Telco Testing and Monitoring Engineer

This is a fully remote position, open to applicants in Ireland, +4 more countries.

📋 Description

• Take charge of and manage network testing and monitoring platforms, including SIGOS/Mobileum or comparable tools, which involve test SIM configuration, campaign setup, scheduling, reporting, and ongoing monitoring.

• Plan and implement automated, manual, and IREG testing across global operators for 2G, 3G, 4G/LTE, 5G NSA/SA, new roaming partners, IMSIs, interconnections, and service deployments.

• Conduct hands-on troubleshooting and root cause analysis utilizing signaling traces, packet captures, monitoring data, and protocols such as MAP/SS7, Diameter, GTP, DNS, and GRX/IPX.

• Assess roaming, eSIM, and multi-IMSI behavior, including IMSI selection, network selection, profile behavior, roaming accessibility, service availability, and readiness for go-live.

• Propel proactive network assurance and performance enhancement by creating alerts, maintaining testing documentation and operator history, assisting Carrier/Network Operations, and translating technical outcomes into insights for SLA evaluations and partner discussions.

• Collaborate with engineering teams, roaming partners, carriers, and technology vendors.

⛳️ Requirements

• Demonstrated experience in Mobile Telecommunications, preferably in Network Engineering, Roaming, NOC, Service Assurance, Testing, IREG, or Service Delivery.

• Solid hands-on proficiency with SIGOS/Mobileum or similar roaming testing platforms, including test SIM setup, test case management, automated campaigns, scheduling, and reporting.

• Practical knowledge of IREG and international roaming testing, including onboarding new operators, service acceptance, and validation across 3G, LTE, and 5G networks.

• Comprehensive understanding of mobile roaming architecture and eSIM technologies, including SM-DP+, eSIM profiles, multi-IMSI, and network selection behavior.

• Excellent troubleshooting abilities with the capability to analyze network traces, signaling messages, test outcomes, and monitoring data to detect service degradation and root causes.

• Experience in operating telecom monitoring/service assurance tools, along with strong communication skills to collaborate effectively with engineering teams, roaming partners, carriers, and technology vendors.

• Knowledge of GRX/IPX, VPLMN/HPLMN architectures, and GSMA roaming procedures, including IR.21, IR.24, IR.38, and IR.35.

• Proficient with Wireshark and signaling trace analysis for diagnosing roaming and network challenges.

• Familiarity with monitoring dashboards, KPI/alerting frameworks, carrier SLAs, roaming agreements, and operator performance management.

🏝️ Benefits

• Remote-first culture that emphasizes outcomes rather than hours worked.

• Flexible work schedule to promote a healthy work-life balance.

• Opportunities for growth within a collaborative, blameless environment that values ownership and continuous improvement.