LLM Research Engineer
rinna
- Location
- Tokyo, Japan
- Level
- Mid
- Posted
- 17 Jul 2026
LLM algorithmMidRemoteActive
Original posting
Skills
- LLM
- Japanese
- Tokenization
- PyTorch
- Evaluation
Summary
rinna is hiring a research engineer in Tokyo to improve Japanese LLM tokenization, continued training, and evaluation. The company releases models and also supports product teams that wrap them. You will run data ablations, maintain a Japanese benchmark the team trusts, and write the short note that explains a regression. Remote work in Japan is possible for candidates who already know the stack. Requirements: practical LLM training or fine-tuning, PyTorch, and Japanese reading ability sufficient to audit generations.
Full description
rinna is hiring a research engineer in Tokyo to improve Japanese LLM tokenization, continued training, and evaluation. The company releases models and also supports product teams that wrap them.
You will run data ablations, maintain a Japanese benchmark the team trusts, and write the short note that explains a regression. Remote work in Japan is possible for candidates who already know the stack.
Requirements: practical LLM training or fine-tuning, PyTorch, and Japanese reading ability sufficient to audit generations.