teams in cloud, cybersecurity, or enterprise IT environments.

• DoD 8570‑I level (IAT II, IAM I, II or III, IASAE I, II or III).
• Security+, CISSP, CASP+ CE, ISSEP or other related certifications.

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.