Leonardo Arraez Email & Phone Number

Bern

Paris Area, France

Responsible of the study, planning, testing, validation and implementation of complex and strategical projects such as:- GSM/UMTS Core Network platform elements to support multi-country FMVNO business portfolio.- Technical study and roll-out of EPC nodes such as DEA, DRE, IWF, HSS, DNS, and PGW to support LTE services - Interconnection to key roaming sponsor providers and diverse GRX and IPX carriers to allow fast deployment of roaming footprint and inter-working with national and international operators worldwide.- Deployment of infrastructure required for roaming data exchange processes (TAP, NRTRDE)- End-to-end implementation and follow-up of Roaming agreements (GSMA AA.12, AA.13, AA.14) with operators worldwide (40 direct and over 200 indirect)- Technical study planning and roll-out of BAP and production of diverse USIM cards projects with main manufacturers.- Testing and implementation of multi-imsi applets for USIM card roaming management.

Gibraltar

- Working experience with Core Network Products (MSC, HLR, SGSN, GGSN, SMSC), IP Networks and GSM/3G wireless architectures, network infrastructure (BTS, BSC, OMC, RAN(RNC,NodeB)) and protocols. - Plan and implement projects for interconnections of the signaling network (ISUP - SIGTRAN) with international Roaming Hubs- Perform IREG/TADIG roaming tests/validation for new partner agreements (GSMA IR.24, IR32, IR 50, IR.27 among others)- Process and organize statistics of the mobile network for the national telecommunications regulatory commission- Produce all relevant detailed design documents and methods of procedure for core network maintenance and optimization.- Plan and implement project for number portability feature on the mobile and fixed network

- Member of multidisciplinary research team that studied new technologies for mobility management and ubiquitous networks- Design, and implement under C++/TCL a module for Media Independent Handover Information Services on the NIST mobility module for the network simulator NS-2 based on the IEEE 802.21 standard spécifications.- Design test scenarios for mobility vertical handover events in nodes with multiple wireless interfaces (802.11, 802.16, 802.3 and Wimax)- Test and verify the correct deployment of the basic primitives of the IEEE 802.21 MIH protocol, on the NIST module for NS-2.- Compare the proposed solution to similar approaches given for other platforms.

Designed, assembled and provisioned a mobility management platform adjusting to the needs of the Logiciels et Réseaux department at Télécom SudParis. Tested, verified and validated the correct deployment of the IETF RFC5201 HIP protocol, IETF RFC3344IP Mobility Support for IPv4 and IETF RFC 3775 Mobility Support in IPv6 in the installed test bench. Evaluated and compared performance measurements for different implementations of the protocols HIP and Mobile IP. Designed improvements for the handover management features of the network protocol during mobility events.

- Designed solutions for the expansion of more than 1.000.000 new subscribers to be added to the GSM and NGN Core Networks of two main telecommunications operator companies of Venezuela. - Planned, coordinated and delivered over twenty (20) roadmaps and technical presentations related to NGN and GSM core networks and access networks for the clients. - Counseled, collected and handled new requirements from the customer for the improvement of their NGN and GSM networks.- Assisted and prepared RFIs and RFPs reports with different pre-sales department teams.

- Analyze problems in the network and propose solutions to them.- Organize, coordinate and supervise work groups.- Install, test, configure, operate and provide support to Huawei electronic equipment.- Provide training to personnel of the NGN and GSM networks of the customer.- Design and translate technical manuals for the Huawei electronic equipment used in the network of the customer.

- Developed a web-based system for management and control of technical support tickets and maintenance reports.- Assisted technicians on troubleshooting of different devices in the national pressurized cabling network of CANTV- Enhanced performance of the monitoring system (PMAP) servers through routine maintenance

- Responsible for the installation and configuration of the network for the store.- Performed routine maintainance to computers and network.- Trained new staff on operation of hardware and software and basic troubleshooting of the network.

Msc, Computer And Communication Networks

A program under a research environment oriented towards a strong practical and theoretical knowledge in the areas of telecommunications.

B.S., Electronic Engineering

An engineering program in the fields of electronics, with a minor in Communications, focused towards the study of different.