Application Security Engineer

CACI • O'fallon, IL

7d • Hybrid

About The Position

Join a mission‑driven cybersecurity team securing applications that support a critical DoD mission. In this role, you’ll embed security directly into the software development lifecycle, partner with developers and architects, and use industry‑leading tools to identify, validate, and remediate vulnerabilities across a diverse application ecosystem.

Requirements

• Active Secret or TS clearance
• 3–5 years of experience in application security, secure development, or penetration testing
• Hands‑on experience with SAST platforms (Fortify preferred)
• Working knowledge of OWASP Top 10 and common application vulnerability classes
• Demonstrated experience conducting or supporting penetration tests
• DoD 8140.03M DCWF Basic Tier — CEH
• DoD 8140 Interim
• Required to travel to Scott Airforce base on a quarterly basis

Nice To Haves

• DoD 8140.03M DCWF Intermediate Tier — one of: CEH(P), RCCE Level 1, Cloud+, CPTE, FITSP‑A, GCED, GCIH, GCSA, GICSP, GSEC, PenTest+, or Security+
• Bachelor’s degree in Computer Science, Cybersecurity, Data Science, Information Systems, IT, or Software Engineering
• Experience with SonarQube or similar secure code analysis platforms
• Familiarity with DevSecOps pipelines and CI/CD security integration
• Scripting or development experience in Python, Java, or similar languages

Responsibilities

• Perform SAST using Fortify across assigned applications
• Conduct continuous code quality and security analysis using SonarQube
• Execute DAST to identify runtime vulnerabilities
• Coordinate and execute penetration testing engagements
• Conduct secure code reviews and document findings with actionable guidance
• Track and verify vulnerability remediation through closure
• Validate application security controls against program and DoD requirements
• Author application security assessment and penetration test reports
• Support the Cybersecurity Architect with secure SDLC process design

Benefits

• healthcare
• wellness
• financial
• retirement
• family support
• continuing education
• time off benefits
• flexible time off benefit
• robust learning resources

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level