Ismail Tozak available

Ismail Tozak

Technical Project Manager, Program Manager BSS, Management Consultant, Senior Consultant OSS/BSS

Profileimage by Ismail Tozak Technical Project Manager, Program Manager BSS, Management Consultant, Senior Consultant OSS/BSS from Wesseling
  • 50389 Wesseling Freelancer in
  • Graduation: University
  • Hourly-/Daily rates:
  • Languages: German (Native or Bilingual) | English (Limited professional) | Turkish (Limited professional)
  • Last update: 09.01.2021
CV - Ismail Tozak

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BSS,OSS, IoT, M2M, SIEM, GIS, Interfaces, network design, ITIL, JIRA / Confluence, HP Service Manager, Oracle, SID, eTOM
  • 03/2017 - 12/2019

    • Deutsche Telekom AG
  • NB-IoT Product Management
  • Responsible for the Narrowband-IoT (NB-IoT) Introduction &
    E2E Product Management.
    * Creation of NB-IoT Product Concept
    * Managed the technical readiness, integration and launch
    * Design complete process landscape and proof of concept
    with selected customers
    * Coordinated and managed activities across business and
    technical departments
    * Integration in the Enterprise Access Architecture

  • 01/2012 - 03/2017

    • Deutsche Telekom AG
  • Technical Project Manager
  • Project M2M - System Integration of the Comarch based M2M
    enabling platform into the complex Deutsche Telekom's NT
    and IT landscape. The platform is now serving national and
    international retail and wholesale M2M customers. Tasks
    * Setup and Refine Overall Program
    * Managed the technical readiness, integration and launch
    of the M2M platform
    * Coordinated and managed activities across business and
    technical departments
    * Managed vendor, led and coordinated workstreams
    * Preparation and conducting cutover
    * Managed the pilot customer phase
    * Customer Onboarding in the automotive sector BMW and

    Tasks after the Go Live:
    * Ensured system streamlining and Go Live stabilization
    * Set up and coordinated Task Force core team
    * Onboarding of Daimler AG

    * Managed the M2M part of global Daimler cutover
    * Escalation, risk and issue management
    * Communication management
    * Set up monitoring (systems, error handling) and reporting

  • 08/2009 - 05/2010

    • Vodafone Turkey
  • Program Manager BSS
  • Set up and implement the entire PMO including program
    organisation and processes (planning, reporting, risk & issue
    management, vendor management) for mission-critical BSS
    program. This included:

    * Designed and implemented organization, governance,
    tools, processes
    * Change and stakeholder management
    * Quality management, risk and issue management
    * Planning & coordination of End-to-End process test and
    friendly user test
    * Management of masterplan, monitoring of dependencies
    * Coaching sub-project leads and workstream leads
    * Technical Project Manager for the Campaign Management
    o System Integration with Legacy Systems
    o Setup Testing Team
    o Overall Management of the Cutover

  • 07/2007 - 05/2009

    • Türk Telekom A.S.
  • Management Consultant, Senior Consultant OSS/BSS
  • Telekom, Ankara as part of the Detecon team.

    BSS/OSS Transformation Program aimed to replace the
    legacy systems. Mission-critical Program project involving
    approx. 80 project staff overall and comprising 12
    * Led and coordinated PMO activities, i.e.
    o Responsible for conceptual design, development
    and implementation of PMO processes, tools and
    organization interfacing with vendor (NSN,
    o Responsible for planning, reporting, risk and issue
    o Managed and monitored program progress,
    milestone achievement, dependencies
    * Support Turk Telekom in the As-Is- Analysis
    * Requirement Analysis and Capturing
    * Mapping Legacy Systems with NGOSS TAM Model
    * Defining Cutover Strategy
    * Setup of User Acceptance Test Management Team
    o Definition Test Strategy
    o Definition of Test Procedures
    o Overall Management of the Test Process
    * Creating Concept for Demand Management
    * Definition of Interfaces CCBàIT-Operations

  • 02/2007 - 06/2007

    • T-Systems Business Services GmbH
  • Project Manager
  • Expansion of broad band network for public telephone
    * Support in network design and rollout
    * Maintenance process definition
    * Support of launch of new service

  • 10/2005 - 01/2007

    • T-Online International AG / T-Com
  • Technical Consultant / Operations
  • Project T-One - Fixed Mobile Convergence Telephony
    Product of Deutsche Telekom)
    * Billing, Tariffs and Product Conception T-One
    * Creation of bundled tariffs models and concepts for T-One
    * Formulation of broad band billing requirements
    * Creation of the call concept and call scenarios for T-One
    * Definition of the requirements for implementing the voice
    part on the NGN-O

  • 09/2002 - 06/2004

    • T-Online International AG / T-Com
  • Business Process Consultant
  • Rollout ITIL based SLM process
    Modeling and Conception of the Service Level Management
    Process in coordination with involved business departments
    * Conception of the Service Level Management (SLM)
    * Modeling and Conception of the Service Level
    Management Process in coordination with involved
    business departments
    * Formulation of the process model based on ITIL
    * Proof of Concept on the basis of selected mission critical
    business processes
    * Creation of roles and templates
    * Contribution to the development of the Support Process"
    Manage System Development" at T-Online International

  • 05/2001 - 08/2001

    • Lucent Technologies
  • Project Manager IN Tender
  • * Worked on the Intelligent Network (IN) tender for Türk
    * Developed the technical solution with experts in France
    * Created the overall implementation planning
    * Contact person and negotiation partner for technical/
    implementation issues
    * Created business cases with emphasis on revenue
    generating services

  • 01/2001 - 04/2001

    • Lucent Technologies
  • Technical Consultant
  • Customer Care and Billing (CCB) tender Aycell
    * Coordination within Lucent Technologies of all activities to
    elaborate a proposal for Billing & Customer Care
    submitted to Türk Telekom A.S.
    * Additionally in charge of business process concept
    development for operation and maintenance issues as part
    of the proposal
    * Contact person for Türk Telekom and involved in technical

  • 08/1999 - 04/2000

    • Debitel
  • Project Manager
  • Migration of debitel prepaid customers to IN platform
    * Review and gap analysis of the migration concept
    * Creating migration planning
    * Optimizing the migration duration
    * User acceptance testing and coordination of go live

  • 08/1998 - 07/1999

    • T-Mobile
  • Project Manager
  • Replacement of Hot Billing based OPSC and migration of
    vouchers to IN platform
    * Setting up the project team and defining the work streams
    * Creation of the RFI for the Voucher Management System
    * Assistance in selecting vendor, creation short list
    * Vendor Management
    * Adaptation of the changed business processes

  • 07/1997 - 07/1998

    • T-Mobile
  • Project Manager
  • Migration Prepaid System OPSC to IN
    * Management and coordination of subcontractors (Orga,
    HGS, Siemens)
    * Review design documents and migration concept
    * Test specification, conductance and evaluation as expert
    and coordinator
    * Coordination of parallel operation
    * Assistance in the transition phase and coordination the go
    live operation

    Summarized Consultancy Experience:
    Applications: * JIRA / Confluence
    * Convergys CM/OM
    * HP Service Manager
    * Oracle Metasolv Inventory Management Suite
    * Amdocs Mediation/Ensemble
    * Oblicore SLA Management

    Telecommunications: * Technologies und architectures for collection, mediation
    rating and billing
    * NGOSS principles, eTOM model, Tam, SID
    * Resource provisioning, configuration and fulfillment
    * Setting up RFP and RFI for Billing and IN platforms
    * GSM- and GPRS system architectures and interfaces

    Project Management: * Project and Risk Management
    * International Project Experience
    * Management of large scale data and platform migration
    * Team leadership and personnel management
    * Conceptual and strategic competence

    Techniques and * ITIL Certification
    Practices: * Software Development

    * Requirements Engineering
    * NGOSS Principles, eTOM, TNA, RA, TAM, SID