Mulugheta Zelleke

**** ********* *****

Plainfield, IL 60586

Cell: 630-***-**** acxqge@r.postjobfree.com Alternative: 630-***-****

Professional Summary

Self-motivated Integrated Test Network (ITN) Lab and Network Operations Test Engineer experience in contributing and leading small to medium and large projects.

Knowledgeable in overall Product developments and Software Development Life Cycle (SDLC) phase that encompasses coordinating functional requirements, Planning, Designing to system configurations and development, test plans/cases, and execution to final product deployment.

Knowledgeable in overall System/Network Operations Support of AT&T IMS CVoIP & Universal Service Platform for Consumers (USP), VoLTE in a ITN lab and Production environments.

Experienced in End-to-End Network Elements (NEs), System/Performance & Platform Testing and script writing and executions for IMS, USP & VoLTE products and services.

Experience in troubleshooting complex network problems in real time to resolve and restore services.

Year’s experienced in Identifying, investigating, troubleshooting and determine root causes analysis (RCA) issues found in Production & in Labs (PSL/SIL) and worked with ATS and vendor for resolutions.

Worked with Advance Technical Support (ATS) and Vendor that issues found in the Productions labs (PSL) troubleshoot and helps to restore network elements to services.

Experience in Network Verification testing components of various network elements (CVoIP, USP VoLTE) in USP VoIP Application organization.

Trained on AT&T Technology Transformation Track and AT&T’s Network Transformation courses such as Big Data, Domain 2.0, Software Define Networks, Network Functions Virtualization, Virtualization and Cloud Computing.

Familiar/Trained on Enhanced Control Orchestration Management and Policy (eCOMP) components-Active & Available Inventory, Master Service Orchestrator, Data collection Analytics.

Detail-oriented with strong skills in interpersonal communication with ability to develop effective cross-functional and organizational relationships resulting in on-time delivery of critical projects.

Demonstrated leadership through a strong planning and good organizational skills and communication using structured Software methodologies and best practices.

As ITN Lab test engineering, support (Tier-3) Advance Technical Support (ATS) for IMS CVoIP & USP Core Network Elements in Productions Labs (PSL) in troubleshooting issues and MOP execution/configuration efforts.

Knowledgeable in software and hardware configurations, troubleshooting, and evaluating application for different products and services.

Experienced with Quality Center for tracing/tracking defective products and also worked using TMATS for repository test plans and test cases.

Familiar utilizing CISCO/Juniper router devices for call processing scenario in lab environments.

Excellent skills in driving software quality initiatives and network product delivery plans to successful conclusion in collaboration with system engineers, developers, testers, and production/field support teams.

Experiences with 1360 COM Application Server & Provision tools for CVoIP & USP-VoLTE network elements configuration and provisioning.

Worked on Method of Procedures (MOP) Software Upgrade using manual & automated 1360 COM SU tool applying releases and for field implementation for CVoIP & USP/VoLTE Network elements.

Experienced with detailed documentation of Test Plans & Test Cases and repository test results in SharePoint.

Participated in Project meetings to review system and test requirements for various network elements in ITN Lab & field implementations.

Worked on providing end to end production and escalation support to Operation and Service team.

Experience System/Performance testing and script writing/executions for Gateways, iPDU & Software applications, SmartZone Rack Monitoring Software products and services.

Worked with iAF (Integrated Automation Framework) based on Selenium (web browser) tool to execute test case for Physical Management Software application.

Experience with Scrum Framework (Agile Methodology) roles as Tester in cross-functional team of five to nine members, at start of Sprint understand requirements Write User Stories, Test Plan & execute Test Cases and every two weeks perform a Demo to Stakeholders i.e. Product Owner, Product Developers, Master, Developments & Testers.

Using Scrum role methodology, worked effectively cross-functional and organizational relationships resulting within Sprint period delivered critical projects.

In a Scrum Team, worked with Developers, Testers, and Project Management & Product Owner in estimating and planning (Sprint) meeting of network product features to delivery schedule.

Experience with various protocols including SNMP for collection information and configuration USP VoLTE network devices and applications.

Exposed and Familiar with Trinity architecture and designed within BVOIP platform.

General knowledge in Wireless E911 call processing in CDMA platform and CALEA (LIG) USP platform.

Available and willing to work off hours and support as needed.

Education

DePaul University M.S., Computer Science/ Telecommunication, Chicago IL

DeVry University B.S., Computer Information System, Addison, IL

Recipient of the Who’s Who among Students in American Universities and Colleges award.

Technical Skills

Wireless/Wirelines Technologies: IMS, UMTS, USP-VoLTE, CVoIP, CDMA, WiMax

OS/Platform Experience: UNIX/Linux, Windows (NT/XP/Win 7/8), & DOS

Database Software Experience: ORACLE (10g) and (11g) DBA, ERP (11i), Oracle EMS GUI

Network Elements/GUI Experience: Elements Management System (EMS), NEs & OS.

TCP/IP, VLAN, LAN/WAN, PCM, HSS, ISUP & RTP,

Quality Center, SharePoint & Test Center

Languages/Testing Tools: IBM Jazz, Java Scripts, Spectra 2, Hammer G5, WireShark,

Python

Professional Experience

AT&T Warrenville, Illinois. 2015 – Present

Network Support/Service Specialist - CVoIP IP Multi-media System (IMS) and Universal Service (USP) VoLTE Test Engineering (VoIP Organization)

As Network Supported/Service team, supported multiple Network Elements, from reviewing/executing Method of Procedure (MOP) to execution Production environments.

Worked on Network Operation Readiness Test (NMORT) for USP-VoLTE network elements script writing, test execution, creating test plan/cases repository test results.

Worked on Acceptance Testing with vendor (Nokia) after integration and installation of USP/VoLTE network elements and verify Golden Standard requirements.

Experienced on Software Upgrades for IMS, USP VoLTE network elements such as ISC, CCF, and CTS in Production environments

Worked with Vendor to resolve issues identified during Network Management Operation Readiness Testing (NMORT) for USP/VoLTE products and services..

Responsible for handling customer support tickets through closure, managing the inbound queue, tracking response, and interacting directly with both client and internal stakeholders.

Worked on configuration of c4506/4500x Cisco Switches and test/verify physical/logical connection to USP/VoLTE network elements and traffic monitoring sessions.

Analysis and evaluated lab/field discovered issues and worked diligently with Advance technology Service & ITN Lab team to resolve the issue.

Worked on Oracle EMS GUI to configure SBC ACME device and resolved issues device configuration failures.

Familiar with Diameter Signaling Router (DSR) architecture in the USP platform and wrote test plan and test case for NMORT testing.

Lead Tester for SBC ACME network elements in the USP VoLTE platform for Network Management Operation Readiness Test (NMORT) efforts.

Coordinate/Manage SBC ACME Test Plans and Wrote/Executed Test Cases in Pre-Production environments, fixed/resolved issues, support Users and trained/guide new testers.

Work with Advance Technology Services (ATS) to execute DSR test cases for USP Pre-Production environments.

Support cross-functional organizations such as SPP to configure and perform load configuration test SBC ACME devices using Oracle EMS GUI Tool.

Worked on multi-vendor equipment such as HP, Nokia, to resolve issues identified during end-to-end (E2E) network element testing and verifications and analysis/evaluated lab/field related defectives worked diligently to resolve issue.

Support cross-functional organizations such as Network team to troubleshoot/debug IMS CVoIP, USP/VoLTE network elements

Experience with IRIS call flows and trace probe for CVoIP, USP, VoLTE network infrastructure and Network Elements in ITN Lab & Production environments.

Wrote and executed CVoIP, USP/VoLTE Test Plan & Test Case for Pre-Production network elements such as CCF, ISC, CTS and verify Golden Standard requirements.

Contributed and published IPv6 Support and Monitoring Tools for CTS in the Network Technology Development Process for Universal Services Platform (USP) test document.

Work with Advance Technology Services (ATS) in PSL lab to support MOP execution CVoIP, USP VoLTE Network Elements 5420PCM, PCM, HSS,ISC, 5420CTS, & CCF network elements.

Perform SIP to SIP and SIP to PSTN tests cases for CVoIP IP Multi-media System (IMS) USP, VoLTE Network Elements Post MOP execution in Production environments.

Performed review of Methods of Procedures (MOP) documents prior of manual and automated 1360 COM tool Software Upgrade for USP/VoLTE network elements.

Using automated 1360 COM SU tool, execute Pre-SU Check to make sure health check pass and system is ready for Software Upgrade.

Identify issues during USP-VoLTE Software Upgrade and work with vendor to make sure problem resolved prior to network elements enter to production for service.

Using Method of Procedures (MOP) doc., configured network elements for the IP multi-media system IMS CVoIP platform.

Trained and familiar with OpenStack Software platform consist of interfaces Components that control diverse, multi-vendor hard of processing for Cloud Computing mostly deployed IaaS in data center.

Understand and trained OpenStack (Nova) Cloud Computing to manage resources and monitoring end-to-end performance for tracking metrics.

Exposed to AT&T eCOMP architecture components such as Active & Available Inventory, Master Service Orchestrator, Data collection Analytics.

Working knowledge of AT&T integration and installation standard such as Gold Standard (GS) doc.

Panduit Inc., Tinley Park, Illinois 2013 – 2015

Senior System Test Engineering

As Sr. Software/System Test engineering, worked on: - Panduit Gateways Generation II & III, SmartZone Network-Enabled Rack POUs & Physical Infrastructure Management software/SmartZone Rack Monitored Software applications.

• Verify to make sure Gateways ports connections to IMS lab network via Ethernet cables are stable.

• Configure GWs to establish communications via SNMP Network Management System IP address of a Server.

• Coordinate and Plan Test Case execution of Gateways (GWs) and Verify and document test results.

• Upload Test Plan documents in SharePoint repository and update test results periodically.

• Coordinate periodic ONLINE meetings to update and present test case status to managements & stakeholders.

• Download latest Firmware Release and perform test to verify Gateway device functionality and performance.

• Document methodology used and ratify process to make sure to deliver quality Gate Way products.

• Coordinate, Plan & Discuss with cross- functional team to manage test cases execution and update results.

• Support Internal/External PANDUIT GWs/PDUs CUSTOMER and Maintain to ensure devices Uptime.

• Develop and perform test plan to optimize methodology for performance testing of GWs/PDU products.

Panduit SmartZone Network-Enabled Rack PDU (aka IP address based Power Distribution Unit) Device:-

• Coordinate and Plan Test methodology for Panduit branded iPDU devices.

• Organized Intelligent Power Distribution Unit (iPDU) Test Plan into two functionalities: - GUI & SNMP.

• For each functionalities area, Created test plans on Microsoft Excel spreadsheet, organized Rows/Columns.

• Wrote test cases for each functional area (SNMP & GUP) with several test scripts.

• Manually executed GUI functionality, after launch Intelligent Power Distribution Unit via a WEB browser.

• Manually executed SNMP functionality using CMD and Management Information Base (MIB) browser.

• Upload Test Plans documents in SharePoint repository and update the doc post plan execution.

• Also created Jazz base Test Plan, Test Cases and Test Scripts for tracking/tracing purposes.

• Plan a Semi-auto test execution of the test case in Jazz and manually post test results.

• Coordinate and plan the utilization of the iPDU device with developers and testers to manage the devices.

• After configured SNMP NMS, successfully discovered the device in PIM software application.

• Also after configured SNMP NMS, successfully be able to add the device in SmartZone Rack Monitored software.

* Using IBM JAZZ (automation tool), execute Test Cases and reposted test results and test status

Panduit Physical Infrastructures Management (PIM) Software application & SmartZone Rack Monitored Software:-

• Contributed and help to deliver to customer three Major Releases -5.0.1, 5.1.0, 5.2.0 & 5.2.1

• Planned and participated a two weeks Sprint Planning for each software release.

• Worked on several User Stories for Panduit Physical Infrastructures Managements Software.

• Wrote detailed Acceptance Criteria for each User Stories and discussed with Scrum team.

• Worked with Product Owner (PO) to clarify User Stories and agreed upon Acceptance criteria.

*Executed test case using iAF automation tool for Physical Infrastructure Management software applications.

• Plan and coordinate a meeting to review and discuss the test case with stakeholders.

• Upload Test Plan documents in SharePoint and update for any changes.

• Also, created Test Plan, Test Cases & Test Scripts in JAZZ to track/trace.

• Execute Test Cases in JAZZ and test results posted manually to reflect test status.

• Worked on verifying several CUSTOMER reported an internal CRs of PIM Module.

AT&T Warrenville, Illinois. 2010 – 2013

ITN Lab & Network Support/Service Specialist - CVoIP IP IMS, USP & VoLTE Platform Test Engineering

Worked on Pre-production Software Upgrades such as PCM, ISC, SCG, and CTS … etc network elements for several sites such as Chicago, San Antonio, Kansas City and Cleveland.

Experienced on analysis/evaluation lab issues such as defective products and trace it in Quality Center and worked with development and vendor diligently to resolve the issue.

Worked on OS layers such as Application Layer, the Network Layer and the Access Layer for IMS CVoIP & USP platform.

Wrote and executed Acceptance Test Platform (ATP) for Network Elements test cases & also manage/maintain in TMATS database.

Create data of IPv4 & IPv6 IP address of Platform Network Elements to be used in IRIS call trace and protocol analyzing.

Test and verify physical/logical connections between the Network Elements and the CISCO Switches.

Perform validation/verification test of Gigabit Ethernet ports for the 4506E-2 switches in ITN lab.

Using CISCO router switch perform verification test of Platform Network Elements traffic monitoring sessions.

Contributed in published IPv6 Support and Monitoring Tools for CTS in the Network Technology Development Process for Universal Services Platform (USP) test document.

Configured Hammer G5 automation tool for eight thousand subscribers for Platform Network testing.

Work with Advance Technology Services (ATS) in PSL lab to support MOP execution Network Elements 5420PCM, HSS, 5420CTS, PCM & CCF network elements.

Perform SIP to SIP and SIP to PSTN tests cases for CVoIP IP Multi-media System (IMS) Network Elements in ITN Lab environments..

In ITN SIL/PSL Lab, executes test cases for 5420PCM, 5420CTS and HSS (HCF/HDF), CCF Network Elements, post Software Upgrade.

Post Network Elements installations, execute Field Verification (FV), test case to verify and make sure proper Functionality of Application Node and DB Nodes servers in a lab set up.

Execute Approved For Use (AFU) test cases to validate and verify post load upgrade of the Network Elements.

Identify network elements SW/HW issue and work with Vendors to resolve and restore functionality of the server.

Negotiated with Vendor to troubleshoot, replace mal-functional components of Network Elements at NO Cost for the company.

Update and maintain Test Cases in Test Managements and Tracking System (TMATS) for all Network Elements.

Executed network elements test cases in reference to industry standard requirements such as IEEE organization.

Wrote and executed Acceptance Test Platform (ATP) for Network Elements test cases & also manage/maintain in TMATS test cases repository database.

Create data of IPv4 & IPv6 IP address of Platform Network Elements to be used in IRIS call trace and protocol analyzing for USP project..

Test and verify physical/logical connections between the Network Elements and the CISCO Switches.

Perform validation/verification test of Gigabit Ethernet ports for the 4506E-2 switches in ITN lab.

Worked on Domain Name Server (DNS) and FQDNS for Customer Telephony Service (CTS) Network Elements.

Configured Hammer G5 automation tool for eight thousand subscribers for Platform Network testing.

Familiar and understand that within the USP-B Interface, the USP-C interfaces with USP-C UEs via the USP-C Access and also CVoIP UEs interface with CLIMS cloud.

Understand USP-B interface USP-B Client (webRTC) via USP-B Access.

Also, familiar with the Interworking between USP-B, USP-C and CLIMS design analysis, which examines call flow scenarios at high level.

Worked with the USP-C design for specific G10 probes (IRIS web server) and since VoIP elements are shared between USP-C and USP-B, the existing USP-C designs application.

MOTOROLA NETWORKS, Arlington Heights, Illinois 2007- 2009

Elements Management System/Network Managements System Test Engineering

Developed test scripts for regression of existing functionality, bug isolation and new functionality.

Reported and tracked issues/ problem using tools: ClearCase and Test Management, TestCentral and resolved 100% of the technical issues reported.

Installed/ Upgraded Operating Systems and successfully test software products on Linux/Unix platform.

Resolved reported software issues by troubleshooting using end-to-end network problems in a system lab.

Executed test cases for WiMAX products with high percentage success rates and updated in TestCentral.

Minimized rate of defective software products by using best practice testing methodology.

Contributed to maximize the bottom line by reducing 50% field related software issues.

Successfully performed VoIP (mobile to mobile and mobile to landline) calls on LAN/WAN environment

With 100% pass rate, successfully executed IPSec tests cases using GUI on Linux/UNIX/ Windows platform.

Executed several automated/manual wireless product test cases using EMS GUI tools.

Reviewed and provided feedback on internal specifications and external documentation.

Nokia (former ALCATEL-LUCENT TECHNOLOGIES) Naperville, Illinois Déc. 1997- Nov. 2006

Lead Software Tester, Network Management and System Tester Engineering

Worked with customer teams to determine the test system architecture and expectations.

Participated in requirement design reviews to ensure quality products during development & test phases.

Reviewed test cases and execute existing regression test suites while executing on product roadmap.

Utilized CM and Version Control Tools & resolved 100% possible software conflicts.

Reviewed Requirements documents, wrote Test Plans/Test Scripts and track test results using ClearCase and Test Management, TestCentral on Linux and Windows environment.

Reviewed requirements and design documents and provided feedback to systems engineers and developers.

Wrote and executed test cases per system requirements and high level/low level design documents.

Provided technical assistance to departments to ensure success of product development objectives.

Supported and integrated hardware and software products and verify system functionalities.

System Lab Test Engineering/Coordinator

Demonstrated product performance and give a tour of a system lab to potential customers.

Developed and Coordinated activities across platforms and functional areas for build and test environments using UNIX/Linux and Windows.

Set strategies for software updates and package testing in system labs.

Facilitated continual improvements of Quality Management System by measuring risks and priorities as documented in the Release Management policy and ISO-9000 compliance.

Played key advocacy role in support of instituting automation testing, which helped save the project resources, time and effort usually spent on executing testing manually.

Helped to increase the rate quality of the software products released by following the proper quality assurance process, using formal release criteria and product functional specifications.

Led the software product integration and package testing efforts, by providing demonstration and certification testing environments.

Ensured the quality of the final products by integrating the software development process, requirements gathering and documentation, source code control, code review, change management, configuration management, release management and actual testing of the software.

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