Application Security Engineer

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 ResponsibilitiesLeidos 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 incidentsParticipate in market research to identify new security solutions as required to avoid obsolescence and to improve the overall security postureDevelop, 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 WebInspect 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 GuideEstablish 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, controlTune 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 standardsStrong programming/scripting skillsExcellent communication and collaboration skillsWorking in an Agile project management environmentMust have a Top Secret Clearance with SCIMust be able to report into the Ashburn VA office up to 5 days per week.Preferred QualificationsMaster'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, ClouderaExperience with Configuration Management and IaC tools such as Salt or AnsibleExperience with scripting languages, CI/CD tools, Elasticsearch, or GitlabExperience working in an air-gapped environmentsExperience working in large computing environments (> 1,000 end-points) If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 — and moving faster than anyone else dares.Original Posting:July 13, 2026For 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:Pay Range $107,900.00 - $195,050.00The 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 well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.SummaryLocation: Ashburn, VAType: Full time