VUMANI NGWENYA

+263*********; +263********* adp5iu@r.postjobfree.com https://www.linkedin.com/in/vumani-ngwenya-0929111b/ Male English 2438 Chinanazi St, Ruwa, Harare - Zimbabwe

Summary

Result Oriented Engineer with more than eight years of experience worked for both telecom operators(Liquid Intelligent Technologies and Telecontract) and service providers with strong expertise in telecom technologies.

Skills

Telecoms Technologies – IMS, Volte and LTE Subsystems – CORE/BSS/OSS/NOC

Monitoring and Analytics – Grafana, Splunk

Infrastructure Orchestration/Virtualization – ESXi, vSphere, VMware

Programming – Python, Android Cloud Infrastructure – Google, AWS, Microsoft Azure

Network-Protocol – HTTPS, SFTP, SSL, TSL, TCP/IP, HTTP, UDP, SSH, Telnet, SNMP,SIP,IoT, Wireshark,Diameter, SS7 Operating Software – CentOS, Redhat, IOS, Windows

Core Platforms – Metaswitch IMS, Sysmaster Platform, SIPWise, MVTS, Itel Switch, A2Billing, Asterisk, Freeswitch, Kamailio, OpenSIPs

Soft-Skills – Great written and verbal Communication, Collaboration, Teamwork, Presentation

Experience

2016 – Present UC Platform Engineer Liquid Intelligent Technologies

Responsible for:

Main role is to assist in the growth, optimization, maintenance and troubleshooting of LIT's Core Voice Platform (Metaswitch IMS Core and Perimeta SBCs) across the Group Opcos.

Managing interconnections with other provider and other Voice Providers through SIP Interconnections and SS7.

Collaborate with internal clients to scope and launch new services and feature and also recommended process improvements, and documented requirements.

Management, administration and support of Cisco Call Manager, Unity and Contact Centre, Cisco routers, Cisco switches across Group Opcos.

Monitor and troubleshoot voice network using SAS, Wireshark and SIPp.

Establishing best practice and optimal deployment for the integration of Microsoft Teams Voice products (Operator Connect, Direct Routing) into the LIT voice environment

Architect and define the requirements for 3rd party network elements that are to become part of the end-to-end voice environment.

design of advanced voice services like Fixed to Mobile, VoLTE and VoWiFi; providing technical leadership for best practices in deploying VoIP / IMS based solutions, and finally the design, creation and documenting of services and products in SIP / VoIP / IMS / TDM based environments.

2015 – 2016 Assistant Manager VoIP Networks Telecontract (Telco), Zimbabwe

Responsible for:

Provide specifications and work with Development teams to define OSS/BSS requirements and subsequent integration via technologies such as APIs. Define tools and workflows to accelerate customer service/product development cycles and the automation of subscriber provisioning.

Research into medium to long term views of the network, ensuring appropriate Enablers are in place to support Business and Operational requirements.

Providing timely project status updates to customers, project managers, and management.

Creating and maintaining detailed project plans, scopes of work, diagrams, and other technical documentation of the enterprise voice network core nodes (SBCs and Switch).

Conducting proactive maintenance designed to ensure optimal performance of the network.

2012 – 2014 Support Engineer Allgent Communications (South Africa)

Responsible for:

Resolving incidents on the network in respect of SLA, SLI, SLO in the managed service project while providing seamless and provisional communication across different levels of the business through many channels

Monitoring network activities and IPPBX through network management software in addition to configuring IP –PBX and configuring / maintaining IP Phones

Providing user training and support on VolP Products, ensuring the efficient transfer of knowledge at all time

Maintaining and managing a LAN network as well as Open Source CRM and ERP System Administration

2010 – 2012 Support Engineer Microcom Technologies Zimbabwe

Responsible for

Technical support for IT and VoIP projects

VoIP Installations Projects and Configurations of Asterisk, 3CX, Avaya and Samsung Office serv PBXs

Providing VoIP and network incident and problem management

Designing, configuring, maintain and managing network security features for local and wide area networks

Implementing improvements to existing network architectures, and network

Working in team-oriented, collaborative environment settings as well as work independently with minimal supervision

Working with Telecom providers and 3rd party hardware/software maintenance vendors

TERTIARY EDUCATION

2006 – 2010 B.Sc. Information Systems Honours Degree Midlands State University, ZW

JOB RELATED COURSES AND WORKSHOPS

Microsoft Certified Teams Administrator Microsoft 2020

Certified XCT Asterisk – Technician Farsouth Networks SA 2017

Certified XCTT Asterisk Trainer Farsouth Networks SA 2017

TACT Telecoms Bootcamps Telco Academy 2016

Certificate in PC Installation and Maintenance Satra Academy 2005

Metaswitch Networks Training, Deployment Overview, Accelerated Perimeta, Clearwater Core, HPBX Fundamentals, CFS, https://community.metaswitch.com 2017

Implementing CISCO Collaboration Core Technologies (350 – 801) Torque IT Completed

Linux Administration Training, Advanced Communications, www.advancedzim.com

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