Application Security Engineer Job at Leidos – Secure Software Dev

Leidos is seeking an Application Security Engineer as part of our DevOps team in support of a large-scale, complex Software program within the Department of Justice.

This role focuses on securing the application including identifying vulnerabilities in code, designing security controls, conducting code reviews and perform penetration tests, with the goal of proactively preventing security breaches by inserting security measures throughout the software development lifecycle.

Lead security integration efforts across the software development lifecycle.

Manage and maintain a library of security audit tools, and corresponding processes that can be used for system security testing, internal audits, incident response, and diagnosis of security-related system issues.

Identify vulnerabilities in code and work with developers to remediate them.

Automate security testing in CI/CD pipelines.

Conduct advanced threat modeling and oversee secure architectural choices.

Manage security incident response and remediation efforts.

Mentor developers on secure coding practices and conduct training sessions.

Track and report progress on security vulnerabilities in formal reviews.

Establish container security standards.

Collect compliance evidence in support of reviews and audits.

Bachelor's degree in Cybersecurity, Computer Science, or related field with 8 years of experience 5+ years of experience in application security engineering.

Expertise in security tools, security controls and frameworks, and incident response.

Experience with scripting languages, Javascript, Angular and CI/CD tools.

Experience with application development.

Experience with compliance evidence collection and risk-based release gating.

Familiarity with container security standards and IAM governance.

Knowledge of security scanning integration and vulnerability management.

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.

April 27, 2026 For U.S.

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 $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.