Core Network Lead

Stack

Responsibilities

• ▹Lead, mentor, and manage a team of around five engineers and QA specialists, owning sprint planning, task allocation, and technical reviews across concurrent global rollout streams
• ▹Establish engineering best practices, integration templates, automated testing strategy, and technical handover standards
• ▹Lead technical integrations with host mobile network operators globally, across signalling, packet core, voice, and messaging
• ▹Own the architecture and setup of Full MVNO core components, from the subscriber database (HSS/HLR) through packet core, signalling routing, and messaging platforms
• ▹Direct implementation and troubleshooting across the signalling stack, including Diameter and SS7
• ▹Own end-to-end service readiness across data, voice, and SMS, covering session management, policy enforcement, data routing, VoLTE, legacy circuit-switched voice, and international interconnects
• ▹Design and validate mobile number portability routing in line with country-specific regulatory frameworks
• ▹Own regulatory compliance for each market, covering lawful interception (ETSI ES 201 671 / TS 102 232, HI1/HI2/HI3) and emergency service routing such as e112, 911, and 999
• ▹Partner with QA on integration test plans, stress testing, and acceptance testing, then drive Operational Readiness Reviews and clean, documented handovers to the 24/7 Run team

Requirements

• ▹5+ years hands-on experience in mobile core networks and Full MVNO integrations
• ▹2+ years leading a team of engineers and/or QA specialists in an agile or delivery-focused environment
• ▹Strong working knowledge of both packet core and voice core, including the subscriber database (HSS/HLR), policy and charging, VoLTE, and legacy circuit-switched voice
• ▹Expertise across the signalling stack, including Diameter and SS7

Soft skills

About the company

Airalo is the world's first eSIM store, helping travelers access affordable mobile data in 200+ countries and regions. The company has a team of 400+ people across 60+ countries and operates fully remote by design.