Senior Core Network Engineer (HLR/HSS & SDM)

Jobgether • Switzerland

Remote

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AI Summary

We are seeking a Senior Core Network Engineer to design and optimize core network infrastructure for seamless global mobile connectivity. The ideal candidate will have extensive experience in telecom core network engineering with strong expertise in HLR, HSS, SDM, or related subscriber management technologies. The role involves collaborating with roaming partners, system integrators, and cross-functional engineering teams to shape the future of international connectivity solutions.

Key Highlights

Design and optimize core network infrastructure

Work on advanced HLR/HSS and subscriber data management systems

Collaborate with roaming partners and external system integrators

Key Responsibilities

Design, configure, and maintain HLR/HSS subscriber templates

Optimize roaming efficiency through advanced Steering of Roaming (SoR) implementations and sponsor roaming integrations

Lead the deployment and management of Full MVNO profiles

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Technical Skills Required

HLR HSS SDM MAP (SS7) Diameter protocols Wireshark Python Bash

Benefits & Perks

Competitive salary package

Fully remote work environment

Generous paid time off and work-life balance support

Wellness and professional development allowances

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Nice to Have

Knowledge of VoLTE roaming, SMSoIP, or 5G UDM/AUSF technologies

Familiarity with cloud-native network functions (CNF), containerized deployments, or telecom virtualization environments

Scripting and automation skills using Python, Bash, or similar technologies

Job Description

In this role, you will play a key part in designing and optimizing the core network infrastructure that enables seamless global mobile connectivity for millions of users. You will work on advanced HLR/HSS and subscriber data management systems, helping to ensure high-performance roaming experiences and scalable MVNO operations across international markets. This position offers the opportunity to tackle complex technical challenges in a highly collaborative and fully remote engineering environment. You will contribute to critical network innovations, improve roaming efficiency, and support large-scale telecom infrastructure projects with global impact. The role is ideal for a technically driven professional who enjoys working with cutting-edge mobile core technologies, solving signaling and roaming challenges, and driving operational excellence. You will collaborate with roaming partners, system integrators, and cross-functional engineering teams to shape the future of international connectivity solutions.

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