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World’s first eSIM store that gives you access to eSIMs for 200+ countries worldwide at affordable prices.
Senior Core Network Solution Architect
Location
Spain
Posted
67 days ago
Salary
0
Seniority
Senior
Job Description
Senior Core Network Solution Architect
Airalo
• Own the HLD and LLD for Core Network services, ensuring seamless integration between the Packet Core (EPC/5GC) and IMS domains. • Lead the technical rollout of VoLTE Roaming (S8HR) and SMSoIP strategies, ensuring high-quality voice and messaging services across diverse roaming partners. • Design and optimise data session flows, including Local Breakout and Home Routed architectures to minimise latency for global users. • Lead technical discussions with IPX/GRX providers and Equipment Vendors to secure the best architectural paths for our traffic. • Act as the Subject Matter Expert for the transition from 4G to 5G Standalone (SA), focusing on the deployment of the Service-Based Architecture (SBA).
Job Requirements
- Extensive experience in Core Network architecture within a Tier 1 Carrier, MVNO, or major vendor environment.
- Deep understanding of the IMS (IP Multimedia Subsystem) architecture and how it interacts with the EPC/5GC for VoLTE and SMS services.
- Expert-level knowledge of SIP, Diameter, and GTP signalling. You should be comfortable architecting the signalling paths that facilitate global roaming.
- Strong grasp of IPX/GRX connectivity and the BGP/DNS logic (S-NAPTR) required for global network discovery.
- Ability to lead "Acceptance Testing" (ATP) and technical workshops with external stakeholders to ensure designs are implemented to spec.
Benefits
- remote work
- generous PTO
- wellness and learning allowances
- annual Airalo Away retreat
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