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Senior Core Network Engineer

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Airalo

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Location:
Spain; United Kingdom

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Contract Type:
Not provided

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Salary:

Not provided

Job Responsibility:

Leading the design and expansion of our Packet Core

Requirements:

  • At least 3 years in a hands-on engineering or architectural capacity in one of the following environments: Tier 1 Carrier / Mobile Network Operator (MNO)
  • Major Network Equipment Provider (NEP)
  • MVNO / MVNE
  • Primary responsibility for High-Level Design (HLD) or Low-Level Design (LLD) in one or more of: DNS Hierarchy: Designing S-NAPTR records for MME/SGSN node discovery (PGW/SGW/UPF)
  • IP Strategy: Managing ASN (Autonomous System Numbers) and BGP peering for internet/roaming connectivity
  • Subscriber Mapping: Defining HSS/UDM profiles, including QoS, AMBR, and APN subscriptions
  • Capacity Planning: Dimensioning EPC/5GC nodes to handle specific data growth projections
  • Roaming Architecture: Designing IPX/GRX connectivity and bi-lateral roaming agreements
  • Comfortable working in a remote environment
  • Based in Spain or UK

Additional Information:

Job Posted:
January 22, 2026

Employment Type:
Fulltime
Work Type:
Remote work
Job Link Share:

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