Engineer Data

LIMBERG ELMER CHERO FLORES

CURRICULUM VITAE

PERSONAL SUMARY

Systems Engineer with 13 years of experience in the software development process in consulting companies.

Eleven years of experience participating in projects in the analysis, development and testing stages to improve traffic processing and automate operational processes in telecommunications companies such as Telefónica Peru, Entel Peru, Claro Peru and WOM Chile.

Experience in mediation and development of backend processes.

Ability to work in a team, ease of learning, teach others and goal oriented.

Interested in new challenges that put approve my technical skills and learn in the process new technologies.

Availability to work inside and outside Peru.

ACADEMIC TRAINING AND CERTIFICATIONS

TECHNOLOGICAL UNIVERSITY OF PERU

Systems Engineering

WORK EXPERIENCE

Second Line Support Engineer

ADECCO (3PP CIA Ericsson)

July 2017 – August 2020

Functions:

Investigate technical problems, troubleshoot operating systems, Cluster Veritas, Diameter protocol, SOAP, REST services.

Participate in mediation systems solutions (Ericsson MultiMediation On-Line/Off-Line) during critical situations.

Development and deploy of new flows in Ericsson MultiMediation On-Line/Off-Line. Projects: Volte, Fixed Telephony, Roaming outbound on DEV, QA and PROD environment.

Projects and Achievements:

-ADM at Claro Peru Full Stack. Support in Ericsson's Mediator Systems On-Line/Off-Line(OSS BSS) on productive environment.

Business Analyst / Technical leader

HEWLETT PACKARD

June 2010 – September 2017

Functions:

Responsible for analyzing issues about voice / data traffic.

Responsible for developing solutions for evolutionary and corrective requirements.

Responsible for certifying roaming partner of Entel Chile (WOM).

Projects and Achievements:

-Entel Client Projects Peru

Project: Grouping of WhatsApp and M2M data traffic

Functions:

Reduce the amount of data traffic generated by whatsapp and M2M by grouping the volume of data up and down by client for configurable periods of time on the iX Mediation platform.

Implement traffic grouping according to customer requirement.

Project: Improvements in prepaid and control traffic processing

Functions:

Implement changes in telephony, messaging, multimedia content and data workflows to identify prepaid traffic and control in order to avoid sending prepaid traffic and control to rating processes

Process creation in java programming language that allows to process prepaid traffic and control of the mentioned technologies. The process can be configurable to increase performance over time.

Reduce the amount of traffic sent to the rating processes

Project: Improvement in the process of roaming traffic - Generation of TAPOUT and NRTRDE files

Functions:

Creating process in java programming language that allows duplicate records to be deleted in the traffic of each roaming partner.

Implement duplicate detection in the NRTRDE flow on the iX Mediation platform.

Avoid duplicate errors in the generation of TAPOUT files

Reduce manual workload in operation.

Understanding of rating processes and respective queues.

Projects: Traffic filter according to requirement

Functions:

Implement traffic filters for data, voice and messaging on the iX Mediation platform in order to filter traffic for various purposes such as not charging certain traffic that should be free.

Understanding the application of affected filters and components.

Projects: Change of type of data or values in the traffic according to requirement

Functions:

Implement changes in data types or traffic values as required, for example rounding in the amount of data traffic.

Workarounds implementations when a necessary field does not arrive in the CDRs that iX Mediation needs.

Understanding CDRs in ASN1 format for HUAWEI MSC technologies; GGSN, SGSN, Comverse, TIMWE.

Projects: Responsible for developing solutions for evolutionary and corrective requirements.

Implementation of 2G, 3G, Portability and NRTRDE projects in Nextel Peru.

Implementation of project Change of trade name Nextel to Entel (OSS / BSS processes: Payment, Roaming, Billing).

Implementation of project Change of trade name Nextel to Entel (local processes).

Implementation of a currency exchange project (OSS / BSS processes: Payment, Roaming, Billing).

Implementation of a currency exchange project (local processes).

Implementation of project Migration of postpaid plans from the BSCS platform to the ALU billing process.

Solution to incidents that occur in Entel on a daily basis. (Back-ground Unix / Perl / PL-SQL processes, ixMediation, Rating processes).

- Client Projects WOM Chile

Implementation of 2G, 3G, Portability and NRTRDE projects in Nextel Chile (WOM).

Roaming 3G Nextel Chile Certification.

Test of billing systems for the implementation of the 3G Nextel Chile network.

Technical Analyst

NEXTEL (ENTEL)

April 2009 – June 2010

Functions:

Development and implementation of Nextel Backend processes.

Projects and Achievements:

Implementation of 3G services on Nextel Peru receipts.

Development of internal reports of Nextel Peru for the Data Warehouse processes.

File transfer and control process from Network Elements to Nextel Peru Servers.

Technical Analyst

NEXTEL (ENTEL)

May 2008 – April 2009

Functions:

Development and implementation of Telefonica Backend processes.

Projects and Achievements:

Generate broadband traffic reports - Telefónica del Perú.

Install UNIX / LINUX servers.

Install ORACLE 10G Database, SQL 2000.

Migration of data from the Informix database engine to Oracle 10g.

SEMINARS – COURSES

-Student of the X Cycle of the Technological University of Peru (UTP).

-Graduated from the Institute of Technological Administration (IDAT).

-Student of the ORACLE 10g Database administration course at CIBERTEC.

KNOWLEDGE

Computing:

-Unix/Linux Shell script

-Oracle PL-SQL (8i-11g)

-Oracle BD (8i-11g)

-PostgreSQL

-Java J2EE (IDE Eclipse)

-DUP

-SQL SERVER 1997-200X

-Visual Studio 2005

-XSL (Extensible Stylesheet Language)

-Windows/UNIX /LINUX/OS400 Server

-Pro*C

-Perl

-Jira

Tools by Business:

-TELCO

-OSS/BSS (Mediation, Roaming, Rating, Payment, Billing)

-Languages:

English: written and spoken intermediate.

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