Verified Career & Academic Ledger

Professional Timeline & Industry Recognitions

Connecting over eight years of foundational enterprise IT systems administration with senior offensive security consulting, vulnerability research, and cybersecurity company leadership.

Employment & Consulting History

Verified Leadership & Technical Roles

Chronological progression separating corporate leadership, independent senior penetration testing, and foundational enterprise IT operations.

Leadership & Consulting

August 2021 – Present • Istanbul, Türkiye

Co-Founder & Executive Leadership (Ortak Şirket Sahibi / CEO)

MetaGuard

Co-founded MetaGuard, leading cybersecurity strategy, offensive security assessment methodologies, and blockchain network security initiatives while advising organizations on practical technical risk reduction.

Directs offensive security testing standards across web applications, APIs, mobile platforms, enterprise networks, and Active Directory environments.
Translates complex technical vulnerability chains into board-level risk prioritization and actionable engineering remediation roadmaps.
Integrates blockchain security advisory and threat modeling for modern distributed architectures.

Verified via supplied CV ('Ortak Şirket Sahibi, MetaGuard, 08/2021, Istanbul') and public business coverage. Presented as executive and technical leadership experience.

Leadership & Consulting

2021 – Present • Türkiye — Remote Worldwide

Independent Cybersecurity Consultant & Senior Penetration Tester

Independent Consulting & Vulnerability Research

Delivers specialized manual penetration testing, red team attack-path validation, and independent vulnerability research for organizations requiring senior practitioner execution.

Discovered and responsibly disclosed 3 MITRE/NVD-tracked SQL injection vulnerabilities (CVE-2022-27927, CVE-2022-28079, CVE-2022-28080).
Acknowledged in NASA's Vulnerability Disclosure Program (VDP) Hall of Fame (November 2024).
Earned 12 industry credentials including LPT (Master), CPENT, eWPTX, eMAPT, CMSE, CRTP, eCPPTv2, and Associate C|CISO.
Conducts security assessments aligned with OWASP (WSTG, ASVS, MASVS), PTES, NIST SP 800-115, and Turkish Standards Institution (TSE) Senior Penetration Testing Specialist criteria.

Verified via erengozaydin.com, supplied CV, NVD/MITRE records, and issuer verification portals.

Enterprise IT Foundation

February 2005 – May 2013 • Türkiye

IT & Information Systems Administration (Bilgi İşlem ve Sistem Yöneticiliği)

Trexta

Over eight years managing enterprise IT infrastructure, systems administration, network operations, and internal technical support prior to specializing in offensive security.

Administered production server infrastructure, directory services, and enterprise network connectivity across multi-year operational lifecycles.
Developed deep familiarity with system configuration management, operational uptime constraints, and enterprise defense challenges from the defender's seat.
Provides the practical systems engineering foundation that informs production-safe penetration testing and realistic remediation advice today.

Verified via supplied CV ('IT, Trexta, 02/2005 – 05/2013, Bilgi İşlem ve Sistem Yöneticiliği').

Honors & Appointments

Global Rankings, Standards Designations & Mentorship

Independent industry acknowledgments verifying practical capability and professional standing.

National Aeronautics and Space Administration (NASA)November 2024

NASA Vulnerability Disclosure Program (VDP) Hall of Fame

Recognized for independently identifying and responsibly reporting security vulnerabilities under NASA's Vulnerability Disclosure Policy.

Source: erengozaydin.com

EC-CouncilJanuary 2022

Ranked #5 Worldwide — Global Ethical Hacker Leaderboard

Achieved 5th place globally on EC-Council's Global Ethical Hacker Leadership ranking based on practical cyber range performance and technical skill.

Source: erengozaydin.com & National Media Records (Para Dergisi, Haber7)

Turkish Standards Institution (Türk Standardları Enstitüsü - TSE)Active Designation

TSE Senior Penetration Testing Specialist (TSE Kıdemli Sızma Testi Uzmanı)

Qualified to conduct penetration testing assessments in accordance with criteria established by the Turkish Standards Institution.

Source: Supplied CV Profile Record

EC-CouncilActive Role

EC-Council Cybersecurity Career Mentor

Provides professional mentorship and career guidance to emerging cybersecurity practitioners within the EC-Council global community.

Source: Supplied CV & erengozaydin.com

Academic Credentials

University Education

Formal university studies in both software/computer programming and business management.

Anadolu University (Anadolu Üniversitesi)January 2010 – December 2014

Bachelor's Study in Business and Management (İşletme ve Yönetim, Genel)

Academic foundation in business administration, organizational governance, financial decision-making, and strategic management—enabling fluent communication with executive stakeholders.

Supports executive risk translation, compliance alignment, and business-impact prioritization during consulting engagements.

Mersin University (Mersin Üniversitesi)January 2005 – December 2009

Computer Technologies and Programming (Bilgisayar Teknolojileri ve Programlama)

Technical foundation in software development, relational databases, computer architecture, and network systems programming.

Underpins manual source-code analysis, SQL query structure auditing, binary reverse engineering, and custom exploit scripting.

Engagement Scoping

Discuss Your Security Testing Requirements

Tell me what you need assessed—whether a multi-tenant web application, REST/GraphQL API, Android/iOS mobile build, or internal Active Directory environment. You will deal directly with the senior specialist executing the assessment.

• Direct Senior Execution• Mutual NDA Available• Reproducible PoC Reporting• Post-Remediation Retesting

Discuss Your Project View Credentials & Verification eren@erengozaydin.com