Mobile Core Network Engineer – Zug, Switzerland

Telecom26 AG; Zug; Remote; CHF 120,000 - 150,000; Full time

Job summary

Telecom26 AG in Zug is seeking a Mobile Core Network Engineer to join our team full-time. You will support day-to-day operation and maintenance of the mobile core network, troubleshoot issues, and work with HSS/HLR, IMS/VoLTE, and roaming environments to keep services running smoothly.

The role requires a BS in engineering and 3–5 years in an MNO core network, with hands-on experience in signaling and multi-vendor environments.

Qualifications

• B.S. degree in engineering; telecom coursework desirable.
• 3–5 years in live MNO Core Network Operations & Maintenance.
• Hands-on experience in mobile core network operations and troubleshooting.
• Understanding of 3G/4G core architecture and signaling.
• Familiarity with HSS/HLR, DRA, STP, GTT/GT translation, SMSC, IMS/VoLTE, PGW, PCRF or roaming.
• Knowledge of SS7/MAP, Diameter, SMPP, SIP, and/or GTP.
• Strong analytical and troubleshooting skills.
• Experience in multi-vendor core network environments.
• IMS experience is a plus.

Responsibilities

• Support day-to-day operation and maintenance of mobile Core Network elements.
• Assist with monitoring, troubleshooting, and resolution of network and service issues.
• Support HSS/HLR, DRA, STP/SCCP, GTT/GT translations, SMSC, IMS/VoLTE, PGW, PCRF and International Roaming environments.
• Analyze alarms, logs, traces, and KPIs to identify potential network issues.
• Troubleshoot Data, voice/VoLTE, SMS, roaming, signaling issues under the guidance of senior engineers.
• Use packet captures and troubleshooting tools such as Wireshark to investigate signaling and service problems.
• Work with vendors and senior engineers on incident resolution, maintenance, and network changes.
• Maintain operational documentation and troubleshooting procedures.

Skills

Core network operations

3G/4G core architecture

Troubleshooting

Analytical thinking

MNO operations

Education

B.S. degree in engineering

Tools

Wireshark

Linux

Python

Bash

Job description

Telecom26 AG in Zug is seeking a Mobile Core Network Engineer to join our team full-time. You will support day-to-day operation and maintenance of the mobile core network, troubleshoot issues, and work with HSS/HLR, IMS/VoLTE, and roaming environments to keep services running smoothly.

The role requires a BS in engineering and 3–5 years in an MNO core network, with hands-on experience in signaling and multi-vendor environments.