Job Description: Business Overview: The Marketing Division leads brand, creative, marketing, and membership as a cross-group organization with a mission to expand Rakuten Groups membership value and ecosystem of over 70 services. We believe that the mobile domain
Appealing Points: Build and optimize high-throughput, low-latency distributed systems supporting global multi-channel communication workloads. Work with modern technologies including Java/Golang, Kubernetes, microservices, CI/CD, API-first architecture, and cloud-native systems. Leverage LLM-based AI development tools such as Claude
Appealing Points: Lead proactive threat hunting to identify and mitigate advanced cyber threats across a cutting-edge mobile network environment. Work across advanced security domains including MITRE ATT&CK, 4G/5G, SS7, Diameter, GTP, Kubernetes, AWS/Azure/GCP, SIEM, UEBA, and