Heinrich Mainka

Berufserfahrung von Heinrich Mainka

• Bis heute 1 Jahr und 5 Monate, seit Feb. 2023

  Group Lead IT Major Incident Management

  Telefónica Germany GmbH & Co. OHG

• 3 Jahre, Feb. 2020 - Jan. 2023

  Service Transition Manager

  Telefónica Germany GmbH & Co. OHG

  Determining requirements and representing operations in tenders and contract negotiations with vendors; Creation of operational concepts and management of the transfer of both projects and new technologies into the operational processes and units; Assisting in the design of new working methods for the organisation.

• 7 Jahre und 1 Monat, Jan. 2013 - Jan. 2020

  Network specialist

  Telefónica o2 Germany GmbH & Co. OHG

  Operation of the Mobile IP Core, DCN; Specialist for customer-specific APN; Analysing and troubleshooting; Interface to the SOC and NOC; Certification: JNCIA & JNCIS-SP

• 4 Jahre und 10 Monate, März 2008 - Dez. 2012

  Support engineer

  Telefónica o2 Germany GmbH & Co. OHG

  Detection of faults in the mobile core area; Handling and solving technical faults or forwarding them to the back office

• 1 Jahr und 6 Monate, Sep. 2006 - Feb. 2008

  Mitarbeiter Business Service

  Telefónica o2 Germany GmbH & Co. OHG

  Detection of faults (cause research, remediation) and, if necessary, forwarding to 3rd level support

• 2 Jahre und 11 Monate, Sep. 2003 - Juli 2006

  Auszubildender

  Deutsche Telekom AG

  Azubi: Fachinformatiker FR Systemintegration