Application Security Engineer

Description

The Department of Homeland Security (DHS), Customs and Border Protection (CBP) Cyber Security Directorate (CSD) Security Operations Center (SOC) is a US Government program responsible to prevent, identify, contain and eradicate cyber threats to CBP networks through monitoring, intrusion detection and protective security services to CBP information systems including local area networks/wide area networks (LAN/WAN), commercial Internet connection, public facing websites, wireless, mobile/cellular, cloud, security devices, servers and workstations.

The CBPSOC is responsible for the overall security of CBP Enterprise-wide information systems, and collects, investigates, and reports any suspected and confirmed security violations.

Leidos is looking for an Application Security Engineer to support:

• Ensure continuous monitoring of all CSD managed applications and implement an alerting system for critical incidents
• Participate in market research to identify new security solutions as required to avoid obsolescence and to improve the overall security posture
• Develop, deploy, maintain, and/or assist in the implementation and integration of Machine Learning (ML) and Artificial Intelligence (AI) into CBP's security tool suite.
• Integrate security best practices into the software development life cycle (SDLC) and ensure security is embedded from design to deployment.
• Utilize SAST tools to analyze source code for vulnerabilities.
• Work closely with development teams and ISSOs to remediate identified security issues.
• Conduct security assessments using Microfocus Web Inspect and other DAST tools.
• Collaborate with development teams to address and remediate dynamic security findings.
• Implement and manage container security tools, with a focus on Anchore, to ensure secure container deployments.
• Provide recommendations for secure container orchestration.
• Work on ensuring systems and applications comply with Security Technical Implementation Guide
• Establish and maintain the definitive current basis for control and status accounting of application systems and their configuration items.
• Select configuration items at appropriate levels for application products to facilitate documentation, control
• Tune logging capabilities for efficiency, identify shortfalls, and recommend improvements and new technologies for application logging.
• Support the CSD Service Desk in managing and executing the Vulnerability Identification and Remediation process for applications.

• BS degree in Information Technology, Software Engineering, or related field and 8 - 12 years of prior relevant experience
• 3+ years of prior experience in application security with a focus on SAST, SCA, DAST
• Knowledge of secure coding practices and integration into SDLC
• Familiarity with common security frameworks and standards
• Strong programming/scripting skills
• Excellent communication and collaboration skills
• Working in an Agile project management environment
• Must have a Top Secret Clearance with SCI
• Must be able to report into the Ashburn VA office up to 5 days per week.

• Master's with 1-2 years of prior experience in application security with a focus on SAST, SCA, DAST
• Experience with data engineering tools such as Kubernetes/Rancher, Cloudera
• Experience with Configuration Management and IaC tools such as Salt or Ansible
• Experience with scripting languages, CI/CD tools, Elasticsearch, or Gitlab
• Experience working in an air-gapped environments
• Experience working in large computing environments (> 1,000 end-points)

Original Posting:
July 10, 2026

For U.S. Positions:
While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range $ - $

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as…