Hess Jens

Core Network Engineer at SBB CFF FFS

Lausanne, Vaud, Switzerland

About

Senior Engineer with long term experience in mobile telecommunication industry. Specialized in Technical Support for Nokia mobile core network elements. Worked for numerous projects and countries in multinational teams. • Commissioning, integration and operation of CS core elements as MSS, MGW, TAS and BGW • Implementation of VoWiFi / (VoLTE) Services for different customers in Switzerland • Acceptance testing for Rel4 and VoWiFi projects • Project Management for core network implementation projects • Team Leader for core network engineers • Technical Support and operation of various Nokia core network products as DX HLR, SDM (HLR-FE and ProvGW), SGSN (DX), TAS (ATCA), BGW and MGW (ATCA) • Participation in 24/7 emergency on-call support (Call up and Call out)

Experience

  • Core Network Engineer at SBB CFF FFS
    Jul 2018 - Present · 8 yrs

    Engineering Bahnkommunikation for GSM-Rail

  • Core Network Engineer, Core Engineering at Salt Mobile
    Nov 2017 - Jun 2018 · 8 mos

    Mobile Core Engineering and Operation R4 Core Network modernization project from Nokia DX200 to Nokia ATCA HW platform

  • NSN - Nokia Solutions and Networks (24 yrs 10 mos)
    • Senior Customer Service Engineer
      Aug 2013 - Oct 2017 · 4 yrs 3 mos

      • VoLTE multi-vendor integration and testing for T-Mobile Austria • VoLTE acceptance and optimization for Proximus Belgium • VoWiFi Implementation and acceptance for Salt SA (former Orange CH). Responsible for Integration and acceptance of TAS and BGW. • GSM-R R4 core integration and testing for SBB Switzerland • Engineering and integration of 3G nodeB’s in the MSS core network for Orange CH • MGW SW release upgrades for Vodafone Germany for more than 10 sites

    • Senior CS Core Engineer
      1999 - Oct 2017 · 18 yrs 10 mos

      • HLR transformation from DX HLR to NG HLR for Orange CH. Responsible for data migration and acceptance testing. • Rel4 (MSS and MGW) implementation for Orange CH. Responsible for commissioning integration and acceptance of the new core network. • PS core project for SBB Schweiz. Responsible for SGSN commissioning, integration and acceptance. • SW release upgrades and HW expansion projects. Responsible for numerous SW release upgrades, HW upgrades and HW capacity expansion for MSS, MGW, SGSN and HLR • Technical support in the NSN care process with help desk support, technical case handling and emergency support duties • Launch support for Orange CH core network. Responsible for integration and acceptance • Team Leader for CS core engineers • Project Manager for Nokia Capability Development project • Integration for VoWiFi trial for Swisscom • Integration and acceptance of the Orange Mobile Number Portability Solution • Support for Nokia Russia in St Petersburg to get video telephony working for a presentation • Support for Nokia Philippines for a SW release upgrade project • Support for Nokia Austria for various projects

    • CS Core Senior Engineer
      1993 - Apr 1999 · 6 yrs 4 mos

      • Technical support for e-plus Germany. Responsible for core network SW and HW upgrades • Maintenance for Nokia Test Bed core elements and release testing for e-plus SW release • On-site support and HW expansion for Nokia Czech Republic • Release upgrade support for Nokia Hungary • Support for BSC SW upgrades in numerous sites and releases • Commissioning and integration for e-plus MSC and HLR in Frankfurt • On-site support for e-plus Frankfurt

  • Nachrichten Geräte Mechaniker at Triumph Adler
    Aug 1985 - Jun 1987 · 1 yr 11 mos