Updated for 2026

Security Engineer
Resume Example

A proven, ATS-optimized resume structure for AppSec and DevSecOps engineers. Copy it, adapt it, land more interviews.

ATS Score
90
Excellent
Keywords · Impact · Format
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Natasha Volkov

Arlington, VA  |  [email protected]  |  (555) 891-2345  |  linkedin.com/in/natashavolkov
Summary

Security engineer with 7+ years designing and implementing security infrastructure for cloud-native applications, specializing in application security and DevSecOps. Built an AppSec program that reduced critical vulnerabilities by 75% and implemented zero-trust architecture across 500+ microservices.

Technical Skills
Security: Application Security, Penetration Testing, Threat Modeling, Vulnerability Management
DevSecOps: SAST/DAST, Container Security, CI/CD Security, Infrastructure as Code
Cloud: AWS Security Hub, IAM, GuardDuty, Azure Sentinel
Tools: Burp Suite, Splunk, HashiCorp Vault, Terraform, Python
Experience
Senior Security Engineer - CyberShield Technologies
  • Built and scaled the application security program from the ground up, reducing critical vulnerabilities across production services by 75% within 18 months
  • Designed and implemented zero-trust architecture for 500+ microservices using mTLS, service mesh policies, and HashiCorp Vault for secrets management
  • Led incident response for 3 major security events including a supply chain compromise, achieving zero data loss and full remediation within SLA
  • Automated security scanning across 40+ CI/CD pipelines using SAST/DAST tooling, reducing mean time to remediation from 14 days to 5.5 days (60% improvement)
Security Engineer - CloudGuard Inc
  • Conducted vulnerability assessments across 300+ endpoints using Nessus and Burp Suite, triaging and remediating 1,300+ findings per quarter
  • Developed custom security tooling in Python to automate AWS IAM policy audits, identifying 35 over-permissioned roles across 12 accounts
  • Led the SOC 2 Type II audit preparation, coordinating evidence collection across 4 engineering teams and achieving certification with zero major findings
  • Performed threat modeling for 15+ new product features using STRIDE methodology, identifying and mitigating 40+ security risks before production deployment
Education & Certifications
M.S. Cybersecurity - George Mason University
B.S. Computer Science - Virginia Tech
Certifications: CISSP, AWS Certified Security – Specialty
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Why This Resume Works

This resume scores well with ATS systems and security hiring managers because it follows four principles:

1
Vulnerability reduction metrics front and center

75% reduction in critical vulnerabilities, 60% faster remediation - the numbers CISOs care about.

2
Security tools tied to outcomes

Not just "used Burp Suite" but what was found and fixed. Tools are means, outcomes are proof.

3
Compliance and incident response demonstrated

SOC 2 audit, zero data loss incidents - proves you can operate under pressure and within frameworks.

4
Certifications and advanced degree placed prominently

CISSP and AWS Security Specialty are gatekeeper credentials in security engineering roles.

Section-by-Section Breakdown

Summary

Opens with years of experience and two clear specializations: application security and DevSecOps. The 75% vulnerability reduction and 500+ microservices scope immediately signal senior-level impact. Keep it to 2-3 sentences - the summary sells the interview, not the whole story.

Technical Skills

Organized by security domain: core security, DevSecOps, cloud, and tools. This structure helps ATS parsers and hiring managers quickly verify coverage. Including both offensive (Burp Suite, pen testing) and defensive (GuardDuty, Splunk) tools shows range.

Tip: Mirror the exact terms from the job description. If they say "Static Application Security Testing," don't just write "SAST" - include both.

Experience

Use this formula for every bullet point:

[Action verb] + [security initiative] + [tools/methodology] + [measurable risk reduction]

Strong verbs for security: Built, Implemented, Led, Automated, Conducted, Designed, Remediated. Avoid "Assisted with" or "Participated in" - they diminish your ownership.

3-5 bullets per role. Lead with your most impactful security outcomes.

Education & Certifications

Security engineering is one of the most cert-driven fields in tech. CISSP and cloud security specializations belong in a dedicated section, not buried in skills. The M.S. in Cybersecurity adds credibility but experience still matters more - keep education concise.

Pro Tips for Security Engineer Resumes

Tip: Quantify your security impact with vulnerability counts, remediation timelines, and scope (endpoints, services, accounts). "Reduced critical vulns by 75%" beats "improved security posture."

Tip: Include both offensive and defensive experience. Pen testing shows you understand attackers; incident response and automation show you can defend at scale.

Key Skills for Security Engineer Resumes

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

Application Security Penetration Testing CISSP AWS Security Threat Modeling SAST/DAST Zero Trust Python Splunk DevSecOps

How the ATS Score Is Calculated

Keywords (AppSec, SAST/DAST, threat modeling, CISSP) 40% + Security Impact Metrics (vulnerability reduction, remediation time) 25% + Structure & Formatting 35%

Common Mistakes on Security Engineer Resumes

  • No vulnerability reduction metrics - saying you "performed security assessments" without showing what changed is meaningless. Quantify the before and after.
  • Listing tools without security outcomes - "Proficient in Burp Suite and Splunk" tells nothing. "Identified 300+ vulnerabilities using Burp Suite" tells the story.
  • Ignoring compliance frameworks - security engineering happens within SOC 2, NIST, ISO 27001, or PCI-DSS contexts. Show you understand the regulatory landscape.
  • Missing incident response experience - every security engineer handles incidents at some point. If you've led or contributed to IR, it should be on your resume.

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