The main focus of my profile is on Web Application Security and Penetration Testing. I specialize in identifying and mitigating vulnerabilities in we
Aktualisiert am 24.06.2025
Profil
Freiberufler / Selbstständiger
Remote-Arbeit
Verfügbar ab: 24.06.2025
Verfügbar zu: 100%
davon vor Ort: 100%
Web Application Penetration TestinOWASP, API Security
Cloud Architect
IT-Security
Hacker
English
Muttersprache
German
Verhandlungssicher

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2021 ? today: Led web and mobile application security assessments for enterprise clients across Europe


Role: Senior Pentester

Customer: CyberGuard Solutions GmbH, Berlin, Germany


Tasks:

  • Led web and mobile application security assessments for enterprise clients across Europe
  • Delivered pentest reports aligned with OWASP, including detailed risk analysis and mitigation
  • Conducted client kickoffs, internal syncs, QA reviews, and report walkthroughs
  • Frequently worked in collaboration with TÜVIT and other certification bodies
2017 ? 2021: Conducted internal and external penetration testing engagements


Role: Penetration Tester

Customer: RedFox Security Consulting, Hamburg, Germany


Tasks:

  • Conducted internal and external penetration testing engagements
  • Analyzed API traffic and tested mobile apps for authentication, session handling, and data leakage vulnerabilities
  • Implemented continuous security testing workflows in CI/CD pipelines

2014 ? 2017: Supported clients by identifying web and system-level vulnerabilities


Role: Security Analyst

Customer: NetShield Technologies, Remote


Tasks:

  • Supported clients by identifying web and system-level vulnerabilities
  • Delivered detailed security assessments and advisory documentation
  • Trained client development teams on secure coding and threat modeling

Aus- und Weiterbildung

Aus- und Weiterbildung

2010 ? 2013

B.Sc. in Computer Science | University of Bonn


Certifications:

  • OSCP ? Offensive Security Certified Professional
  • CEH ? Certified Ethical Hacker
  • eWPT ? eLearnSecurity Web Application Penetration Tester

Kompetenzen

Kompetenzen

Top-Skills

Web Application Penetration TestinOWASP, API Security Cloud Architect IT-Security Hacker

Produkte / Standards / Erfahrungen / Methoden

Professional Summary:
Cybersecurity professional with over 10 years of hands-on experience in penetration testing, vulnerability assessment, and secure software development lifecycle. Proven ability to lead and execute web and mobile application security assessments in line with OWASP and industry best practices.


Technical Skills:

  • Web Application Penetration Testing
  • Mobile App Security (iOS & Android)
  • API Security & Testing
  • Network and System Penetration Testing
  • OWASP Top 10, SANS 25, PTES, NIST
  • Tools: Burp Suite, OWASP ZAP, Wireshark, Metasploit, Kali Linux, Nessus
  • Programming: Python, Bash, JavaScript

Einsatzorte

Einsatzorte

Deutschland, Schweiz, Österreich
möglich

Projekte

Projekte

2021 ? today: Led web and mobile application security assessments for enterprise clients across Europe


Role: Senior Pentester

Customer: CyberGuard Solutions GmbH, Berlin, Germany


Tasks:

  • Led web and mobile application security assessments for enterprise clients across Europe
  • Delivered pentest reports aligned with OWASP, including detailed risk analysis and mitigation
  • Conducted client kickoffs, internal syncs, QA reviews, and report walkthroughs
  • Frequently worked in collaboration with TÜVIT and other certification bodies
2017 ? 2021: Conducted internal and external penetration testing engagements


Role: Penetration Tester

Customer: RedFox Security Consulting, Hamburg, Germany


Tasks:

  • Conducted internal and external penetration testing engagements
  • Analyzed API traffic and tested mobile apps for authentication, session handling, and data leakage vulnerabilities
  • Implemented continuous security testing workflows in CI/CD pipelines

2014 ? 2017: Supported clients by identifying web and system-level vulnerabilities


Role: Security Analyst

Customer: NetShield Technologies, Remote


Tasks:

  • Supported clients by identifying web and system-level vulnerabilities
  • Delivered detailed security assessments and advisory documentation
  • Trained client development teams on secure coding and threat modeling

Aus- und Weiterbildung

Aus- und Weiterbildung

2010 ? 2013

B.Sc. in Computer Science | University of Bonn


Certifications:

  • OSCP ? Offensive Security Certified Professional
  • CEH ? Certified Ethical Hacker
  • eWPT ? eLearnSecurity Web Application Penetration Tester

Kompetenzen

Kompetenzen

Top-Skills

Web Application Penetration TestinOWASP, API Security Cloud Architect IT-Security Hacker

Produkte / Standards / Erfahrungen / Methoden

Professional Summary:
Cybersecurity professional with over 10 years of hands-on experience in penetration testing, vulnerability assessment, and secure software development lifecycle. Proven ability to lead and execute web and mobile application security assessments in line with OWASP and industry best practices.


Technical Skills:

  • Web Application Penetration Testing
  • Mobile App Security (iOS & Android)
  • API Security & Testing
  • Network and System Penetration Testing
  • OWASP Top 10, SANS 25, PTES, NIST
  • Tools: Burp Suite, OWASP ZAP, Wireshark, Metasploit, Kali Linux, Nessus
  • Programming: Python, Bash, JavaScript

Vertrauen Sie auf Randstad

Im Bereich Freelancing
Im Bereich Arbeitnehmerüberlassung / Personalvermittlung

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