Burak Eren

Cybersecurity Engineer | Application & Network Security | Penetration Testing | Identity, Endpoint and Vulnerability Management

Antwerp, Flemish Region, Belgium

About

Cybersecurity professional with hands-on experience across application security, penetration testing, enterprise identity, endpoint security and vulnerability management. I combine offensive security knowledge with practical enterprise IT operations and client-focused remediation support.

Experience

  • Information Technology Specialist at BaseBeyond GmbH
    Aug 2025 - Present · 11 mos

    Supporting enterprise IT operations with a security-first approach across identity, endpoint, and network infrastructure. • Identity & Access Management: Administer Azure AD and on-prem Active Directory — security group provisioning, conditional access policies, privileged account reviews, and role-based access control enforcement across the organization. • Endpoint Security: Manage device compliance and hardening through Microsoft Intune — deploying MDM/MAM configurations, compliance policies, OS patching cadence, and conditional device enrollment to reduce endpoint attack surface. • Incident Management: Handle incidents, problems, and service requests through ServiceNow, coordinating response and documentation in line with ITIL practices across Windows and macOS environments. • Network & Infrastructure: Maintain core network infrastructure (switches, routers, VPN, DNS/DHCP), troubleshooting connectivity and access issues across hybrid environments. • Vendor & Cross-team Collaboration: Partner with internal teams and external vendors on infrastructure improvements, contributing to availability, performance, and overall security posture. • Documentation & Knowledge Sharing: Document procedures, recurring incidents, and resolution patterns to support continuous improvement of IT and security processes.

  • Cybersecurity Instructor & Curriculum Developer at OAK Academy
    Feb 2024 - Aug 2025 · 1 yr 7 mos

    Designed and delivered offensive and defensive cybersecurity curricula as both bootcamp instructor and Udemy course creator. • Offensive Security Curriculum: Authored and recorded comprehensive red-team courses — Full Ethical Hacking, Web Application Penetration Testing, Metasploit Framework, and Burp Suite Professional — covering reconnaissance, enumeration, exploitation, and post-exploitation workflows. • Defensive Security Curriculum: Developed blue-team content spanning FortiGate Administration, CompTIA Security+ preparation, Qualys EDR, and Qualys CSAM — covering firewall management, endpoint detection, and vulnerability management programs. • Bootcamp Instruction: Taught networking fundamentals (switching, routing, VLANs, DHCP, DNS, subnetting, infrastructure security), Offensive Security, and Cryptology across an 8-month intensive cybersecurity bootcamp. • Curriculum Design: Built structured lesson plans, hands-on labs, and assessment exercises aligned with industry standards and real-world attack techniques. • Mentorship: Provided 1:1 career guidance, technical support, and personalized feedback to students transitioning into cybersecurity and IT roles. • Content Maintenance: Continuously updated course material to reflect evolving threat landscape, tooling, and defensive best practices.

  • Cyber Security Consultant at Digisec Bilgi Teknolojileri
    Nov 2022 - Mar 2025 · 2 yrs 5 mos

    Delivered end-to-end penetration testing engagements for clients across logistics, construction, beverage production, and insurance sectors — covering scoping, execution, reporting, and remediation support. • Web Application & API Pentesting: Tested authentication and authorization flows, business logic, input validation, and endpoint-level security across REST APIs and web platforms. Identified issues including broken access controls, IDOR, injection vectors, session management flaws, and SSRF. • Network Pentesting (On-Prem & Cloud): Assessed internal and external network security, identifying misconfigurations, insecure architectures, exposed services, and privilege escalation vectors across hybrid environments. • Active Directory Assessments: Executed domain-level pentests covering Kerberoasting, AS-REP roasting, delegation abuse, lateral movement, and password policy weaknesses — mapping attack paths with BloodHound and leveraging Responder for credential capture. • Red-Team Style Engagements: Simulated realistic attacker behavior to evaluate detection gaps and organizational resilience — initial access, persistence, and internal pivoting scenarios. • Reporting & Client Collaboration: Delivered technical reports with prioritized findings, reproducible PoCs, and concrete remediation steps. Worked directly with client IT and security teams to support fixes and retest remediation. • Methodology & Research: Continuously researched emerging vulnerabilities, CVEs, and techniques to keep engagements aligned with the current threat landscape.

  • Penetration Tester at Hacker Academy
    Apr 2024 - Sep 2024 · 6 mos