Senior Research Scientist (Architectures Research)

About the role

Nebius is seeking a Senior Research Scientist to join their AI R&D team to conduct frontier applied research. The role focuses on developing new model architectures and methods to improve how models attend, remember, reason, and adapt, aiming for higher efficiency and lower computational costs.

Responsibilities

• Formulate original research questions and translate them into rigorous experimental programs
• Design and evaluate architectural changes at meaningful model scales
• Develop methods that preserve model quality while reducing training or inference cost
• Collaborate with engineering teams to validate ideas in efficient implementations
• Publish research and contribute to open-source models, methods, and tools
• Mentor researchers and help shape the stream's research direction

Required skills

• ML
• Transformers
• Attention mechanisms
• Language-model training
• Python
• Deep-learning frameworks

Nice to have

• Long-context modeling
• Memory systems
• Sparse attention
• Linear attention
• Model distillation
• Distributed training
• Efficient inference

Qualifications

• PhD in machine learning
• Equivalent research experience in machine learning

Benefits

• Competitive compensation
• Career growth and learning opportunities
• Flexibility and ownership
• Collaborative and innovative culture
• Opportunity to work on impactful AI projects
• International environment

About the Company

Nebius is building a full-stack AI cloud platform that supports developers and enterprises from data and model training through to production deployment. Listed on Nasdaq and headquartered in Amsterdam, the company has a global footprint with R&D hubs across Europe, the UK, North America and Israel.