Updated for 2026

Junior Security Engineer
Resume Example

A proven resume structure for entry-level security engineering roles that highlights vulnerability scanning, security monitoring, and foundational compliance knowledge.

ATS Score
86
Excellent
Keywords · Impact · Format
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Keiko Tanaka

San Jose, CA  |  [email protected]  |  (555) 408-3627  |  linkedin.com/in/keikotanaka
Summary

Security engineer with 1.5 years of experience in vulnerability management, security monitoring, and incident triage across cloud and on-premise environments. Identified 280+ vulnerabilities through automated and manual scanning, contributing to a 45% reduction in critical security findings. CompTIA Security+ and AWS Cloud Practitioner certified with hands-on experience in SIEM operations and endpoint protection.

Technical Skills
Security Tools: Splunk, Nessus, Burp Suite, CrowdStrike Falcon, Snort, OWASP ZAP
Cloud & Infrastructure: AWS (IAM, CloudTrail, Security Groups), Linux, Windows Server, TCP/IP, DNS, firewall rules
Frameworks & Practices: NIST 800-53, OWASP Top 10, MITRE ATT&CK, vulnerability scanning, incident triage, log analysis, Python scripting
Experience
Junior Security Engineer - ShieldPoint Technologies
  • Conducted vulnerability scans using Nessus across 380 endpoints and 22 servers, identifying 280+ vulnerabilities and coordinating remediation that reduced critical findings by 45%
  • Monitored Splunk SIEM processing 1.8M daily events, triaging an average of 38 security alerts per day with 95% classification accuracy
  • Developed 8 Python scripts automating security log analysis and IOC extraction, reducing manual investigation time from 3 hours to 25 minutes per incident
  • Assisted in incident response for 14 security events including 3 phishing campaigns, containing all incidents within 2-hour SLA with zero data compromise
Security Operations Intern - Nextera Defense
  • Performed 12 web application security assessments using Burp Suite and OWASP ZAP, identifying 45 vulnerabilities including 6 critical XSS and SQL injection findings
  • Configured firewall rules and security groups for 15 AWS environments, blocking 1,800+ malicious IP addresses identified through threat intelligence feeds
  • Created 6 incident response runbooks documenting detection-to-containment procedures, adopted by a team of 8 SOC analysts and reducing average response time by 30%
  • Reviewed AWS CloudTrail logs for 9 accounts, identifying 4 unauthorized IAM policy changes and escalating within 20 minutes of detection
Education
B.S. in Computer Science - San Jose State University
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Why This Resume Works

1
Vulnerability Metrics Prove Impact

Identifying 280+ vulnerabilities with a 45% reduction in critical findings demonstrates measurable security improvement, even at the junior level.

2
Automation Skills Stand Out

Python scripts reducing investigation time from 3 hours to 25 minutes shows engineering-minded problem-solving that separates security engineers from SOC analysts.

3
Framework Knowledge Signals Maturity

Referencing NIST 800-53, OWASP Top 10, and MITRE ATT&CK demonstrates foundational security knowledge that teams expect junior engineers to build upon.

Section-by-Section Breakdown

Summary

Lead with vulnerability count and key certifications (Security+, CEH). Include your SIEM event volume and classification accuracy to show operational capability.

Skills

List specific tools (Nessus, Burp Suite, Splunk) rather than categories. ATS systems scan for exact product names when filtering security engineer candidates.

Experience

Focus on vulnerabilities found, alerts triaged, incidents handled, and automation built. These metrics directly map to what security engineering teams measure.

Education

List certifications prominently. CompTIA Security+, CySA+, or AWS Security Specialty carry significant weight for junior security roles and are actively searched by ATS systems.

Key Skills for Junior Security Engineer Resumes

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

Vulnerability Scanning (Nessus) SIEM Monitoring (Splunk) Incident Triage Penetration Testing Basics AWS Security Firewall Configuration Python Scripting OWASP Top 10 MITRE ATT&CK Log Analysis Endpoint Protection Network Security Linux Administration Threat Intelligence Security Automation

Common Mistakes on Junior Security Engineer Resumes

  • Only Listing Monitoring Experience - Security engineering requires more than watching dashboards. Not showing any vulnerability scanning, scripting, or remediation coordination suggests you are a SOC analyst, not an engineer.
  • No Scripting or Automation - The 'engineer' in security engineer implies building and automating. Not mentioning Python, Bash, or any automation work positions you as an operator rather than a builder.
  • Missing Certifications - In security, certifications are entry tickets. Not listing CompTIA Security+, CEH, or equivalent certifications can get your resume filtered out before a human sees it.
  • Vague Incident Descriptions - Writing 'assisted with incidents' without specifying the type, your role, the timeline, and the outcome makes it impossible to evaluate your incident response capability.
  • Ignoring Cloud Security - Most modern security roles involve cloud infrastructure. Not mentioning any AWS, Azure, or GCP security experience limits your candidacy as organizations continue cloud migration.

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