Mark Schaefer

Berufserfahrung von Mark Schaefer

• Bis heute 9 Monate, seit Aug. 2023

  Senior Network Engineer

  velia.net Internetdienste GmbH

• 3 Jahre und 10 Monate, Okt. 2019 - Juli 2023

  Senior Network Engineer

  Freeport-McMoRan

  CCNP Enterprise certification. Experienced SDWAN (Velocloud), WAN (BGP), cloud (Azure), LAN (OSPF, EIGRP, *STP, HSRP), datacenter (Cisco Nexus). Firewall - Palo Alto (PCNSA certified) RIPE IPv6 Associate

• 5 Monate, Juni 2019 - Okt. 2019

  Senior Network Engineer

  Iron Mountain

  Deploy new infrastructure networks in new and existing datacenters. Combination of Cisco ASAs, Meraki switches, and Palo Alto firewalls in combination with layer 3 Cisco switches using the IOS-XE platform.

• 1 Jahr, Nov. 2018 - Okt. 2019

  Senior Network Engineer

  TB Consulting

  Design and plan network capacity expansion, upgrade monitoring. DMVPN deployment. WAN expansion.

• 6 Jahre und 3 Monate, Sep. 2012 - Nov. 2018

  Lead Network Engineer

  Lumen

  Escalation point for advanced troubleshooting for high impact outages across LAN, WAN, and Wireless. Lead implementation for technologies such as QoS, Multicast, and MPLS to increase security and stability across the enterprise network. Participated in development of technology strategy. Migrated backbone from EIGRP to OSPF and implemented Enterprise MPLS VPNv4 network.

• 11 Jahre und 9 Monate, Apr. 2000 - Dez. 2011

  Senior Network Engineer

  NTT Communications | NTT Europe Ltd., Germany

  Care and maintenance of hosting datacenter network infrastructure. Capacity planning and implementation. Fault detection and repair. Third level network issue support.