Network Engineer Operations Specialist
Resume:
Mob: +263*********, +263*********,
Email:************@*****.***
LinkedIn profile: https://www.linkedin.com/in/arthur-chatambudza
Github:arthurchatam
PROFESSIONAL SUMMARY
Engineer with 18 years of experience in the field of Information Communication Technologies
Project Management, conducting system tests, perfomance evaluation and user acceptance testing on ICT systems.
Monitoring/reporting of tests.
Experience of Unit Testing, regression testing, integration Testing, Acceptance testing Security Testing and Performance testing using automation tools
Good networking skill (L2 VPN, L3 VPN, EVPN, MPLS, SR, LDP, BGP and IGP)
Working knowledge NETCONF / REST / RESTCONF / SOAP
Working knowledge of Source control tools (GitLab)
Ability to work from Jira story tickets
Working appreciation of agile methodologies (scrum)
Experience in network engineering and designing of core network infrastructure, LLD & HLD.
Hands on experience with security systems, Kaspersky End point security, Checkpoint Maestro NG firewall, IBM QRadar SIEM, CISCO IronPort Email Security Appliance/Cloud Secure Email Gateway, CISCO ISE, Radware,Fortinet,Palo Alto, Cisco FirePower Threat Defense,Cisco ASA. Qualys Vulnerability Management System.
Hands-on experience in providing NOC, back office O&M operations for CS & PS nodes, NGN, VoLTE, MSOFTX3000, UMG8900, IMS, SG7000, SGSN, GGSN, PCRF, UGW9811, PGW, SGW, MME, iDNS, eDNS, IP routing configurations for PS domain network elements
Knowledge on telecommunications protocols, SS7, SIGTRAN, SIP, RTP, ATM, BICC, ISUP, H248, CAMEL, S1-U,S1-MME,S5/8, S10, S11,S3,S4, SGs, Sy,Gy,Gx,Gn/p.
Knowledge on TCP/IP, routing protocols EIGRP, OSPF, BGP.
IREG testing for roaming interconnections with SS7, SIGTRAN, DRA and GRX/IPX partners.
Hands-on experience in analyzing Trace messages of MSOFTX3000, UMG8900, HSS9860, SG7000 signalling gateway, IMS and HLR9820 using wire shark and in built trace functions.
Hands-on experience in surveillance and fault management of CS and PS elements through Nokia NetAct, Huawei M2000, and U2000 network management systems.
Hands on experience in working with both CPCI and ATCA platforms in GSM/GPRS/UMTS/WCDMA/CDMA/EPC.
Nokia ATCA MSS System Release 4.0 and Nokia ATCA MGW operations and maintenance.
LLD & HLD infrastructure design for signalling, number analysis and routing.
Integration of Nokia ATCA core nodes(MSS & MGW) to RAN
WORK EXPERIENCE
Network and Operations Security Specialist- ZIMRA (01 August 2021-Till date).
Deployment,testing of system features, operations and maintenance of core security infrastructure(Checkpoint Firewalls, FortiWeb, Radware DDoS, QRadar SIEM, Cisco ISE,Cisco ASA,Cisco FTD, Cisco ESA, Kaspersky Endpoint Protection)
Design, configure, deploy, and maintain network and security infrastructure in coordination with networking team.
Implement firewall solutions to properly secure data and provide consultation on all new firewall implementations, firewall configuration changes, and projects requiring security operational support.
Assist in incident response for any breaches, intrusions, or theft.
Monitor systems for any anomalies, proper updating, and patching.
Evaluate and perform planning, testing, and implementation of software and hardware upgrades.
Maintain system documentation and configuration data for regulatory and audit purposes.
Provide subject matter expertise over network security risk assessment, secure network design.
Participate in the investigation of Information Security Incidents and development of remediation/prevention mechanisms.
Designing Architecture and implementation of ICT Secure Communication channels and mechanisms with collaborative partners (i.e. IPsec, SFTP, SSL/TLS)
Mobile Core Network Engineer –Telecel Zimbabwe (01 August 2007–31 July 2021).
Carrying out routine, preventive and corrective maintenance for CS& PS elements, Huawei MSOFTX3000, UMG8900, HSS9860, SG7000, USN9810,MME,PGW,SGW, UGW9811, EPC, DNS9816,, Nokia ATCA MSS & MGW
System tests to ensure quality of service and identifying software and hardware failures.
Resolving data connection queries related to iDNS and eDNS.
Traffic analysis for MSOFTX3000, UMG8900, HSS9860, SG7000, UPCC and CG9812,
Perform DPI configurations on GGSN, UGW9811 & UPCC.
Carrying out service dimensioning and new plan configurations for core network elements.
Health checks on UGW9811, HSS9860, HLR9820, MSOFTX3000, UMG8900 and PCRF and Execution of system test for validating SW updates and upgrades.
Health checks on GGSN9811,UGW9811,USN9810,
Raising and carrying out CR’s/WO’s and trouble tickets for issues related to PS& CS nodes.
Providing level 2 support to critical alarms generated in MSC, MGW, HSS,DNS, SBC, DRA and CG SGSN, GGSN, PGW, SGW, MME PCRF,.
Execution of CORE configuration changes such as B No. routing plans, charging plans, Short Codes openings, Roaming definitions, and GT openings, legal interception test as per the network needs as well as number analysis, routing analysis, SCCP GT, SSN configurations.
Generating weekly and monthly reports to monitor capacity, utilization and fault tracking.
Responsible for completion of detailed Acceptance Testing including hardware testing, software testing, call testing and different feature testing and validation before commercial launch of Huawei MSC, MGW and UGW,GGSN,PCRF, PGW, SGW,MME,SGSN,USN,HSS, STP,HLR in Telecel Zimbabwe GSM/WCDMA/UMTS/EPC network.
Coordinating with O&M team to successfully complete Revenue Assurance Testing for Nokia MSS and Nokia MGW, Huawei MSC, MGW and UGW, GGSN, EPC, PCRF, SGSN, HSS and HLR.
Creation of signaling links and trunk groups between nodes using SS7, SIGTRAN, SIP, Diameter, BICC, H248, ATM.
EUTRAN (S1-MME, SI-U, SGs) integration, troubleshooting and commissioning of EUTRAN connectivity to core network.
UTRAN (Iu-CS, Iu-PS) integration, trouble shooting and commissioning of RNCs to core network (ZTE, Huawei).
GSM (Gb, A) integration troubleshooting and commissioning of BSCs to core network (ZTE, Nokia, Huawei).
Fixed Core Network Engineer-Tel One Zimbabwe (01 July 2006 – 31 July 2007).
Core network planning (HLD & LLD) of new projects.
Coordinating with operations and maintenance team in the implementation of scripts.
Fault management on core infrastructure.
Performance management and capacity monitoring.
Change management control and configuration management.
Fixed Access Network Engineer-Tel One Zimbabwe (01 August 2004 – 30 June 2006).
Installation and commissioning of IPBXs.
Installation and maintenance of customer terminal equipment.
Underground & overhead cable installation and maintenance.
Implementing cable route plans for new projects.
End to end testing and commissioning of newly deployed services.
SKILL SET
Deployment, testing & operations and maintenance of security devices
-Kaspersky End point security
-Checkpoint Maestro NG firewall
-IBM QRadar - SIEM
-Cisco IronPort Cloud Email Security Appliance
-Cisco Identity Service Engine
-FirePower Management Center
-Firepower Chassis Manager
-Cisco Firepower Firewalls(2130/4112)
-FortiWeb 3000F WAF
CI/CD Knowledge
Cloud Operations
Linux Systems Administration
Handling Huawei products SGSN9810, USN9810, MME, PGW, SGW, GGSN9811, PCRF, CG9812, MSOFTX3000, UMG8900, UGW9811, HLR9820, HSS9860, DRA, SBC, and SG7000, BSCs, RNCs
Huawei datacomms (NE40) and switches, S series, Cisco Routers & Switches
Nokia Core products ATCA MSS & MGW.
Microsoft office.
Python, MYSQL, MS SQL.
Oracle Cloud Infrastructure Certified.
Part time Telecommunications lecturer at TelOne Centre for Learning, Zimbabwe.
PROFESSIONAL AND ACADEMIC QUALIFICATION
MSc Information Systems, National University of Science & Technology (NUST Zimbabwe).
BSc Information Systems, WUA Zimbabwe.
National Diploma in Telecommunications Technology, Tel One Centre for Learning Zimbabwe.
National certificate in Telecommunications Technology, Tel One Centre for Learning Zimbabwe.
City & Guilds Telecommunications & Electronics Engineering certificate.
GPRS /UMTS PS Network Optimization, Huawei University Shenzhen, PR China.
Project management.
LTE training Tel One Centre for Learning.
CERTIFICATIONS
AWS Certified Cloud Practitioner
Google Cloud Associate Certified Engineer
Oracle Cloud Infrastructure 2023 Certified Multicloud Architect Associate
Microsoft Azure Administrator Associate (AZ-104)
Microsoft Azure Fundamentals (AZ 900)
Microsoft Azure AI Fundamentals (AI 900)
Microsoft Data Fundamentals(DP900)
Microsoft Security Compliance & Identity Fundamentals (SC900)
Juniper Networks Certified Internet Associate- Junos (JNCIA-Junos)
Juniper Networks Certified Internet Associate- Cloud (JNCIA-Cloud)
Juniper Networks Certified Internet Associate- DevOps (JNCIA-DevOps)
Aviatrix Certified Network Engineer – Multi Cloud Network Associate
LPI-Linux Essentials (Linux Professional Institute)
Fortinet Network Security Associate (NSE 1 & 2)
ISO/IEC 27001- Information Security Associate
Cyber Security Foundation Professional Certificate
Projects Undertaken
December 2023
-Technical Lead –Deployment of Cisco Cloud Secure- Email Gateway C100V
April 2023
-Project team- member in deployment of Tax and Revenue Management System(TARMS) ZIMRA
-Project team- member in deployment of Fiscalisation system for ZIMRA
February 2023
-Deployed CISCO Identity Service Engine (ISE) on ZIMRA ICT Security infrastructure
December 2021
-Deployed Checkpoint Firewall on Disaster Recovery site.
October 2021
-Deployed Kaspersky Endpoint Security for workstations and servers.
October 2020
-Successfully integrated lawful interception to datacomms and core network
March 2020
-Implemented remote access solution using 4G wireless technology (Access Point Name)
For Telecel employees to access enterprise systems remotely due to Covid-19.
Core network integration, performance management, fault management & configuration management of core network devices.
Monty Project 2019
-Data scripts preparation for integration and commissioning of SMS firewall to SG7000 signalling gateway & HSS.
Net One project 2018
-Reconfiguration of SS7 signalling from MSC to SG7000.
-Data scripts for preparation for integration and commissioning.
Infobip project 2017
-Preparation and execution of data scripts for integration of SMS firewall to SG7000 & HSS.
Nokia Net One project 2017
-Integration of NOKIA MSS to Huawei MSOFTX3000.
ZTE Project 2017.
-Data scripts preparation Iu PS & Iu CS and commissioning of ZTE RNC V4 to Huawei core (PS & CS) (MSOTX3000, UMG8900, and USN9810).
Huawei Project 2014
-Scripts preparation, deployment and commissioning of Huawei EPC (SGW/PGW/MME) on Telecel network.
NOKIA project 2011.
-Preparation and execution of Gb & A interface data scripts for integrating of Nokia Flexi BSC to Huawei core nodes.
ealth checks on GGSN9811,UGW9811,USN9810,
ZTE Project 2010.
-Preparation and execution of Gb & A interface data scripts for integrating of ZTE BSC to Huawei core nodes.
COMVERSE PROJECT 2009
-Preparation of integration data scripts for Comverse SMSC to Huawei Core network (MOSFTX3000 & HLR9820)
LANGUAGE: English
References:
1.Talent Madziwa: Network & Operations Security Manager (ZIMRA)
2.Kudakwashe Sibanda: Manager Core Network(Telecel Zimbabwe)
3.Remember Muchechemera(Senior Telecomms Engineer(POTRAZ)
Contact this candidate