Network Security & ICT Consultant

Delivering robust, secure, and innovative IT solutions with over 25 years of experience.

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About Me

Jurgen Kobierczynski Profile

Welcome to my professional portfolio! I am a dedicated Network Security Engineer with extensive experience in designing, implementing, and managing robust security solutions. My expertise spans industry-leading technologies, including Cisco, Check Point firewalls, Palo Alto firewalls, and Juniper firewalls. Additionally, I have a strong background in administering and securing both Linux and Windows server environments, ensuring optimal performance and protection against evolving threats. I am Fluent in Dutch, advanced in English, and basic in French, I excel at resolving incidents from analysis to implementation. Analytical, independent, and a lifelong learner, I am committed to delivering secure and efficient IT solutions.

Outside of my professional endeavors, I am passionate about astrophotography, capturing the wonders of the cosmos, 3D printing, and gaming.

Skills

Networking

TCP/IP, Routing, Switching, Ethernet, IEEE 802.1X, ARP, STP, OSPF, RIP, BGP, IGMP, DNS, SMTP, IPSec, PPTP, SSH, SSLVPN, RDP, Active Directory, Netflow, SOCKS

Firewalls

Check Point, Palo Alto, Juniper, Fortinet, Symantec, Cisco PIX/ASA, PFSense

Operating Systems

Linux (RHEL, CentOS, Kali, Parrot OS, Ubuntu, Debian), Windows (10, Server 2012/2016/2022), MacOSX, OpenBSD

Virtualization

VMWare vSphere, ESX, NSX 6.0, Oracle VirtualBox, Docker, Proxmox

Network Defense

Splunk, ELK, Snort, Wazuh, Zeek, OSQuery, SecurityOnion

Pentesting

NMAP, Burp Suite, ZAP, Metasploit, Kali, Nessus, OpenVAS

Work Experience

Network & Security Engineer

National Lottery, Brussels | Feb 2004 - Sep 2019

Configured, implemented, optimized, and monitored IT infrastructure to ensure secure digital operations. Worked with Check Point, Juniper, Cisco, Nortel, Linux, Windows, VMWare, Infoblox, and Raritan.

Network Security Engineer

Telenet, Mechelen | Jan 2022 - Aug 2023

Resolved incidents, implemented network changes, VPNs, intrusion detection, and identity awareness policies using Check Point, Palo Alto, Infoblox, and F5.

Network Consultant

Capgemini, Machelen | May 2021 - Aug 2021

Conducted undisclosed network assessments, including internal and external evaluations and reporting.

System Engineer

Traffic/SYKES/SDL International, Leuven | Feb 1998 - Jun 2003

Managed PCs, systems, networks, Windows, and Linux servers, providing user support.

PLC Engineer

ENI, Aartselaar | Aug 1997 - Feb 1998

Developed PLC and SCADA projects using Siemens Step 5, Step 7, Genesis, and Simatic HMI.

C/SCADA Engineer

PEC, Leuven | Dec 1995 - Aug 1997

Worked on C and SCADA projects using IBM OS/2, C/2, DB/2, DAE, Plantworks, and PMW.

Education

Industrieel Ingenieur Electriciteit

KIHL Diepenbeek | 1991 - 1995

Thesis: Interactive Analysis Device for Hardware Testing of Automated Installations

ACE Telecommunicatie

GroepT Leuven | 2000 - 2003

Thesis: Cisco Netflow Accounting Using FlowScan under Solaris

Certifications