Evolved Packet Core:- Mobile IP network architect - Team management, strategy planning- Active participation in group-wide projects (United Group)- Project management / owner for all packet core related projects in company (Core swap, VoWIFI, SecGW, 5G SA Core, PWS, ...)- Excellent knowledge of all mobile network protocols and services- Mobile Packet Core (EPC) administration (MME,SAEGW) - Huawei, Nokia- Supporting systems administration (DNS, AAA, DHCP, Proxy, webservers, ...)- Core IP network administration, IP/MPLS/BGP (routing and switching) - Cisco, Juniper- GRX/IPX routing and administration (Firewalls, BGP routing, DRA/DEA)- Cloud-native mobile virtual Core architectures- 4G and 5G SA/NSA Core deploymentsNetwork Security, datacenter networking:- IP / Network security architect- Network security strategic planning and design- Datacenter networking planning and management, classic Core/Aggregation and fabric networks (Juniper, Cisco)- Deep knowledge of best security practices and security strategies- Firewall administration L4-L7 (Juniper, Cisco, Fortinet), multiple clusters for different parts of network- Mobile Firewalls administration (Operator grade firewalls / high load/high avalibility, CGN, IPSec)- SDWAN management (Meraki)- Various VPN technologies (IPSec, client VPN, OpenVPN, VPN concentrators, Security Gateways for mobile networks ...)- Web application Firewall administration (WAF)- LAN/WLAN network management (Access switches, WiFI controllers, APs)System administration/programming:- Deep knowledge of Unix-based operating systems (FreeBSD, various linux systems) and unix software (webservers, proxies, databases, firewalls, ...)- Experience in docker deployments, Ansible automation- php programming (various company-internal projects)- Author of open-source phpipam IP Address Management solution