Application Security Engineer

Leidos Holding$107K — $195K *
Information Technology
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • BS degree in Information Technology, Software Engineering, or similar with 8-12 years of experience.
  • 3+ years in application security centered on SAST, SCA, DAST.
  • Knowledge of secure coding practices integrated into SDLC.
  • Familiarity with established security frameworks and standards.
  • Strong programming and scripting skills.
  • Excellent communication and collaboration capabilities.
  • Agile project management experience.
  • Top Secret Clearance with SCI necessary; daily office presence in Ashburn, VA required.

Responsibilities

  • Monitor all CSD managed applications and implement critical incident alerting.
  • Conduct market research for new security solutions to enhance security measures.
  • Develop and integrate ML and AI into the security tool suite.
  • Embed security best practices throughout the SDLC process.
  • Utilize SAST tools for source code vulnerability analysis.
  • Collaborate with development teams to remediate security issues.
  • Execute security assessments using DAST tools like Microfocus WebInspect.
  • Manage container security tools and provide secure orchestration recommendations.

Benefits

  • Opportunity to work in a pivotal role in national cybersecurity efforts.
  • Engagement with cutting-edge security technologies, including AI and ML.
  • Collaborative work environment with opportunities for professional growth.
  • Involvement in a mission-driven government initiative with broad impact.
  • Potential to advance within a reputable government contracting organization.
Full Job 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 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 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 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 Qualifications
  • 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.


Preferred Qualifications

  • 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:
Pay Range $107,900.00 - $195,050.00

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 well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

About Leidos Holding

Leidos Holding Careers

Joining Leidos Holding presents an unparalleled opportunity to advance one's career with a leader in innovation and technology. The company offers a plethora of job opportunities aimed at fostering professional growth and development in a diverse and inclusive environment.

Explore Career Opportunities

Leidos Holding is actively seeking skilled professionals who are passionate about leveraging their expertise to drive innovation and leadership in their fields. With a variety of open positions, Leidos Holding provides a platform for individuals to challenge themselves in a dynamic work environment.

Innovation and Professional Growth

At Leidos Holding, innovation is at the core of everything they do. Employees are encouraged to think creatively and push boundaries. The company supports this drive for innovation through comprehensive professional development and diversity training programs that are designed to enhance skills and foster leadership.

Commitment to Diversity and Inclusion

Leidos Holding is committed to creating a workplace where diversity is not only recognized but celebrated. With a culture that values and promotes diversity, Leidos Holding ensures that all team members have the opportunity to contribute, learn, and grow.

Internship Programs

For those starting their career, Leidos Holding offers internship programs that provide a robust foundation in the industry. Internships are a great way to develop essential skills, gain valuable work experience, and build professional networks.

Benefits and Culture

Employees at Leidos Holding enjoy a range of benefits designed to support their professional and personal lives. The company culture is built on a foundation of respect and integrity, providing a supportive and collaborative environment where every team member is valued.

Join the Team

Leidos Holding is hiring! Explore job opportunities that match your skills and interests. Leidos Holding looks for driven, curious, and innovative individuals to join their team. Positions are available across various disciplines and experience levels.

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Prepare for Your Interview

To prepare for an interview at Leidos Holding, candidates should familiarize themselves with the company's missions and values, update their resumes, and be ready to discuss how their background and skills align with the position they are applying for.

Networking and Career Advancement

Leidos Holding encourages its employees to engage in networking within the company to discover new opportunities for career advancement. The leadership team at Leidos Holding is dedicated to supporting employees in their career paths with ample opportunities for networking and growth.

Explore Leidos Holding Jobs and Careers

Discover the exciting career opportunities at Leidos Holding today. With a commitment to employee growth, innovation, and diversity, Leidos Holding is the perfect place to advance your career. Check out the latest job listings and find your perfect fit at Leidos Holding.

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