packets.sh

Robbin Westerduin

IT support, systems, networks & security

Profile

Graduated as an IT systems and devices technician (MBO level 3) from Techniek College Rotterdam, focused on systems and networks. Since September 2026 I have worked as a support and helpdesk technician at Nedsoft B.V., where I was an intern before. Security has always been my hobby: I have reported several vulnerabilities through coordinated disclosure. At home I run a Proxmox VE homelab, where I work on Linux administration, virtualisation and Python automation.

Experience

Support and helpdesk technician, Nedsoft B.V.

Sep 2026 – present

Employed after my internship.

IT Support Intern, Nedsoft B.V.

Mar 2026 – Sep 2026

IT support for the day-to-day work of the IT department: preparing and rolling out devices, inventory management, maintaining IT assets and writing scripts to automate recurring tasks.

ICT Intern, NXT GEN ICT B.V.

Oct 2025 – Feb 2026

End-user support, hardware troubleshooting and workstation rollouts. Hands-on with Windows systems and networks, supporting day-to-day business IT.

Work experience placement, Stichting Dajong

Feb 2024 – Aug 2024

IT support, computer maintenance, user support and general administrative tasks within a municipal work experience programme.

Education

IT systems and devices technician (MBO level 3)

Techniek College Rotterdam, Rotterdam, 2024 – 2026

IT systems & devices programme. Graduated in 2026.

Certifications

Linux Essentials

Linux Professional Institute (LPI), Jun 2026

ID LPI000688496, Does not expire

Responsible disclosure

Mijn Simyo app and API, Simyo (KPN)

May 2026, CERT#2026052777000311

Several critical and high-severity vulnerabilities reported through coordinated disclosure to KPN-CERT. Listed in the KPN-CERT Hall of Fame.

Skills

Infrastructure
Virtualisation (Proxmox VE), Docker, device deployment, Git
Operating systems
Linux administration, Windows administration, Active Directory, Microsoft 365
Networking & programming
Networking, Python, Bash
Security
Cybersecurity, vulnerability assessment, web application security
Languages
Dutch (native), English (fluent)