Senior ML Engineer (AI Research/ Portability)

Nebius is seeking a Senior ML Engineer for their AI Research team focused on portability in intelligent agent systems. You will design and build research prototypes and robust systems that ensure reliable functionality across changing models, providers, and environments. This role involves formulating research questions, developing evaluation methods, and collaborating with cross-functional teams to apply findings in practice.

• Design and build research prototypes for AI portability
• Develop portable layers for agent systems
• Formulate research questions and evaluation methods
• Collaborate with research, infrastructure, and engineering teams
• Work on model routing, provider portability, and agent interoperability
• Ensure reliable functionality across heterogeneous systems