Senior ML Engineer (AI Research/ Portability)

Nebius is recruiting a Senior ML Engineer (AI Research/ Portability) for remote work focused on AI, LLM, machine learning, Python, senior, Data, Engineering. We build and evaluate portable layers that preserve capability, context, identity, provenance, and user control across heterogeneous systems The successful candidate will design and build research prototypes and robust systems at the seams between models, providers, and agent runtimes The successful candidate will formulate research questions, develop evaluation methods, test ideas in realistic agent workflows, and turn promising results into reusable components