Applied Scientist/Research Engineer, LLM Training Data

The Applied Scientist/Research Engineer, LLM Training Data role at Propio focuses on owning the data strategy, curation pipelines, and evaluation datasets that power multilingual AI systems. This hands-on technical position involves managing the full AI data lifecycle, from acquisition and annotation to quality control and post-training data, to directly improve LLM performance. The role requires building scalable data pipelines and designing high-quality annotation processes to close performance gaps through targeted data improvements.