Staff Engineer, ML Evaluation & Model Improvement

Reflection, a research lab, seeks to advance open and accessible intelligence. You will conduct rigorous comparative analyses, build evaluation systems, and develop frameworks that capture reasoning and alignment advances.

You will collaborate with pre-training, post-training, and applied teams to translate insights into model improvements. The role emphasizes high agency in a fast-paced startup environment, with the chance to push measurable boundaries and contribute to open foundational