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Many GenAI companies are building products around someone else’s model. This team is building its own. After developing an LLM from scratch, the company raised approximately 10B in its first funding round to scale its research team, GPU infrastructure, and global consumer product development. Led by the former CEO of a major Japanese consumer technology platform, the company combines serious model-building depth with proven experience turning technology into products used by the mass market. You will work on: Reasoning optimization for coding, mathematics, logic, and conversation Hallucination reduction and model safety LLM evaluation metrics and benchmarks Synthetic-data generation and filtering pipelines Distributed training with PyTorch, DeepSpeed, or FSDP Why consider it: Compensation starts from 15M, even for junior-level researchers Remote-first, with full remote work available from anywhere in Japan Stock options Strong computing resources and long-term R&D funding Direct impact on the quality of a global consumer AI product