Quality Assurance Engineer

Role overview A telecom-focused QA role on a remote-first eSIM and travel connectivity team, ensuring roaming services stay healthy across a global footprint. The position owns end-to-end testing for roaming partners, network changes, and service launches spanning Data, Voice, and SMS. Expectation is to make sure core network changes and roaming steering adjustments never silently degrade the existing footprint.

Responsibilities - Design and maintain IREG-based test campaigns for roaming partners, network changes, and service launches across Data, Voice, and SMS. - Manage the test SIM and eSIM fleet, remote test probes, campaign configuration, scheduling, execution, reporting, and coverage history. - Build repeatable test pipelines, integrate smoke and regression suites into CI/CD, and define clear release gates. - Define health KPIs, baselines, and thresholds; correlate synthetic results with production KPIs and real customer journeys, and turn findings into alerts and runbooks for Operations. - Design and run tests for geo-redundancy behavior, including site failover and failback, Diameter and GTP path recovery, session survival, and data consistency after switches, plus sustained-load and signalling-burst capacity validation. - Analyze PCAP, MAP/SS7, Diameter, GTP, and DNS traces alongside monitoring data to isolate failures, support root cause analysis, validate fixes, and strengthen regression coverage.

Requirements - Background in telecom QA, network testing, service assurance, or roaming validation. - Strong understanding of how LTE/EPC fits together, with the ability to find breakage in registration or session flows. - Wireshark as a first-stop tool for protocol analysis. - Comfort writing automation in Python (or a similar language) and keeping regression suites running in CI/CD. - Full-time remote work with strong written and spoken English for meetings and async collaboration.

Nice to have - Experience at a roaming hub, IPX provider, mobile operator, or MVNO, including partner interoperability testing. - Hands-on SIM box or remote testing probe management. - Exposure to 5G roaming and VoLTE roaming, including S8HR and SMS over IP. - Familiarity with HSS/HLR, PCRF, and OCS functions and how they show up in roaming failures. - Working knowledge of GSMA roaming procedures and documents, including IR.21, IR.24, IR.35, IR.38, and IR.92.

Benefits and work setup Full-time, permanent remote role on a fully remote-by-design global team. English is the day-to-day working language across meetings and async channels.