Fluent in business-level Japanese (reading and writing) and conversational English. System design skills with object-oriented data modelling, service-oriented architectures, and system abstraction. Performant, defect-free, maintainable code. Strong problem solver with a proactive mindset. Team player who can effectively coordinate with technical and non-technical stakeholders. Comfortable working heads-down or tag-teaming problems. Strong coding skills around Go, Java. Ability to debug issues or foresee and avoid problems. Experience with IDLs (e.g., protobuf), RPC frameworks (e.g., gRPC), cloud platforms (e.g., GCP), and relational databases (e.g., PostgreSQL).