Quality Assurance Engineer, Roaming
Core
Guardian of global roaming experience, ensuring carrier-grade connectivity for travelers across 200+ countries by testing roaming scenarios and analyzing signaling traces.
Role type
End-to-end Regression Specialist (Quality Assurance)
Builds
Global Connectivity Platform for eSIM travelers
Domain
Telecommunications, Global Roaming, Mobile Networks (4G/5G)
Deliverable
production ML models | product features | dashboards & analysis | research | client delivery | infrastructure | physical/clinical work
Required skills
4G/5G Roaming architectures, Protocol Analysis (PCAP, Trace logs, APDU), eSIM lifecycle management, Root Cause Analysis (RCA), Steering of Roaming (SoR) understanding
Preferred skills
GSMA IREG standards knowledge, SoR platform logic, SIM box or remote testing probe management
Technologies
MAP, Diameter, VoLTE (S8HR), SMSoIP, IREG
Responsibilities
Execute comprehensive IREG-based testing (Data, Voice, SMS) for new roaming sponsors and direct partners; Design and maintain a rigorous regression suite to verify that core network changes or Steering of Roaming (SoR) adjustments do not negatively impact the existing global footprint; Lead the technical troubleshooting of roaming failures by analyzing signaling traces (MAP/Diameter) and validate the rollout of next-gen services like VoLTE (S8HR) and SMSoIP
Seniority
Individual Contributor, specialized technical role