Senior Research Scientist (AI Architectures)

Location: Remote within Europe or the United Kingdom

Company

Nebius builds a full-stack AI cloud platform for data processing, model training, and production deployment, with research and development across cloud infrastructure and applied AI.

What you will do

• Formulate original research questions and translate them into rigorous experimental programs.
• Design and evaluate architectural changes for efficient, sparse, adaptive, and long-context models.
• Develop methods that reduce training or inference costs while preserving model quality.
• Collaborate with engineering teams to validate research ideas through efficient implementations.
• Publish research and contribute to open-source models, methods, and tools.
• Mentor researchers and help shape the architectures research direction.

Requirements

• PhD or equivalent research experience in machine learning.
• Deep knowledge of transformers, attention, language-model training, and modern model architectures.
• Strong publication record or comparable evidence of original research.
• Experience designing rigorous experiments and interpreting ambiguous results.
• Strong Python implementation skills and experience with a modern deep-learning framework.
• Experience training or evaluating models at scale, with the ability to lead research independently.

Nice to have

• Experience with long-context modeling, memory systems, sparse or linear attention, model distillation, distributed training, or efficient inference.

Culture & Benefits

• Flexible work with significant ownership and autonomy.
• Competitive compensation and career growth opportunities.
• Learning opportunities in an international research and engineering environment.
• Collaborative culture focused on impactful AI projects.
• Fast-moving environment with opportunities to shape the future of AI.
• Applicants must be authorized to work in the country where they apply and provide proof of employment eligibility.