Principal engineer - mvno network & cloud core (telecom | 5g)

Description
At Walmart, we are transforming connectivity in Mexico through our digital ecosystem. We are looking for a
Principal Engineer
to lead the architecture and evolution of our
MVNO platform
, ensuring a robust, scalable operation ready for the future of telecommunications ( 5 G and cloud-native
).
This role will be responsible for strengthening internal mobile core capabilities, reducing dependency on external vendors, and driving strategic technical decisions with direct business impact.
Key Responsibilities Design and optimize the
mobile core architecture
, including signaling flows (Diameter, GTP, SIP, SS7) Ensure the proper operation of
charging and policy systems (OCS / PCRF / PCF)
to secure revenue and network control Lead the transition toward
cloud-native architectures
(Kubernetes, containers, CNFs) Define technical integration standards with
network partners (MNO, IPX/GRX, vendors) Ensure network readiness for
5 G Standal...