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Airalo Logo Airalo · IT - Software Development

eSIM & Device Engineer - Core Networks

Employment contract · Job Posted February 13, 2026
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Job Description

The eSIM & Device Engineer will join our Core Networks Engineering team. They will be a dedicated specialist focused on Device setting management, driving our mission toward global connectivity!

Job Responsibility

  • Design and validate eSIM Electrical Profiles (MVNO/Roaming) following GSMA SGP.22 standards
  • Rigorously test the Local Profile Assistant (LPA) behavior on the latest flagships (iPhone 16, Samsung S24, Pixel 9) to ensure flawless Remote SIM Provisioning
  • Plan and execute Over-the-Air (OTA) campaigns to update eUICC file systems and steering logic for devices already deployed globally
  • Use tools like COMPRION or UL SIMtester to analyze APDU logs and debug communication failures in Remote File Management (RFM)
  • Verify Steering of Roaming (SoR) logic on global testbeds, ensuring our users always land on the fastest partner network
  • Minimize profile sizes to guarantee fast downloads over 3G, 4G, and 5G network conditions

Requirements

  • 3+ years in mobile device configuration, OTA testing, and managing carrier settings (VoLTE, VoWiFi, APNs)
  • Deep knowledge of Apple Carrier Bundles and Android network settings (GSMA NSX)
  • Comfortable navigating EF structures (ICCID, IMSI, PLMN) and analyzing TLS-secured profile downloads
  • Experience working at a Tier 1 Carrier, an MVNO, or a top-tier eSIM vendor (G+D, Thales, IDEMIA)
  • Familiarity with Subscription Management orchestration and a "problem-solver" mindset for niche global hardware
  • Fluent English is essential for collaborating across our 50+ country remote team

Nice to have

  • Remote testing (e.g. Segron, Mobilium) experience
  • Experience with OTA systems e.g. Thales
  • Knowledge of mobile network call flows (signalling) for 4G and 5G
  • Scripting languages (e.g. python)

What we offer

  • Health Insurance
  • work-from-anywhere stipend
  • annual wellness & learning credits
  • annual all-expenses-paid company retreat in a gorgeous destination & other benefits
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