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Application Security Engineer

Job in Ashburn, Loudoun County, Virginia, 22093, USA
Listing for: Leidos
Full Time position
Listed on 2026-10-29
Job specializations:
  • IT/Tech
    Cybersecurity, IT Consultant, Systems Engineer
Job Description & How to Apply Below
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 CBP SOC is responsible for the overall security of CBP Enterprise-wide information systems, and collects, investigates, and reports any suspected and confirmed security violations. Primary Responsibilities Leidos is looking for an Application Security Engineer to support:
Application Security Operations and Maintenance, Application Security Configuration Management and Application Security Logging and Vulnerability Management :

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.

Basic QualificationsBS degree in Information Technology, Software Engineering, or related field and 8 – 12 years of prior relevant experience3+ years of prior experience in application security with a focus on SAST, SCA, DASTKnowledge of secure coding practices and integration into SDLCFamiliarity 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 SCIMust be able to report into the Ashburn VA office up to 5 days per week.

Preferred Qualifications Master’s with 1-2 years of prior experience in application security with a focus on SAST, SCA, DASTExperience 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) If you're looking for comfort, keep…
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