David Cherel Email & Phone Number

Nantes, Fr

Région De Nantes, France

Projet personnel - veille technologique autour des Distributed Ledger TechnologyInstallation de Virtual Machine : IOTA Node Veille technologique autour des bases ScyllaDB

Nantes Area, France

Involved in Engineering and Integration projects, delivering upgrade and technical procedures to maintenance teams for Oracle Technology into SAP Environments: SAP CRM, SAP ISU, SAP BW.SME on Oracle Issues, particularly focused on Performance Issues, Architecture, Migration and Upgrade.As an Oracle SME I can be involved in Crisis Management on critical issue with other customers. (Task Force)I am the head of a small Technical Community on Database Administration in Accenture Nantes.2nd Level of Oracle Certification : Oracle Certified Professional 12c.Migration of SAP Databases towards 8 Exadata Racks:*Architecture on High Availability: RAC, Data Guard, ASM, network*Migration method : Transportable Tablespaces + Triple O ("Oracle GoldenGate with Online SAP Migrations")Tool development with high level of automation : Bash script and PerlDatabase Migration and 19c Upgrade for SAP Application.Project : A Major Electricity Supplier, processing of the billing, multi billion euros revenue processed a year.Oracle environments: -Oracle 12c / 19c : Exadata, RAC, DataGuard, ASM / GRID-Oracle 11g : RDBMS, RAC, Oracle Restart (GRID Infrastructure), Data Guard-ETL : InformaticaOS Environments:-OL5 (Exadata)-AIX -Linux Redhat-Windows Server 16Various technical topics: * Database migration towards Exadata (50 To)* Database storage migration : from classical File System to ASM.* GRID and RDBMS Installation and upgrade to 19c* Data Guard : Architecture, Deploiement, Broker configuration, log extensions, standby creation.* RAC : Patch Upgrade * Massive database object reorganization : Saving 6 Tbyte of disk space*Postgresql : migration from Oracle to Postgresql, trouble shooting on performance.* SQL Server : Installation 2016 version on Windows Server 2016.* Oracle Cloud Infrastructure : training done for future certificationOracle Trainer on the Accenture Service Center (500 employees)Manager of Junior DBA's (follow up, training, ...)

Orvault France

Technical Support Engineer on Mobile Core network equipment: HSS or HLR, the dynamic database for Mobiles, in the 3G / 4G Networks.The high availability of this equipment is paramount : no outage allowed-> Troubleshooting with high pressureSupport and on-call duty periods for EMEA customers: Orange, Vodafone, SFR, etc...In charge of introducing in the team a new support methodology: KCS , Knowledge-Centered Support.-> Acting as a coach to promote this Knowledge Management methodology and as a change agent in the way people work in technical support.-> technical interface with Knowledge Base Engineering.(Ottawa, Canada)Technical Skills:-Database: MySQL NDB with active/standby database.-Linux Administrator: RedHat Enterprise-Telecom Network-Hardware Maintenance: Conduct remotely hardware replacement with on-site operators, system backup/restoration.-System Maintenance: Patch installation, writting of procedure.-IP Network: TCP/IP Proficiency, Routing Configuration on OmniSwitch 6850, Alcatel-Lucent 7750 SR=> Certified IP Network Routing Specialist Level 1: Alcatel-Lucent NRS1 Certification

Orvault, France

Level 3 / TEC / Technical Expert Center support activities, with duty periods: 7 days in a row 24/24H.Oracle Expert in the team (15 p).Support for IT Platforms carrying telecom applications - Mobile prepaid service and Value-added Service (VAS).Complex Production platform made of up to 100 unix servers : UnixTru64 HP, Solaris, Linux RHEL * Delivering fast response to customers (Orange(Europe,Africa), Bell Mobility(Canada), BSNL(India), TTSL(India), Globacom (Nigeria), etc..) according to SLA (Service Level Agreement)* Main concerns: Restore service ASAP on production platforms and provide consistent Root Cause Analysis (RCA) to customers and Engineering (Bug reports writing)-> Emergency missions (unplanned missions) on Customer sites to solve critical issues:* TTSL (Tata, Hyderabad, India)* Orange Dominicana (Santo Domingo , Dominican Republic)* Nextel (Mexico)=> Excellent feed back from the customers for explaining and solving issues.=> Customer confidence restored => Extension of business for Orange Dominicana and Nextel Group in IN / VAS Payment sector => Multimilion-Euro Projects gained=> Know-How in Crisis Management with Customer Service Outages=> Technical trainer/teacher on Oracle Performance and migration strategy for Indian, Belgian and French colleagues.Technical Skills:-Oracle DBA with proficiency in performance tuning (Execution Plan, Optimizer Mode, Pool management, sqlarea, redolog, RMAN, Archivelog, etc ...) Version 8i, 9i, 10g.-Oracle database migration.-Patch installation.-Unix Administrator : Unix HP Tru64, Solaris 8, 9, 10 . Backup, snapshot, restoration.-Unix Cluster Admin: Sun Cluster 3.2, TruCluster on HP Tru64 Unix.-Linux Administrator : RedHat Enterprise (RHEL), -Linux Cluster : Cluster solution with HP Blade (HP Serviceguard)-Disk Management: Raid 1+0, HP Tru64 Logical Storage Manager (LSM), Solaris Volume Manager (SVM), Linux LVM. Multipath.-IP Network: Router and Switch configuration

Antwerp Area, Belgium

Embedded in local teams during that 2-year position, I had the opportunity to work in English with Flamish people. "Start-up" environment (small virtual company).Integration and test Engineer on Signaling Gateway : ISUP to NGN protocols (Megaco,...)Installation and support for customers. (WorldCom)I enjoyed the multicultural aspect of my work during that thrilling "Internet years".

Nantes Area, France

Software development on legacy telecom Exchange (switching)*Technical Assistance in Mission at UKRTEL, National Ukrainian Operator in Kiev, for system upgrade and certification.*Technical Assistance in Mission for Cable&Wireless in Santa Lucia (West Indies), and in Santiago De Chile (Chili) for CTC: Technical Support during System Upgrade.*Know-how in technical support and customer facing.*Mission in Pakistan and Romania in Offshore Development Center as technical expert:=>Coordinator between sites during software development project=>Process Controler and Knowledge Manager=>Training preparation and teaching to Junior Engineers

Los Angeles, Usa

A six-month internship at the University of Southern California (USC), Los Angeles, in the Computer Vision Lab of IRIS (Institute for Robotics and Intelligent Systems). Designed a three-dimension matcher of building models for a Building Detector in aerial images. Environment: UNIX, CLOS (Object Oriented Lisp)

Varna, Bulgaria

Topics : Computer Science, Digital Communication, Finance.Subject : Designing a connection between a PC and Reuters 2000 Server.

Aberdeen, Scotland

Programing a micro-controler to measure moistureTopics : Digital Electronics, Computer Science, potatoes (!!!)

Graduate School, Dual Major Electronics And Computer Science, "Diplôme D'Ingénieur", Bac+5

Dut Mesures Physiques, Chemistry, Intrumentation, Physics, Mechanics, Dut, Bac+2