Freelancer profile translated to English.

Description

I am an experienced IT security and network engineer with over six years of practice in enterprise networks, IT security, and campus, enterprise, and data center networks. My expertise includes network design, routing & switching, firewall implementations, configuration, troubleshooting, incident management, and change management. I work extensively with devices and solutions from Cisco, Fortinet, Sophos, and Aruba.

I support companies in planning, implementing, and optimizing network infrastructures through pilot rollouts and customized solutions. I am responsible for technical implementation, troubleshooting, change management, and the creation of BOMs (Bill of Materials) as well as technical documentation to efficiently and timely deliver stable, secure, and scalable networks.

Languages

German
Native or bilingual
English
Fluent

Workplace preferences

Can work on-site

Bochum (up to 50km)

Apotheken
Project Architect
HEALTH AND WELLNESS
October 2025 - February 2026 (4 months)
Tübingen, Germany
**Project**: Migration of datacenter switches (Mellanox), firewall cluster, and OfficeConnect switches to a new datacenter. Setup of two new 6300 M switches in the VSX cluster, including HA designs, testing, and monitoring.

**My tasks**: Planning and execution of the migration, securing configurations, implementation of HA designs, testing and monitoring, as well as coordinated change and incident management processes.
mellanox HPE Fortinet
Anynom
Network Security Specialist
ENERGY AND UTILITIES
October 2025 - January 2026 (3 months)
Wesel, Germany
**Project**: Setup of a complete Fortinet solution with HA firewall (70 G and 90 G), FortiSwitch PoE, FortiAPs, IPSec Remote Access VPN, and central management via FortiCloud. The solution includes secure user access via Intra ID as well as operation and incident management.

**My tasks**: Planning and design of the infrastructure, installation and configuration of FortiGate, switches, and APs, setup of the VPN with FortiClient and Intra ID, central management via FortiCloud, as well as monitoring, backup, and incident management.
Fortinet
Universitätsklinikum
Network Security Specialist
HEALTH AND WELLNESS
September 2025 - January 2026 (4 months)
Tübingen, Germany
Project:Datacenter security at a university hospital – Implementation of a highly available FortiGate 400F firewall cluster for three datacenters, including security policy design.

My tasks:Conception and implementation of the firewall cluster, operational support, as well as change and incident management.
Fortinet IT Architecture IT Strategy