Lotengan Kelvin

- Administered and maintained domain nodes including NetAct, Ericsson ENM/OSSRC, and ZTE EMS servers. • Implemented and supported the integration of Operational Support Systems (OSS) and network element management applications. • Managed system access and security administration using appropriate tools and standard processes. • Maintained and standardized configurations of Node Managers and Access Servers, including modifications and reconfigurations. • Conducted hardware reviews, monitoring server status, connections, terminals, and coordinating hardware maintenance. • Supported network expansion activities, including software upgrades, updates, and patch management. • Integrated and managed new systems and applications into the existing network environment. • Handled network/system faults by investigating alarms, system events, and trouble tickets, escalating complex cases for resolution. • Developed and documented OSS administrative procedures and generated periodic system performance and availability reports. • Participated in emergency incident handling to ensure service continuity. • Administered user accounts and managed database retention as per Airtel AAISP standards. • Coordinated with the Performance Management (PM) team for STS-related issues. • Validated incident reports and Root Cause Analysis (RCA) for OSS domain issues. • Verified and followed up on backup tracker processes to ensure data protection and compliance. • Monitored and ensured timely closure of OSS trouble tickets (TT) within SLA. • Managed Nokia GDC tools for OSS operations

- Successfully delivered large-scale POC, 4G LTE & 5G RAN rollout projects across East Africa, supporting the integration and expansion of 500+ LTE sites for Jamii Telecommunications Ltd (Kenya) and Somlink (Somalia), Unitel & IPlook (Angola), INSISTNET (Gambia), ISAT Africa (S.Sudan, Zambia & Congo), Comsol (S. Africa) while consistently meeting SLA and performance targets through effective coordination with field and backend engineering teams. - Delivered end‑to‑end LTE/5G technical support for customer deployments. - Performed network rollout, planning, integration, optimization, and troubleshooting activities. - Supported system/function verification, interoperability testing, and performance evaluation. - Acted as technical interface between customers, sales, and R&D teams. - Coordinated field and remote teams to ensure timely project delivery. - Supported live network issues and customer escalations in time‑critical environments.

> Planning and Implementation of Wireless Access Network activities related to BSC/RNC & BTS/NodeB/eNodeB Network Elements. > Wireless OMCR support for BSC/RNC & BTS/NodeB/eNodeB related activities including configuration, commissioning, monitoring, troubleshooting and Health check. >GSM/UMTS/LTE expansion on SRAN sites. Co-MPT conversion of Tunnel and 2G sites, Twin Beam and Power expansion 4T4R MIMO and 4T6S and New Roll-out Activities implementation of sites. > IP Re-modification of G,GU,GUL and Tunnel sites. and E1/T1 to IP conversion of sites. > BSC6900 and BSC6910 Survey, Subrack Expansion and IUPS expansion for capacity Enhancement. > NEs Alarm Definition in U2000 and querying different types of alarm of Network Elements. >BSC/RNC and BTS version/Patch Up-gradation to Latest version as required. >Core Consolidation functionality testing with RF and Core team. >Taishan U2020 Server, Survey, Installation, Commissioning and NE Migration from U2000. >5G/gNodeB Trial sites Commissioning, troubleshooting and X2-Nbrs implementations for anchoring sites handover on X2-Control Plane. >Troubleshooting I & C related issues. Provide technical support to field teams for Installation, integration & commissioning. > Software upgrades.General maintenance (trouble tickets, patch updates, top issues tracking, precaution bulletins, customer weekly meetings, team meetings and experience sharing…) >Technical support for the RNC/BSC 6910 which include routine RNC/BSC O&M and troubleshooting, GUL Nodes Management. >Perform maintenance on 2G/3G/4G technologies, cell site installation plus development and commissioning of the mobile station network depending on vendor.

-Monitor and maintain performance for BSS network equipment (BSC/RNC) for vendors Telkom and Safaricom Network. -Perform maintenance on 2G/3G/4G technologies, cell site installation, plus development and commissioning of the mobile station network depending on vendor. -Ensure prompt resolution of all service affecting problems within the stated technologies and within company stipulated SLA’s. -Live alarm monitoring and first/second level troubleshooting of hardware faults/ -Ensure that all equipment associated with the technologies meet company standards. -Providing level 2 support to Field Engineers for troubleshooting hardware and software faults. -Ensure preventive maintenance is performed on all Radio the equipment.

Dimensioning of 2G/3G/4G networks as requested by the clients  Analyzing RNC Capacity requirements: RNC6900/RNC6910 and Evo Controller 8200/RNC  Solution analysis end to end on RAN domain  Performing 2G/3G/RG RF Optimization services as required by clients: Checking on accessibility, Retainability, Integrity and Mobility  Planning and optimization of 2G/3G new/swapped sites  Coordination and analysis of drive tests both on 2G and 3G snapshots and drive test extracts  Trouble-shoot I & C related issues. Provide technical support to field teams for installation, integration & commissioning.  Alarm & performance monitoring in support with NOC/GDC.  Technical support for the RNC/BSC which include routine RNC/BSC O&M and troubleshooting, GUL Nodes Management.  BTS Configuration data planning and harmonisation with regard to existing site configurations and planned expansions before swap.

1. Seeds for the Future Program training. 2. Detailed training on (Key Technology of ICT, 4G Base Station Data Configuration and 5G and its technologies;(IoT and Cloud Computing)

- I was part of the Safaricom Optimization Project responsible for optimization of 2G(G900, G1800), 3G(U900, U2100) and 4G(L800, L1800) wireless technologies undertaking the following activities:

O.D.K Assistant for a baseline survey in Turkana county and as well as a Data Enumerator

Duties and Responsibilities. 1. Monitoring and maintaining computer systems and networks. 2. Configuring and administering Windows Server DNS, DHCP, File, Application, web, Domain Controller and Exchange Mail Servers. 3. Assisting the system administrator in maintaining security of all the servers. 4. Verifying that all the network peripherals are working properly. 5. Setting up and maintaining network software, VOIP, VPNN, WAN and LAN communications links for optimal performance. 6. User support. 7. Hardware repair and maintenance. 8. Software support and troubleshooting.

Learning Chinese language, calligraphy and culture