Airalo

eSIM & Device Engineer – Core Networks

Airalo

full-time

Posted on:

Location Type: Remote

Location: United Kingdom

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Tech Stack

Android

About the role

  • 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).
  • You are comfortable navigating EF structures (ICCID, IMSI, PLMN) and analyzing TLS-secured profile downloads.
  • You likely have 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.
Benefits
  • Health Insurance
  • work-from-anywhere stipend
  • annual wellness & learning credits
  • annual all-expenses-paid company retreat in a gorgeous destination & other benefits
Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools
eSIM Electrical ProfilesRemote SIM ProvisioningOver-the-Air (OTA) testingAPDU log analysisRemote File Management (RFM)profile size optimizationmobile device configurationcarrier settings managementTLS-secured profile downloadsApple Carrier Bundles
Soft Skills
problem-solvingcollaboration