Updated for 2026

Application Security Engineer
Resume Example

A proven resume structure for application security engineer roles that demonstrates secure code review, vulnerability remediation, and DevSecOps integration expertise.

ATS Score
89
Excellent
Keywords · Impact · Format
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Marcus Lindgren

Austin, TX  |  [email protected]  |  (555) 729-3841  |  linkedin.com/in/marcuslindgren
Summary

Application security engineer with 6 years of experience embedding security into the software development lifecycle across 45+ production applications. Reduced OWASP Top 10 vulnerabilities by 71% through SAST/DAST pipeline integration and trained 120 developers on secure coding practices, cutting post-release security defects by 58%.

Technical Skills
Application Security: secure code review, SAST, DAST, SCA, threat modeling, penetration testing, API security
Tools & Platforms: SonarQube, Checkmarx, Snyk, Burp Suite, OWASP ZAP, GitHub Advanced Security, Veracode
Development & Standards: Python, Java, JavaScript, OWASP Top 10, OWASP ASVS, SANS Top 25, secure SDLC
Experience
Application Security Engineer - Vanguard Software Group
  • Lead application security program for 45+ production applications serving 3.2M users, integrating SAST and DAST scanning into 28 CI/CD pipelines that block 94% of critical findings before deployment
  • Reduced OWASP Top 10 vulnerabilities by 71% across the application portfolio in 18 months through automated scanning gates, developer training, and remediation SLA enforcement
  • Conducted 36 threat models for new feature releases and architectural changes, identifying 82 high-risk attack vectors and driving remediation of 78 before production launch
  • Trained 120 developers across 8 engineering teams on secure coding practices, reducing post-release security defects by 58% and saving an estimated $420K in annual remediation costs
Security Software Engineer - Apex Digital Solutions
  • Performed secure code reviews for 15 Java and Python applications, identifying 240+ vulnerabilities including 18 critical injection flaws and 12 authentication bypasses before production release
  • Implemented SonarQube and Snyk in 14 CI/CD pipelines, reducing mean time to remediate application vulnerabilities from 45 days to 9 days across 6 development teams
  • Built a reusable secure authentication library adopted by 11 internal applications, eliminating 4 recurring vulnerability classes and standardizing session management for 850K users
  • Authored 8 security design patterns and an internal OWASP ASVS compliance guide that became mandatory reference material for 65 developers across the engineering organization
Education
B.S. in Computer Science - University of Texas at Austin
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Why This Resume Works

1
Application Portfolio Scale Shows Program Ownership

Managing security for 45+ applications serving 3.2M users demonstrates program-level responsibility rather than ad-hoc testing, which is what distinguishes engineers from consultants.

2
Developer Training Metrics Show Force Multiplication

Training 120 developers with a 58% defect reduction proves the candidate can scale security beyond their own hands-on work, which is the defining trait of effective AppSec engineers.

3
Pipeline Integration Demonstrates Shift-Left Maturity

Blocking 94% of critical findings before deployment shows mature DevSecOps integration rather than post-deployment firefighting, aligning with how modern AppSec teams operate.

Section-by-Section Breakdown

Summary

Lead with application count and user base to establish scope. Include your OWASP vulnerability reduction percentage and developer training impact to show both technical and cultural contributions.

Skills

List specific scanning tools (SonarQube, Checkmarx, Snyk) and programming languages you review. AppSec roles require both security tool expertise and development language proficiency.

Experience

Quantify vulnerabilities found, pipelines secured, developers trained, and remediation time reductions. AppSec is measured by how effectively you reduce risk across the entire development organization.

Education

Highlight OSCP, GWAPT, or CSSLP certifications. Application security certifications demonstrate hands-on testing capability that degrees alone do not convey.

Key Skills for Application Security Engineer Resumes

Based on analysis of thousands of job postings, these are the most frequently required skills:

Secure Code Review SAST/DAST Software Composition Analysis Threat Modeling OWASP Top 10 API Security Penetration Testing SonarQube Checkmarx Snyk Burp Suite Veracode Secure SDLC CI/CD Security Integration Developer Security Training Python Java

Common Mistakes on Application Security Engineer Resumes

  • No Application or User Count - Without knowing how many applications or users you secured, hiring managers cannot gauge whether your experience matches their organization's scale and complexity.
  • Missing Scanning Tool Names - AppSec roles require specific tool experience. Writing security scanning instead of naming SonarQube, Checkmarx, or Snyk prevents ATS matching on required tool keywords.
  • No Developer Engagement Metrics - Application security is a team sport. Failing to mention training delivered, adoption rates, or developer defect reductions suggests an isolated testing approach.
  • Omitting Remediation Timelines - Finding vulnerabilities is only half the job. Not showing how quickly issues get fixed misses the operational impact that separates effective AppSec from checkbox scanning.
  • Listing Only Testing Without Building - A resume showing only vulnerability discovery without secure libraries, design patterns, or pipeline integrations signals a pentester skill set rather than engineering capability.

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