Member of Technical Staff - Pre-Training Evals Infra

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New York, NY OUR MISSION Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. We build open models that let anyone control their intelligence and help shape the future of AI. Our mission: make intelligence open and accessible to all. ABOUT THE ROLE You will build the evaluation infrastructure that researchers use to understand model capabilities, guide training decisions, and assess readiness for release. The role spans evaluation authoring, distributed execution, and results analysis, with a particular focus on pre-training. You…