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Mazen ShamdeenMS
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Mazen Shamdeen

@mazenshamdeen

Cybersecurity researcher on independent security projects and software developer building a Flutter marketplace with secure access controls.

Lebanon
Message

On my independent software projects, I designed and developed a mobile marketplace using Flutter and Dart. I integrated Supabase and PostgreSQL for authentication, database management, and backend functionality.

I also developed a web-based administration dashboard and implemented Row Level Security policies and role-based access controls. The application includes subscription systems, premium features, and automated listing management.

Through my cybersecurity freelancing projects, I’ve conducted controlled web and API security testing, OSINT investigations, and vulnerability research. I responsibly disclosed findings through authorized platforms such as HackerOne and Bugcrowd.

As a Corporal in the Lebanese Armed Forces, I contributed to identifying and recovering missing people during active operations and assisted with confidential digital investigations. I also managed and maintained unit IT systems, including servers, computers, and networks.

Experience

Work history, roles, and key accomplishments

LF
Current

Corporal

Lebanese Armed Forces

Jun 2018 - Present (8 years 4 months)

Contributed to reconnaissance and recovery operations, assisted in confidential digital investigations, and managed unit IT systems including servers and networks. Also served as Operations Clerk and Executive Assistant to the Commanding Officer.

IP
Current

Software Developer

Independent Projects

Designed and developed a comprehensive mobile marketplace application using Flutter and Dart, integrating Supabase and PostgreSQL for database management and authentication. Implemented security features and resolved bugs across frontend and backend.

IP
Current

Cyber Security And IT Freelancing Projects

Independent Projects

Performed controlled web and API security testing, identifying vulnerabilities such as authentication, authorization, injection, XSS, XXE, and data exposure. Conducted OSINT and cyber reconnaissance for authorized security operations and vulnerability research.

Education

Degrees, certifications, and relevant coursework

SS

Semicolon Security

Associate Certification, Information Security

2026 - 2026

Information Security Associate certification from Semicolon Security in 2026.

LA

Lebanese Cyberspace Association

Certificate, Cybersecurity

2026 - 2026

Certificate from the Lebanese Cyberspace Association in 2026.

Cisco logoCI

Cisco

Certification, Ethical Hacking

2026 - 2026

Ethical Hacker certification from Cisco in 2026.

SS

Semicolon Security

Professional Certification, Web Security

2026 - 2026

Web Security Professional certification from Semicolon Security in 2026.

Cisco logoCI

Cisco

Certification, Cyber Threat Management

2026 - 2026

Cyber Threat Management certification from Cisco in 2026.

SS

Semicolon Security

Foundation Program, Ethical Hacking

2025 - 2025

Ethical Hacking Foundation Program from Semicolon Security in 2025.

SS

Semicolon Security

Certificate of Attendance, Ethical Hacking

2025 - 2025

Attendance certificate for the webinar 'Inside The Mind of Ethical Hackers' by Semicolon Security in 2025.

SS

Semicolon Security

Certificate of Participation, Cybersecurity

2025 - 2025

Participation in Cybersecurity Day 2025 organized by Semicolon Security and Google Developer Group.

KZ

Khalifah Bin Zayed

BT, Electric Engineering

2014 - 2017

BT Electric Engineering program covering electrical fundamentals, machines, power systems, electronics, control systems, and installation and maintenance.

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