Remote Telecom Testing & Roaming Monitoring Engineer

Holafly; Dublin; On-site; EUR 70,000 - 100,000; Full time

Benefits offered by this job

Remote-first culture

Flexible working schedule

Blameless, collaborative environment

Job summary

Holafly, a high-growth scale-up, seeks a Telecommunications Testing & Monitoring Engineer to establish and operate the testing framework for global network connectivity. You will own automated and manual testing across 2G–5G, validate roaming, eSIM profiles, and multi-IMSI behaviour, and drive proactive performance improvements.

Based in Ireland, you will collaborate with engineering, roaming partners, and vendors to ensure go-live readiness and SLA adherence in a remote-first, outcome-driven

Qualifications

• Proven experience in Mobile Telecommunications across Network Engineering, Roaming, NOC, or Service Delivery.
• Hands-on expertise with SIGOS/Mobileum roaming testing platforms, test configurations, campaigns, scheduling and reporting.
• Experience with IREG and international roaming testing including operator onboarding and 3G/4G/5G validation.
• Knowledge of mobile roaming architecture, eSIM, SM-DP+, multi-IMSI, and network selection behavior.
• Strong troubleshooting to analyse traces, signalling messages, and monitoring data to identify root causes.

Responsibilities

• Own and operate network testing and monitoring platforms, including test SIM setup, campaign configuration, scheduling, reporting.
• Design and execute automated, manual, and IREG testing across global operators for 2G, 3G, 4G/LTE, 5G NSA/SA, new roaming partners, IMSIs, interconnections, and service launches.
• Perform hands-on troubleshooting and root cause analysis using signalling traces, packet captures, monitoring data, and protocols such as MAP/SS7, Diameter, GTP, DNS and GRX/IPX.
• Validate roaming, eSIM, and multi-IMSI behaviour, including IMSI selection, network selection, profile behaviour, roaming accessibility, service availability, and go-live readiness.
• Drive proactive network assurance and performance improvement by building alerts, maintaining testing documentation and operator history, supporting Carrier/Network Operations, and turning technical results into insights for SLA reviews and partner discussions.

Skills

Strong communication skills

Troubleshooting skills

Tools

SIGOS/Mobileum

Job description

Holafly, a high-growth scale-up, seeks a Telecommunications Testing & Monitoring Engineer to establish and operate the testing framework for global network connectivity. You will own automated and manual testing across 2G–5G, validate roaming, eSIM profiles, and multi-IMSI behaviour, and drive proactive performance improvements.

Based in Ireland, you will collaborate with engineering, roaming partners, and vendors to ensure go-live readiness and SLA adherence in a remote-first, outcome-driven