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Alex 'Cipher' Mercer
Senior Cybersecurity Engineer & Penetration Tester
Professional Summary
Results-driven Offensive Security Professional with 6+ years of experience conducting red team operations, web/API penetration testing, and cloud infrastructure audits. Discovered 18+ high-severity vulnerabilities across Fortune 500 applications. Proficient in Python, Go, Burp Suite Pro, and cloud security architectures.
Professional Experience
- Led 40+ full-scope penetration tests across AWS/Azure cloud environments, fintech APIs, and web apps.
- Engineered automated reconnaissance workflows using Python and Nuclei, reducing manual triage time by 35%.
- Presented risk assessments and executive summaries directly to C-suite and engineering leadership.
- Authored remediation guidelines for OWASP Top 10 vulnerabilities, improving developer fix rate by 60%.
- Monitored and triaged 200+ daily alerts across SIEM (Splunk) and endpoint detection (CrowdStrike).
- Automated repetitive threat intelligence correlation pipelines using Bash and Python scripts.
- Conducted forensic log analysis for 5 major incident response drills with zero data exfiltration.
Technical & Professional Skills
Key Engineering Projects
Open-source OSINT CLI tool that automates subdomain discovery, DNS brute-forcing, and exposed git credential detection. Starred by 1.2k+ GitHub researchers.
Tech Stack: Go • Docker • Goroutines • REST APIs
Automated policy evaluation engine identifying overprivileged roles and dangling permissions across multi-account AWS organizations.
Tech Stack: Python • Boto3 • AWS IAM • JSON Schema
Education
Certifications & Accreditations
Personal Contact Information
These primary identifiers appear in your resume header.
Alex 'Cipher' Mercer
Senior Cybersecurity Engineer & Penetration Tester
Professional Summary
Results-driven Offensive Security Professional with 6+ years of experience conducting red team operations, web/API penetration testing, and cloud infrastructure audits. Discovered 18+ high-severity vulnerabilities across Fortune 500 applications. Proficient in Python, Go, Burp Suite Pro, and cloud security architectures.
Professional Experience
- Led 40+ full-scope penetration tests across AWS/Azure cloud environments, fintech APIs, and web apps.
- Engineered automated reconnaissance workflows using Python and Nuclei, reducing manual triage time by 35%.
- Presented risk assessments and executive summaries directly to C-suite and engineering leadership.
- Authored remediation guidelines for OWASP Top 10 vulnerabilities, improving developer fix rate by 60%.
- Monitored and triaged 200+ daily alerts across SIEM (Splunk) and endpoint detection (CrowdStrike).
- Automated repetitive threat intelligence correlation pipelines using Bash and Python scripts.
- Conducted forensic log analysis for 5 major incident response drills with zero data exfiltration.
Technical & Professional Skills
Key Engineering Projects
Open-source OSINT CLI tool that automates subdomain discovery, DNS brute-forcing, and exposed git credential detection. Starred by 1.2k+ GitHub researchers.
Tech Stack: Go • Docker • Goroutines • REST APIs
Automated policy evaluation engine identifying overprivileged roles and dangling permissions across multi-account AWS organizations.
Tech Stack: Python • Boto3 • AWS IAM • JSON Schema