Lead Large-Scale RL & Mid-Training Infra Engineer

Peano AI is seeking a Founding Large-Scale Mid-Training/RL Infrastructure Engineer to design, run, and scale our in-house training stack. You will work with thousands of GPUs and TPU accelerators to optimize pretraining and RL-based methods for large language models, impacting core products and future roadmap.

This role is deeply technical, with responsibilities spanning data pipelines, sharding, checkpointing, and accelerator-aware scheduling.