SAN R&D Business Solutions is seeking a highly skilled 4G/5G Core Network Expert with strong experience in telecom APIs and network function integration. The ideal candidate will work closely with telecom vendors and internal teams to enable API-driven integration across 5G core network functions, aligned with industry standards.
Responsibilities:
- 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)
- Provide technical guidance on API exposure and network capabilities
Requirements:
- 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.)
- Strong understanding of: LF CAMARA APIs
- Strong understanding of: 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
- Experience working with API exposure layers in telecom
- Familiarity with TM Forum frameworks
- Experience working with vendor roadmap alignment and integration gaps
- Strong analytical skills to interpret technical specifications