Senior Information System Security Engineer (ISSE)

Leidos; Alexandria (VA); On-site; USD 131,300 - 237,350; Full time

Benefits offered by this job

Competitive compensation

Health and Wellness programs

Income Protection

Paid Leave and Retirement

Job summary

Leidos in the Alexandria, VA area is seeking an Information Systems Security Engineer to lead secure cloud modernization for the US Coast Guard. You will architect and govern cloud security across AWS and Azure, advancing CI/CD security, IAM, encryption, and incident response to safeguard critical missions.

Work with engineering, compliance, and operations to apply NIST RMF Rev4 to Rev5 transitions, develop SSPs and POA&Ms, and drive cATO readiness for federal systems. A U.S.

Qualifications

• Bachelor’s degree in a related field; 12+ years of security engineering experience or Master’s with 10+ years; Doctorate considered.
• Deep expertise in AWS and Azure security services and architecture.
• Experience with configuration management/orchestration (Terraform, Ansible, Puppet).
• Hands-on containerization/orchestration (Docker, Kubernetes).
• Certifications such as CCSP, AWS Certified Security – Specialty, or Azure Security Engineer are required.
• Experience supporting ATO upgrades from NIST RMF Rev4 to Rev5 and creating SSPs/SARs/POA&Ms.

Responsibilities

• Architect and implement secure cloud infrastructure across AWS and Azure.
• Define and enforce cloud security policies and automation frameworks.
• Lead threat modeling, risk assessments, and incident response for cloud-native apps.
• Integrate security into CI/CD pipelines and DevOps workflows.
• Support cloud IAM, encryption, and key management systems.
• Monitor cloud environments using SIEM, CSPM, CWPP, etc.
• Collaborate with engineering, compliance, and operations teams.
• Stay ahead of emerging cloud threats and mitigation strategies.

Skills

AWS security

Azure security

CI/CD security integration

Container security

CCSP

AWS Security Specialty

Azure Security Engineer

Education

Bachelor’s degree in a related field

Master’s degree preferred

Tools

Terraform

Ansible

Puppet

Docker

Kubernetes

Job description

Description

Join us in transforming how technology serves those who serve.

At Leidos, we deliver solutions – pioneering the future of defense and intelligence technology. Our diverse teams of innovators unite around a singular purpose: empowering our customers to succeed in their critical missions. We believe in leading with integrity, investing in our communities, and building sustainably for tomorrow.

Shape the future of digital defense.

The 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 (USCG) at Command, Control, Communication, Computer, Cyber, and Intelligence Service Center (C5ISC) in the Alexandria, VA area. 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. As the ISSE, you will lead the design, implementation, and governance of cloud security solutions across our enterprise environments, ensuring the confidentiality, integrity, and availability of cloud-hosted assets while enabling secure innovation at scale.

Primary Tasks

• 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 DevOps 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.

Basic Qualifications

• Bachelor’s degree in a related field (e.g., Computer Science, Information Systems, Business).
• 12+ years of experience in information security engineering or Master’s with 10+ years of prior relevant experience. Doctorate in a technical domain also considered.
• 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 required.
• Proven experience supporting ATO upgrade efforts from NIST RMF Rev4 to Rev5, including control family transitions and mapping (e.g., PM, RA, PL, SR families).
• Developed and maintained SSPs, SARs, POA&Ms, and compliance artifacts.
• Updated system documentation and security architecture to Rev5 standards.
• 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.

What Sets You Apart

• 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 RegScale for cATO.
• Proficiency in scripting and automation (Python, Bash, PowerShell).
• Prior experience supporting DHS, USCG, or other federal cloud modernization efforts.
• Experience working with technical teams in cloud, cybersecurity, or enterprise IT environments.

Preferred Certifications

• DoD 8570 Certification compliance related to level of position (e.g., IAT II, IAM I, II or III, IASAE I, II or III).
• Other preferred certifications include Security+, CISSP, CASP+ CE, ISSEP.

Pay Range

Pay Range $131,300.00 – $237,350.00

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025.

Benefits

Competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

Equal Opportunity Employment

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.