Remote Global Core Network Engineer

Remote; San Francisco (CA); Remote; USD 120,000 - 180,000; Full time

Job summary

Airalo, the world's first eSIM store, seeks a telecom core network engineer to design the IP infrastructure of multi-site data centers and enable global connectivity for travelers. This fully remote role defines WAN/LAN strategies, leads configurations of DRAs, GTPs, GGSN/PGW, and coordinates direct roaming agreements with partners, interfacing with Airalo's Platform and Network Operations teams.

Ideal candidates have 3–5 years in core telecom, experience with Sigtran, Diameter, REST APIs, BGP,

Qualifications

• Bachelor's or higher in Engineering, Telecommunications, or equivalent experience.
• 3+ years in telecom core networks.
• Experience with GGSN/PGW, HLR/HSS and roaming.
• Strong communication in English (written and verbal).

Responsibilities

• Design IP infrastructure across multi-site data centers.
• Define WAN/LAN network strategy and configurations.
• Lead DRAs, GTPs, GGSN/PGW, SBCs, firewalls, and routers.
• Coordinate direct and sponsored roaming agreements.
• Interface between Core Network, Platform, and Network Operations teams.
• Support deployments, performance improvements, and trainings.

Skills

Core network design

GGSN/PGW/DPI

Roaming (HLR/HSS)

Diameter routing & GTP

BGP & REST API

Education

Technical Degree in Engineering or Telecommunications

Job description

Airalo, the world's first eSIM store, seeks a telecom core network engineer to design the IP infrastructure of multi-site data centers and enable global connectivity for travelers. This fully remote role defines WAN/LAN strategies, leads configurations of DRAs, GTPs, GGSN/PGW, and coordinates direct roaming agreements with partners, interfacing with Airalo's Platform and Network Operations teams.

Ideal candidates have 3–5 years in core telecom, experience with Sigtran, Diameter, REST APIs, BGP,