Mobile Core Network Engineer
Listed on 2026-11-05
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IT/Tech
Telecoms Engineering -
Engineering
Telecoms Engineering
Telecom
26 delivers mobile services built for a borderless world. Our culture emphasizes innovation, collaboration, and rewards success. We strive for diversity and encourage each other to solve problems in creative ways, take on new responsibilities, extend our experiences and turn the impossible into possible. Our commitment to you is that we will grow together.
Telecom
26 has an immediate need for a Mobile Core Network Engineer to join our world-class team.
Mobile Core Network Engineer, 100% in Zug
Key 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.
Requirements:
B.S. degree in engineering discipline. Additional coursework in telecommunications related areas desirable.
Have 3-5 years in Operations & Maintenance experience in a live MNO Core Network focusing on one or more of the following areas:
Hands-on experience in mobile Core Network operations, maintenance, and troubleshooting.
Understanding of 3G/4G Core Network architecture and signaling.
Familiarity with one or more of HSS/HLR, DRA, STP, GTT/GT Translation, SMSC, IMS/VoLTE, PGW, PCRF or International Roaming.
Basic understanding of SS7/MAP, Diameter, SMPP, SIP, and/or GTP.
Good analytical and troubleshooting skills.
Preferred:
Experience working in a live MNO or telecommunications environment.
Hands-on experience with Wireshark, packet analysis, Linux, Python, or Bash.
Exposure to multi-vendor Core Network environments.
IMS experience is a plus.
Personality/Character:
Highly motivated. Willing to work hard and be rewarded for it.
Must be organized and won’t stop until the job is “solved forever”.
Attitude and aptitude are key. These traits trump all others.
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