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Moldovan Darius

@moldovandarius

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Senior penetration tester at BOOKING HOLDINGS who tests web apps, AI agents, APIs, and networks.

Romania

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At BOOKING HOLDINGS, I perform penetration tests and vulnerability assessments across web applications, AI Agents, APIs, infrastructure, and internal and external networks. I simulate attacks, assess business impact, and prioritize risks.

I write pentest reports with proofs of concept and remediation recommendations, then collaborate with technical teams to validate fixes and retest applications. My work applies OWASP, PTES, NIST, and ISO27001 methodologies.

At BIT SENTINEL, I performed penetration tests across applications, APIs, infrastructure, and networks, and helped clients validate and remediate vulnerabilities. I also used Burp Suite, Metasploit, Nmap, and Nessus.

At CYBEREDU, I design and administer Kubernetes clusters for educational security environments and develop hands-on pentesting labs. I also build intentionally vulnerable applications and contribute to CTF-style exercises and attack simulations.

Experience

Work history, roles, and key accomplishments

Current

Senior Penetration Tester

Current

Booking Holdings

Apr 2026 - Present (7 months)

Performing penetration tests and vulnerability assessments for web applications, AI agents, APIs, infrastructure, and networks. Identifying and exploiting vulnerabilities using standard methodologies and writing detailed reports with PoCs and remediation recommendations.

Penetration Testing Vulnerability Assessment Web Application Security API Security AI Security OWASP PTES NIST ISO 27001 Burp suite Metasploit Nmap Nessus Hackbots

Current

Cyber Security Tournaments Manager & Security Labs Author

Current

CyberEDU

Jan 2020 - Present (6 years 10 months)

Designed, configured, and administered Kubernetes clusters for educational environments and security scenarios. Developed hands-on laboratories for pentesting and constructed controlled vulnerable environments for practical exercises.

Kubernetes Docker Penetration Testing CTF Security Labs Infrastructure Containerization Technical Support

Senior Penetration Tester

Bit Sentinel

Sep 2020 - Apr 2026 (5 years 7 months)

Performed penetration tests and vulnerability assessments for web applications, APIs, infrastructure, and networks. Identified and exploited vulnerabilities using standard methodologies and wrote detailed reports with PoCs and remediation recommendations.

Penetration Testing Vulnerability Assessment Web Application Security API Security OWASP PTES NIST ISO 27001 Burp suite Metasploit Nmap Nessus

Education

Degrees, certifications, and relevant coursework

University of Petrosani

Bachelor Degree, Electrical and Mechanical Engineering

2017 -

Pursuing a Bachelor's degree in Electrical and Mechanical Engineering, ongoing since 2017.

Offensive Security

Offensive Security Certified Professional (OSCP), Cybersecurity

Earned the Offensive Security Certified Professional (OSCP) certification, demonstrating skills in network penetration testing and vulnerability exploitation.