Senior Cybersecurity Architect

As a Senior Cybersecurity Architect at Leidos, you will support a DoD/Air Force program, leading cybersecurity engineering and architecture across on-prem and cloud environments with emphasis on zero-trust, policy-as-code, and accreditation processes.

Compensation: USD 131,300 - 237,350 per year.

Responsibilities

• Develop and implement enterprise-wide cybersecurity strategies aligned with DoD and federal security standards.
• Ensure technology selections and architectural designs are resilient against modern cyber threats.
• Design and deploy secure cloud infrastructure across platforms.
• Define and enforce cloud security policies, standards, and automation frameworks.
• Support timely completion of Authorization to Operate activities across multiple environments with varying classification levels.
• Integrate security into CI/CD pipelines and DevOps workflows.
• Support cloud identity and access management, encryption, and key management systems.
• Configure, tune, and monitor enterprise security tools.
• Monitor network and system security to identify and respond to vulnerabilities and incidents.
• Perform risk assessments and develop mitigation strategies for identified risks.
• Collaborate with IT teams to embed security measures into all infrastructure projects.
• Develop and implement security policies, standards, and procedures to safeguard sensitive information.
• Provide technical guidance on cybersecurity tools and technologies.
• Stay current on emerging threats and industry trends to strengthen the organization’s security posture.
• Develop and refine documentation to attain and maintain DoD accreditation for program systems.
• Participate in the Change Control Board process to support major engineering milestones and decisions.

Requirements

• Bachelor’s degree with 12+ years of experience, or Master’s degree with 10+ years of experience; equivalent industry experience will be considered in lieu of education.
• U.S. citizen with an active Top Secret clearance and the ability to obtain and maintain an SCI prior to start date.
• Proven experience in cybersecurity engineering or related roles.
• Hands-on experience configuring enterprise cybersecurity tools, with emphasis on Splunk (Enterprise Security, SOAR, UBA), HBSS/ESS (Trellix ePO), ACAS (Tenable/Nessus), and SolarWinds Observability.
• Familiarity with DoD cybersecurity frameworks such as Risk Management Framework (RMF).
• Strong knowledge of network security, firewalls, intrusion detection/prevention systems, and encryption technologies.
• Excellent problem-solving skills and attention to detail.
• Strong communication skills for collaboration with technical and non-technical stakeholders.
• DoD 8140 advanced certifications (CISM, CISSP, ISSAP).

Technologies

• Splunk (Enterprise Security, SOAR, UBA)
• HBSS/ESS (Trellix ePO)
• ACAS (Tenable/Nessus)
• SolarWinds Observability

Benefits

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

Why this role matters

Security and compliance in defense-sector classified networks have long lived in a structural paradox: the processes designed to protect mission software are the same processes that slow it down. Manual authorization cycles. Point-in-time snapshots. Documentation that proves intent but not execution. Every program team re-solves the same compliance problems. Every platform that wants to help them has to run the gauntlet first.