Telco Testing and Monitoring Engineer

🔥 0 minutes ago

🌐 Ireland, United Kingdom, +3 more countries – Remote

🇮🇪 Ireland – Remote 🇬🇧 United Kingdom – Remote 🇭🇺 Hungary – Remote 🇵🇱 Poland – Remote 🇧🇬 Bulgaria – Remote

⏰ Full Time

🟡 Mid-level

🟠 Senior

👷🏻‍♀️ Engineer

👻 Ghost score 10%

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Holafly

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2017

✈️ Travel

📡 Telecommunications

👥 B2C

💰 $112.9k Seed Round - Holafly on 2019-06

Travel • Telecommunications • B2C

Holafly is a travel connectivity provider that sells eSIMs and prepaid international SIM cards to travelers, enabling mobile data access across multiple countries without relying on traditional roaming plans. It operates primarily through an online storefront and targets consumers such as tourists and digital nomads who need short-term, flexible mobile data while abroad.

📋 Description

• Own and operate network testing and monitoring platforms, including SIGOS/Mobileum or similar tools, covering test SIM setup, campaign configuration, scheduling, reporting, and continuous monitoring. • 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 MAP/SS7, Diameter, GTP, DNS, and GRX/IPX protocols. • 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. • Work with engineering teams, roaming partners, carriers, and technology vendors.

🎯 Requirements

• Proven experience in Mobile Telecommunications, ideally across Network Engineering, Roaming, NOC, Service Assurance, Testing, IREG, or Service Delivery. • Strong hands-on expertise with SIGOS/Mobileum or equivalent roaming testing platforms, including test SIM configuration, test cases, automated campaigns, scheduling, and reporting. • Practical experience with IREG and international roaming testing, including new operator onboarding, service acceptance, and validation across 3G, LTE, and 5G networks. • Good understanding of mobile roaming architecture and eSIM technologies, including SM-DP+, eSIM profiles, multi-IMSI, and network selection behaviour. • Strong troubleshooting skills with the ability to analyse network traces, signalling messages, test results, and monitoring data to identify service degradation and root causes. • Experience operating telecom monitoring/service assurance tools, combined with strong communication skills to work 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. • Experience with Wireshark and signalling trace analysis for troubleshooting roaming and network issues. • Familiarity with monitoring dashboards, KPI/alerting frameworks, carrier SLAs, roaming agreements and operator performance management.

🏖️ Benefits

• Remote-first culture with a focus on outcome over hours. • Flexible working schedule to support your work-life balance. • The opportunity to grow within a blameless, collaborative environment that values ownership and continuous improvement.