CV/Mission d'Expert Power Designer freelance

Exemple de missions d'Olivier,
Expert Power Designer habitant Paris (75)

Expérience professionnelle

01/2017 -05/2023 Core CS and PS engineer
Customer: Bouygues Velizy under the responsibility of ********

Employed as technical referent to provide support to the PS, CS and interconnect networks in a lab and production environment.
Vendors involved: Nokia, Ericsson, Cisco, Broadsoft, Mavenir, Oracle
• Prepare all the use case tests for the IMS access such as VoIP, VoLTE, VoWifi
• Work with Core and Roaming performance team (KPIs, wiresharks) in order to detect the faults in access networks such as the RAN 2G 3G, 4G, 5G NSA, WIFI, Interconnects partners + detect faults in the voice and data core networks.
• Perform the troubleshooting in the maintenance team for the national and roaming network for the following equipment’s: the vCSCF (CFX), IAD, AS Centrex, vMTAS, vISBC, vMME, vSPGW, HSS, HLR , vMSS, and MGW in the production.
• Interface with the project manager to ensure the efficient delivery of the project to meet the given deadlines on the different projects.
• Excellent understanding of the openstack and the SDN cloud Nokia
• Excellent understanding of the IP network (F5, FW, Cisco routers, Fabric IP)
• Excellent understanding of the R4, EPC, Volte, VoWifi and VoIP call flows
• Support the troubleshooting of the following equipment vMSS, MGW, NT-HLR &HSS, vMME, S/PGW, vPGW, DNS/ENUM, vPCRF, P/I/S/E-CSCF, ISBC, vMTAS, E-PDG

10/2016 -12/2016 IMS core engineer

Customer: Bouygues Telecom

Employed within the study of an IMS RFQ for Volte, VoWifi and VoIP (Fix)
Project – RFQ IMS (cloud); vendors Nokia, Ericsson, Capgemini, Huawei and KCC
• Analysing suppliers’ answers during the Request for Quotation (RfQ) phase & evaluating suppliers’ solutions
• Excellent understanding of the Volte, VoWifi and VoIP call flows
• Good understanding of the cloud architecture (work with Openstack lab)

01/2016 -09/2016 Core Senior engineer IMS and CS

Customer: Three UK under the responsibility of ******** Core IMS and CS Manager – responsible of the Core CS, IMS, SDM and FEMTO part.

Employed within operations to provide second line support maintenance of the current core CS and IMS network.
Project – maintenance of the core CS and IMS network
• Very strong working experience on troubleshooting of the Rel4 Nokia MSS, MGW (DX200, IPA, ATCA), CDS , and SDM Nokia (HSS, HLR, MNP and EIR) and Oracle SBC
• Good working experience on troubleshooting of the MME, E-I-P-CSCF SAMSUNG and Mitel TAS
• Very good understanding of the Volte and VoWifi call flows

07/2014 -12/2015 LTE Core Technical Lead (Architect)
Customer: NOKIA under the responsibility of ******** Core Program Manager – responsible of the Core PS, CS and SDM part.

Employed within operations to provide technical support during the merge of :
Three Ireland Network and O2 Ireland Network- in Dublin, (CS PS core and IN servers)
Project1 – LTE national Roaming
The goal of the project is the implementation of LTE roaming for O2 subscribers into Three Ireland’s 4G networks.
• Prepare the solution document “High Level Solution Design Reference for 3ROI LTE Roaming for O2 Subs” which outlines the design for impacted systems in Three UK and 3ROI and O2 Networks domains (End to End solution)
• Prepare the solution document “Testing Strategy for LTE”
• Prepare all the test use cases for the PS, CS Core and IN : elements involved ; MME, SGSN, SAE-GW, HSS, HLR (One-NDS), Radius server, OCS, IN platforms, ATCA MSS, ATCA MGW …
• Perform the testing and troubleshooting of the MME, SGW, PGW, HSS, MSS, MGW, in the Lab.
• Interface with the project manager to ensure the efficient migration (or deployment) of the network to meet the given deadlines
• Audit the High Level Design, Low Level Design documents for O2 LTE
• Support the implementation work order by auditing the data-build delivery from NSN
• Support the implementation of the CS Fallback (LTE) and PS (SGSN, HSS)
• Support the troubleshooting of the following equipment ATCA MSS M16, ATCA U50 MGW, NT-HLR &HSS NSN, SGSN, MME, SGW, PGW, DNS during the rollout of the CS and PS network

Project2 – Golden Cluster and Core consolidation
During core consolidation, THREE will replace the existing O2’s core. During and after the swap, all the services that the O2 subscribers can access today while in their home network must remain accessible.
• Prepare Mapping of services from Ericsson to Nokia Equipments. (MSS, HLR and IN)
• Prepare all the Use cases CS, PS
• Participate of the testing and troubleshooting of the use cases in the Lab.

08/2012 -06/2014 Core IMS CS designer
Customer: TELIASONERA OPERATOR under the responsibility of ******** Chief Network Specialist – responsible of the System and Development department.

Employed within operations to provide technical support during the modernization of the TeliaSonera Network in Finland, Sweden and Norway (CS core, IN AS servers, MRF, VMS modernization)
Project1 – IN modernization in TS Finland:
• prepare the strategy for migrating the complete VAS platform (elements involved, MSS, FE(s),BE(s) NT-HLR & IN, MNP data-base, MRF, IP backbone)
• Interface with the project manager to ensure the efficient migration of the network to meet the given deadlines
• Prepare the High Level Design, Low Level Design documents for the VAS services

Project2 – Core CS modernization in TS Finland:
• Support the migration implementation by auditing the data-build delivery from NSN
• Support the implementation of the CS Fallback (LTE)
• Support the troubleshooting of the following equipment ATCA MSS M16, U5 MGW, NT-HLR &HSS NSN, SGSN during the rollout of Core CS network
• Prepare the Low Level Design document for the IN services

Project3 – Common IVR modernization:
• Pre-study phase DP2– define the architecture in order to integrate the Common IVR in 3 different countries
• Vendor involved for delivering the MRF ; Convergys
• Vendor involved for delivering the SIP ; Huawei, Ericsson, NSN
• Challenge the vendor solution by comparing the interfaces and features specifications based on the 3GPP and RFCs specification
• Prepare the High Level Design document for the MRF services

Project3 - Mobile office in TS Norway:
• Pre-study phase DP2–DP3 - Prepare the IMS architecture in order to integrate the Broadsoft AS servers
• Analysing suppliers’ answers during the Request for Quotation (RfQ) phase & evaluating suppliers’ solutions
• Prepare High Level Design (HLD) phase & Low Level Design(LLD) phase
• Support of solving interoperability issues between various IMS components
• Verification of IMS network element configuration (Broadsoft)
• Vendors involved in Norway for delivering the S-CSCF, MGCF, HSS and TAS ; Huawei, Broadsoft
• Challenge the vendors solutions by comparing the interfaces and features specifications based on the 3GPP and RFCs specification
• Implementation of the Mobile office Solution (SIP interfaces towards the S-CSCF, MGCF, MRF and TAS);

03/2011 -07/2012 Core CS, PS rollout manager

Customer: TANGO OPERATOR under the responsibility of ********

Employed within operations to provide management support during the rollout of the Nokia core network on the Luxembourg Release4 project (Pooling concept).

• prepare the migration plan and strategies for migrating the complete CS and PS network
• Support the migration implementation by auditing the data delivery from the Nokia equipment
• Interface with the project manager to ensure the efficient migration of the network to meet the given deadlines
• Troubleshooting on the ATCA MSS M16, U5 MGW, NT-HLR NSN, SGSN
• Prepare the documents (Low Level Design, High Level Design) and tools for migrating all network elements to R4 core NSN such as; PSTN, PLMN, RNCs Huawei and NSN, BSCs Huawei , PBX, and OLCM.
• Migration to the new IN SYMSOFT platform ; from INAP Ericsson to Camel phase 2& 4 (elements involved, MSS, FE(s),BE(s) NT-HLR & IN, MNP database, IP backbone)

08/2009 -02/2011 Core R4 rollout manager

Customer: NSN Czech Republic under the responsibility of ********

Employed within operations to provide management support during the rollout of the Nokia core network on the T-Mobile CZ Release4 project (Pooling concept).

• prepare the migration plan and strategies for migrating the complete network R99 to R4
• Support the migration implementation by auditing the data delivery of the NSN equipment and RANs Huawei
• Interface with the project manager to ensure the efficient migration of the network to meet the given deadlines
• Prepare the documents (Low Level Design, High Level Design) and tools for migrating all network elements to R4 core NSN such as; PSTN, PLMN, RNCs Huawei and NSN, BSCs Huawei , PBX, and OLCM.
• IN platform migration, implementation in the MSS of the Camel phase 2, (& camel phase 3)

06/2007 -07/2009 R4 Core engineer

Customer: NOKIA PARIS France under the responsibility of ********

Employed within operations to provide second line support of the rollout of the Nokia core network during the SFR Release4 project (Rollout of 21 million subscribers).

• Very strong working experience on troubleshooting Rel 4 Nokia MSS (DX200), CDS & MGWs (IPA2800)
• Good working knowledge of integrating/troubleshooting ESB/ESA cards to IP back bone
• Good working knowledge on call routing, signaling on both user & control plane
• Act as dedicated expert for advanced Care consultancy and support; provide technical to a large and/or complex end-to-end projects or troubleshooting cases.
• Network expansion activities up to multi-interface level.
• Provide advanced technical support and troubleshooting/fault localization within several competence areas and Multi-Vendor Interface
• Lead and provide consultancy during compl...