Quality Assurance Engineer

This is a fully remote position, open to applicants in United Kingdom, +1 more country.

📋 Description

• Design and oversee IREG-based testing campaigns for roaming partners, network modifications, and service rollouts across Data, Voice, and SMS.

• Manage the test SIM and eSIM inventory, remote testing probes, campaign setup, scheduling, execution, reporting, and coverage history.

• Develop repeatable testing pipelines and incorporate smoke and regression test suites into CI/CD processes.

• Establish clear release criteria for core network modifications and guide Roaming adjustments.

• Define KPIs, baselines, and thresholds to assess service health.

• Correlate synthetic testing outcomes with production KPIs and genuine customer experiences.

• Transform findings into alerts and operational runbooks for the Operations team.

• Design and execute geo-redundancy tests, including site failover/failback, Diameter and GTP path recovery, session continuity, and data consistency post-switch.

• Validate the core platform's capacity under sustained loads and signaling surges.

• Analyze PCAP, MAP/SS7, Diameter, GTP, and DNS traces in conjunction with monitoring data.

• Identify failures, assist in root cause analysis, validate solutions, and enhance regression coverage.

⛳️ Requirements

• Proven experience in telecom QA, network testing, service assurance, or roaming validation.

• Understanding of LTE/EPC architecture with troubleshooting skills for registration or session flows.

• Proficiency in using Wireshark.

• Capability to write automation scripts in Python or a comparable programming language.

• Experience maintaining regression suites within CI/CD frameworks.

• Background at a roaming hub, IPX provider, mobile operator, or MVNO, including partner interoperability testing (preferred but not required).

• Practical experience with SIM box or remote testing probe management (preferred but not required).

• Familiarity with 5G roaming and VoLTE roaming, including S8HR and SMS over IP (preferred but not required).

• Knowledge of HSS/HLR, PCRF, and OCS functions (preferred but not required).

• Working knowledge of GSMA roaming procedures and documentation, such as IR.21, IR.24, IR.35, IR.38, and IR.92 (preferred but not required).

• Comfortable communicating in English during meetings and in asynchronous settings.

🏝️ Benefits

• Fully remote work arrangement.

• Full-time, permanent employment contract.

• English as the primary language for meetings and asynchronous communication.

• Background checks may be required with prior consent, in accordance with applicable laws.

• An equal-opportunity employer dedicated to diversity, equity, and inclusion.

• Reasonable accommodations available upon request for individuals with disabilities throughout the interview process.