Staff Mobile Core Signalling Engineer

Your Role

• Developing and maintaining Core Network services.
• Working with Diameter, SIGTRAN, SS7 and related signalling technologies.
• Supporting the onboarding of new connectivity partners and roaming integrations.
• Troubleshooting complex signalling and connectivity issues.
• Designing resilient, highly available services.
• Improving load balancing, rate limiting and traffic management capabilities.
• Driving cloud-native migration initiatives.
• Contributing to multi-region and disaster recovery designs.
• Analysing signalling incidents and performance bottlenecks.
• Developing overload protection and rate-limiting strategies.
• Improving observability, monitoring and operational readiness of network services.
• Reducing operational toil through automation.

Your Impact

• Reliable connectivity for IoT customers worldwide: Your work keeps signalling and roaming services available, fast and resilient, so customers' devices stay connected across networks.
• A scalable, cloud-native Core Network: You help move emnify's platform toward multi-region, disaster-resilient and automated operations.
• Faster incident resolution: Your analysis of signalling incidents and bottlenecks shortens recovery times and prevents repeat failures.
• Faster partner onboarding: Your expertise speeds up the integration of new connectivity partners and roaming relationships.
• Less operational toil: Automation and better observability free the team to focus on engineering improvements.

What We Expect

• Strong background in mobile core networks.
• Telecom protocol testing and debugging.
• Experience with telecom vendors and roaming partners.
• Deep understanding of Diameter, SIGTRAN, SS7, GSM/LTE core concepts and roaming architectures.
• Experience with HLR, HSS, SMSC, STP, DRA and related components.
• Experience developing and maintaining network services.
• Ability to troubleshoot complex signalling and connectivity issues.
• Experience with load balancing, rate limiting and overload protection.
• Experience with monitoring, observability and incident analysis.
• Interest in automation and reducing operational toil.

Nice to Have

• 5G Standalone Core experience.
• IoT connectivity experience.
• eSIM / SIM management platform experience.
• Experience with Kubernetes and cloud-native systems.
• Good AWS knowledge.