• Main technical contact for about 15 customer companies and cross-vendor 2nd and 3rd-level support, focused on Fortinet (FortiGate, FortiAnalyzer, FortiClient EMS), Aruba (WLAN, switching, ClearPass, AirWave, NetEdit, Central) and Sophos XGS, plus Cisco and Meraki.
• From planning to deployment: end-to-end ownership of network and security projects, covering customer consulting and requirements analysis, design, evaluation and selection of suitable solutions, implementation, testing, handover and further development of LAN, WAN, WLAN, VPN, routing, switching and segmentation.
• More than ten cross-vendor firewall migrations, mostly as lead and focused on FortiGate and Sophos XGS: taking over and cleaning up rule sets, migrating VPN, NAT and WAF configurations, and planning tests, cut-over and rollback.
• Support in handling serious cyber attacks through network segmentation and isolation of affected systems, followed by hardening of the network infrastructure.
• Predictive WLAN planning, site surveys, validation measurements and troubleshooting with Ekahau; preparing and presenting the results with concrete optimisation recommendations.
• Ongoing maintenance of the network and security infrastructure of the customers I look after: monitoring, firmware and security updates, configuration backups and regular security reviews.
• Nationwide remote coordination and technical guidance of on-site technicians during incidents, including scheduling, customer alignment and steering the technical work.
• PowerShell, Bash and Python scripts for data collection, configuration optimisation and troubleshooting.
• Network documentation, installation guides, solution and implementation descriptions, and runbooks for recurring incidents.

Certifications

• Sophos Firewall Technician (S80)
• Sophos Firewall Architect (AT80)
• Sophos Firewall Engineer (ET80)
• Sophos MSP Connect – Sales Consultant (MSP01)