Management of Information System, Fungurume and Lubumbashi, Haut-Katanga, the Democratic Republic of Congo. * Supported the company infrastructure and improved resilience of the network environment of overs 500 nodes (Cisco devices) and overs 90 servers and a Windows 2008 Domain with 5,000 users - Designed and implemented network solutions for mine operations, staff residence and administration offices of the company including Metropolitan Area Network Link using point to point telecommunication equipment as Motorola PTP600 and Cisco Bridge, Local Area Network (LAN) using the latest Cisco technologies, Installed and configured Windows server 2008 et 2012 OS on servers. - Maximized network performance by monitoring performance, fault investigations, troubleshooting problems and outages, scheduling upgrades and collaborated with network architects on network optimization - Configured routing switching security, and services in various devices (e.g., Cisco Routers, Switches, Firewalls, Load Balancers, ACS Server, Riverbed Steelheads, Catalyst 3560X, 3750X, 3850, 4507 and 65000 Series PoE, 1800 series, 2600,2900 series, etc.), Firewall ASA 5520 et 5515-X series, Cisco Wireless LAN Controller 4400 series et 5500 Series, Cisco iron port ML170 et S170 (Web Security appliance), ), Dell PowerEdge Servers, Cisco UCS C200 Servers, Dell Tapes Library for data backup. - Worked within established configuration and change management policies to ensure awareness, approval and success of changes made to the network infrastructure.