Lewis Siamuntu

• Subject Matter Expert on Network Infrasttucture
• Designed and implemented POS network for the insitutional from legacy setup
• Project Technical led for the ZNBS Relocation project
• Project Team lead for the Datacentet collocation to Infratel
• ATM EFT and Network setup
• VISA connectivity setup and troubleshooting
• Project team member of the ZNBS Core banking system upgrade project
• Vendor Management
• Support of Digital channel connectivity for Mobile Banking,USSD,Internet Banking .
• NFS comnectivity checks and intergrations.
• Collaborated with cross-functional teams to integrate emerging technologies into existing network systems effectively.
• Monitored network capacity and performance to diagnose and resolve complex network problems.
• Provides network support services for 22 branches across the country
• Troubleshot complex multi-vendor network service provider issues.

Project Technical and Team lead for the following projects 1.Airtel Merak SDWAN Implememtation

2.Design and Installation of WiFi for Bayer Itaaba Seed plant kabwe

3.Design and Implementation of DMVPN for Bank of Zambia

4.Structured Cabling for Bank of Zambia Datacenters

4.WiFi Optmization for Airtel Zambia

5.Implementation of SDA Acess for Bayer Itaaba Seed plant Kabwe

6.Upgrade of TransUniom Core device

Lead Engineer-Barloworld Managed WAN SLA

Lead Enginner-Pick and Pay Managed WAN and LAN SLA

Private Cloud and VMware Support for ZRA

Subject Matter Expert on Network,Security and Collaborations

Design of High level and low level design

Preparations of RFQ

• Offering Second Level Network Support and Troubleshooting Backbone links and Access links
• Configuration of ISIS for the ZAMREN New Point of Presence(POP’S) and Migration of old PoP’S to ISIS backbone
• Troubleshooting of international links with the Upstream Providers and Network integration with other ISP
• Responsible for IPv6 Roll Project out on the ZAMREN Core Network Infrastructure
• Project Technical lead-ZICTA Universal Open accesss fund -Survey and installation of Optic fiber for last mile connectivity to remote locations
• Offer Support for Installation and configuration of Infrastructure
• Project teachnical lead for Setting up of Katete ZAMREN PoP and Internet Conmection at St Francis School of Nursing and Midwifery
• Setting up and optimization of Wireless Access Network using Unifier Controller
• Troubleshooting of Optic fiber using OTDR
• Engaging Customers to implement best Security practices
• Offering Direct Engineering Assistance to Higher Learning Institutions Universities, Colleges and Secondary Schools connected to the ZAMREN Network
• Configuring SNMP for Observium and Nagios for the purpose on Monitoring on Network devices
• Survey for LAN extension and Network Optimization
• Troubleshoot Network connectivity for ZAMREN Cloud based services
• Configuration of Auto Failover using ISIS and BGP for our Member Institutions with Backup link.

• Project Technical lead for the MTN Firewall migrations project .
• Project Technical lead for the MTN Ericsom EDA Expansion Project
• VPN connectivity Support fot Third Parties
• Network access challenge troubleshooting on Cisco ISE
• Maintain an up-to-date database of the enterprise IP addressing scheme including interconnectivity of branch and service center
• Work with InfoSec Team to apply/remediate security incidents as applicable on Web Proxies and Firewalls
• Between multiple MTN Partners across the globe - Configure and troubleshoot P2P links between branch offices and Service Centers country wide escalate to Upstream connection providers
• Dynamic Routing Protocols

• Experience in client and Service Provider Routing and Switching
• Setting and troubleshooting of POS network for Various banking on MTN Enterprise metwork
• Hands on experience with Cisco, Juniper and Huawei routers and switches
• Configuring and Troubleshooting of MPLS and VPN Connectivity
• Configuring and troubleshooting of Cisco DMWPN and GRE-IPsec Tunnels
• Addition of Enterprise Clients on the AAA Server
• Creation of APN on HLR for POS
• Checking for Roaming barring on the HLR
• Hands on BGP, OSPF, EIGRP and IS-IS Routing Protocols and STP Email Relay, Email hosting and Domain related queries related
• Checking of Network Performance KPI for 3G/4G
• Configuring of APN for Banks POS on the Huawei Eudemon

• Monitoring and Surveying Mobile Network Transmission and Wireless Networks (SLA) Time.
• Troubleshooting transmission faults on DWDM and Aviat Networks
• Offering first line assistance for Core Networks, BSS, Wireless, Transmission, Datacom and Power
• Resolving remotely Transmission and Network Quality affecting faults
• Escalating all unresolved faults to responsible
• Assigning Network Faults to responsible Field Engineers and Ensuring that Network Faults are resolved with the Service Level Agreement