Preferred Networks
Tokyo or Remote in Japan | Full-time
hn · Tokyo or Remote in Japan
Jose has strong full-stack engineering credentials and demonstrated expertise in LLMs, real-time systems, and infrastructure scaling—directly relevant to LLM serving and optimization work. However, his background is primarily in AI product development and application-layer engineering rather than inference optimization, systems-level performance tuning, or hardware-aware software engineering. The roles appear to require deeper specialization in inference engines, low-level optimization, and potentially hardware-software co-design that aren't prominently demonstrated in his CV.
Hook: Your experience shipping real-time LLM systems at scale and optimizing model inference for production environments positions you well for optimizing our inference engine.
Missing: inference engine optimization, low-level performance tuning, hardware-aware systems programming, vLLM or similar inference framework expertise, deep learning systems optimization, GPU/accelerator-level profiling
Posting
Preferred Networks | Tokyo or Remote in Japan | Full-time | https://www.preferred.jp/en Preferred Networks is an AI company based in Tokyo working across the stack, from AI chips and computing infrastructure to LLMs and products. You may already know us indirectly if you've used software we've built, such as Optuna or CuPy (or Chainer, back in the day). We are designing in-house chips (MN-Core series: https://mn-core.com/) and training LLMs (PLaMo series: https://huggingface.co/pfnet), and our team is actively hiring for two roles related to these endeavors: - MN-Core LLM Serving Engine Engineer: Build software infrastructure to serve LLMs using our upcoming inference accelerator, MN-Core L1000. [Apply here: https://open.talentio.com/r/1/c/preferred/pages/121580] - LLM Inference Optimization Engineer: Improve the inference engine powering our API service and maintain PLaMo implementations in open source projects such as vLLM. [Apply here: https://open.talentio.com/r/1/c/preferred/pages/119173] Both roles require relocation to Japan. We are happy to provide visa and relocation support.