Roaming IREG Engineer

2 hours, 7 minutes ago
Full-time
Senior
Mobile Development
Airalo

Airalo

Airalo is the world's first eSIM store offering travelers access to eSIMs in 200+ countries & regions at affordable prices. With Airalo, travelers can manage their eSIMs, top up on the go, and enjoy pain-free connectivity while traveling. Say goodbye t...

Airlines
51-250
Founded 2019
$67M raised

Description

  • Lead planning and execution of GSMA IREG Stage 4 test cases for data, voice, and VoLTE roaming services.
  • Perform protocol-level analysis on SS7, Diameter, GTP, MAP, and related signaling traffic to diagnose interconnect issues.
  • Coordinate with Core Engineering to verify correct HSS/HLR, STP, and DRA configurations for roaming launches.
  • Manage remote testing probes and physical test SIM cards to simulate real-world roaming scenarios across 100+ countries.
  • Own end-to-end testing and launch readiness for new roaming partners.
  • Validate signaling, data throughput, and voice quality across international networks to ensure reliable service.
  • Work closely with international carriers and internal teams to resolve roaming and interconnect failures.

Requirements

  • Direct experience working at a Roaming Hub, IPX Provider, or Tier 1 MNO.
  • Proven track record of executing IR.24, IR.35, and IR.92 test suites from scratch.
  • Strong Wireshark and pcap analysis skills for MAP, Diameter, and GTP protocols.
  • Deep understanding of Steering of Roaming (SoR) logic and its impact on IREG test results.
  • Comprehensive understanding of SS7/SIGTRAN and Diameter routing architectures.
  • Experience with 5G roaming, including HTTP/2 signaling and SEPP, is preferred.
  • Knowledge of TADIG for billing validation is preferred.
  • Experience with roaming network testing and launch validation in a telecom environment.
  • Ability to work in a fully remote team supporting global operations.

Benefits

  • Remote work.
  • Generous PTO.
  • Wellness allowance.
  • Learning allowance.
  • Annual Airalo Away retreat.
  • Equal-opportunity employer with a commitment to diversity, equity, and inclusion.
  • Reasonable accommodations available for individuals with disabilities during the interview process.

Interested in this position?

Apply directly on the company website

Apply Now

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