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Esim & device engineer - core networks

· Job Posted February 13, 2026
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Requirements

  • professional experience in mobile device testing and Over-the-Air (OTA) configuration
  • professional background at a Tier 1 Carrier, leading MVNO, or eSIM Vendor (e.g., Thales, G+D, IDEMIA)
  • professional background in general software QA
  • professional background in web or backend engineering
  • experience managing Steering of Roaming (SoR) updates in a production environment
  • experience managing VoLTE & VoWiFi settings in a production environment
  • experience managing GSMA Network Settings Exchange (NSX) in a production environment
  • experience managing Multi-IMSI or localized breakout orchestration in a production environment
  • comfortable working in a remote environment
  • based in Spain or UK

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