Cybersecurity Jobs in Lorton, VA

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Senior Cybersecurity Architect

Leidos Lorton, VA

Lorton, VA

Today

$131k - $237k/yr Full time Cloud Cloud Architecture Cloud Platforms

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Job Description

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.

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