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SAN R&D Business Solutions

4G/5G Core Network Engineer

SAN R&D Business Solutions

Join our team as a 4G/5G Core Network Engineer focusing on telecom API integrations. Collaborate with vendors to enable API-driven integration across 5G core network functions.

Posted 4/23/2026contractRemote • 🇺🇸 United StatesMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
NFS

About the role

Key responsibilities & impact
  • Work with 4G/5G core network products from vendors like Nokia, Ericsson, and Samsung
  • Analyze and interpret 3GPP specifications and telecom standards
  • Design and implement API integrations across network functions (NFs)
  • Work with REST APIs (OpenAPI/Swagger) for telecom integrations
  • Enable integration of LF CAMARA APIs with network functions such as: - NEF / SCEF - PCF (Policy Control Function) - UDR (Unified Data Repository)
  • Collaborate with vendors to identify gaps and define API roadmaps
  • Support implementation of GSMA Open Gateway architectures
  • Understand and contribute to call flows and connection flows across: - IMS (IP Multimedia Subsystem) - SBA (Service-Based Architecture) - OSS/BSS systems (TM Forum standards)

Requirements

What you’ll need
  • 5+ years of experience in telecom APIs and network function integration
  • Strong experience in 4G/5G Core Network architecture
  • Hands-on experience with telecom vendors: Nokia / Ericsson / Samsung
  • Strong understanding of: - 3GPP standards (5G core, NEF, SCEF, etc.) - LF CAMARA APIs - GSMA Open Gateway architecture
  • Experience with REST APIs (OpenAPI / Swagger)
  • Knowledge of network function interfaces and integrations
  • Understanding of IMS, SBA, OSS/BSS call flows
  • Strong analytical skills to interpret technical specifications

Benefits

Comp & perks
  • No H1B & OPT 📊 Check your resume score for this job Improve your chances of getting an interview by checking your resume score before you apply. Check Resume Score

ATS Keywords

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Hard Skills & Tools
API integrationsREST APIsOpenAPISwagger4G Core Network architecture5G Core Network architecturetelecom standardsnetwork function interfacesanalytical skillscall flows
Soft Skills
collaborationproblem-solving