CV/Mission d'Expert Windows Server 2012 freelance

Exemple de missions de Derzhitski,
Expert Windows Server 2012 habitant ?

• Converged Communication Architect/Exper

  • Societe General (La Defense, France
  2012 - 2013

  building and migrating of one of the biggest Cisco UCM clusters in Europe. CUCM 8.6 Megacluster sized for 29 000+ phones. Building of LLD for the new Megacluster, building of migration procedures for merging of both CUCM 6.1 clusters configuration. Performing Risk analysis , Feasibility and strategy analysis. Installation of pre-production platform. Installation of Telisca ecosystems and Service Pilot monitoring system, integration of the Megacluster with existing systems (VM, Federator network, PSTN, Gatekeeper).
  Results: CUCM 8.6 Megacluster and pre-production platform were delivered and integrated with all adjacent systems. Documentation deliverables were provided and approved by the customer (LLD, ATB, Migration Plan). Telisca and Service Pilot were successfully installed and integrated.

• Converged Communication Expert

  • SETEC Group (Paris, France)
  2012 - aujourd'hui

  integration and configuration of Cisco Unified Communication Manager 8.5, Cisco Unified Presence Server 8.5, Unity connection and Right Fax server. Implementation of presence services integrated with Microsoft office business suite, IM based on Jabber (Windows, MAC OS, Android and iOS) and CUC. Integration with teleconferencing provider G2J. Voice encryption and UC VPNs ,remote sites around the world and smartphones(mobile devices). The system is used by more than 1200 subscribers with 20% remote sites.
  Results: The project for delivering the core systems and integration was successfully completed. LLD and HLD documents were updated and provided as part of the deliverables. The system is currently in production.

• Converged Communication Expert/External Consultant

  • Ernst&Young Bulgaria
  2011 - aujourd'hui

  migration from Call Manager 4.1 and Unity to Cisco Unified Communication Manager 8.0 and Unity Connection. More than 250 active subscribers.
  Results: Successful migration of the subscribers to the new system. Successful migration of all external communication links – 2 VoIP providers (SIP and H323), 1 PSNT (ISDN PRI), 3 GSM Gateways.

• echnical manager– pilot

  • Bulgarian Supreme Judicial Council
  2011 - aujourd'hui

  installation of the first Cisco Telepresence solution for court hearings. Installation and configuration of Cisco Unified Communication Manager, voice gateways for VPN connection. Development of guidelines for using the system for court hearings.
  Results: The system was utilized in several cases with particular public interest. After the success of the pilot project 3 additional Cisco Telepresence systems has been acquired and installed in the distant court rooms in Bulgaria.

• Senior Converged Communications Engineer

  • MaxTelecom (Largest WiMax operator in Bulgaria
  2008 - aujourd'hui

  planning, installation and configuration of Cisco Unified Communication Manager, Contact Center Express and Cisco Unified E-Mail Interaction Manager for customer support centre, IVR scripting and CRM integration. Developed HLD and LLD design documents, handover and training.
  Results: Minimized time for handling customers calls. Better utilization of the agents working in the contact centre through outbound campaigns. The system has been up and functioning for 5 years so far.

• Senior Converged Communications Engineer

  • Comverse (NetCentrex SA) end customer DataOne Asia, Philippines
  2006 - aujourd'hui

  staging of NextGen carrier-grade softswitch platform in Paris, onsite installation and integration with local PLMN/PSTN providers. Integration with Cisco AS5400. Platform capacity was 2000 Centrex subscribers and 20 000 trunk subscribers, SIP protocol end-to-end (core protocol SIP), Voicemail, audio conferencing, IPCentrex services.
  Results: successful project completion, handover to support team and onsite training.

• Communications Engineer

  Comverse (NetCentrex SA) France, Paris
  2006 - aujourd'hui

  setting up a Reference installation platform to be used by the installation teams in the Asia region. Including installation and configuration of the latest packages provided by the R&D team (first SIP based core platform, pre-IMS), updating architecture documentation, troubleshooting and working closely with the R&D team on bug fixing.
  Results: Successful project completion and delivery of the reference installation packages before the deadline. The installation packages were then used for demo installation in Taiwan and platform installation in DataOne Asia.

• Senior Converged Communications Engineer

  • Mobiltel Bulgaria (Largest mobile operator in Bulgaria)
  2005 - 2011

  deployment of NextGen softswitch platform (Comverse, NetCentrex SA), telephony services provisioning (IPCentrex, Voicemail, VAS), billing integration, SS7 integration, customers provisioning, HLD and LLD documents. Migration of production platform with 1000+ subscribers from H323 to SIP core. Multivendor integrations with different IP PBX and voice gateways (Audicodes, Cisco, Polycom, Patton, Swissvoice, Nexstone, Nortel, Avaya, Siemens, Alcatel and others). Integration of the softswitch platform with the existing provisioning system.
  Results: The mobile operator is using the platform for providing fixed telephony service to business subscribers. Currently the platform is serving more than 20 000 active subscribers.

• Converged Communication Expert/Team leader

  • Ministry of Interior in Bulgaria
  aujourd'hui

  implementation of IPT platform for providing countrywide emergency number (112); upgrade and migration from Call Manager 4.1 to Cisco Unified Communication Manager 7.0 with 600+ active subscribers; Implementation of Cisco Unity Connection; PSTN and PBX integrations.
  Results: Project has been completed within 6 weeks including, HLD and LLD documents, migration of current subscribers and provisioning of addition 350, implementation of Cisco Unity Connection, migration of current PSTN links and integration of additional PBX. More than 1000 subscribers are using the platform as for now.

• Senior Converged Communications Engineer

  • TransTelecom (first Wimax operator in Bulgaria)
  aujourd'hui

  setting up from scratch a telecom service provider, implementation of NextGen softswitch platform (Comverse NetCentrex SA), provisioning of IPCentrex services, provisioning of IP Trunking services, integration with PSTN/PLMN and IP telephony carriers (SS7, H323, SIP), implementation of Session Border Controller, installation of VAS platform, integration with MIND CTI billing platform, VoIP and CTI integration with different PBX and IP-PBX vendors (Nortel, Cisco , Avaya, Siemens, Asterisk, SIPx, GnuGK), setting up Local Number Portability (LNP) service. Architecture planning , HLD and LLD documents , platform support.
  Results: One year after project acceptance, the platform was providing IPT services for 5 000+ subscribers.