Walmart de México y Centroamérica
Principal Engineer – MVNO Network & Cloud Core (Telecom | 5G)
Job Description
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 (5G 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 ...