Staff Applied AI Researcher (Agentic Search)

Amsterdam, Netherlands; London, United Kingdom; Remote - Europe; Zurich, Switzerland. Posted 3 months ago

The role

You will drive applied research and technical direction for retrieval and ranking systems. You will design agent-native search systems that handle low-latency single-hop search and complex deep search tasks.

What you will do

Drive applied research and technical direction across retrieval and ranking systems
Design and evolve multi-stage retrieval architectures
Lead experimentation on modern retrieval approaches and bring them into production
Develop methods for grounding LLMs in real-time web data at scale
Partner with the evaluation team to define new metrics for agentic systems
Analyze trade-offs across relevance, latency, and cost
Mentor researchers and engineers and help raise the technical bar of the team

Required qualifications

8+ years of experience in applied AI, ML, or software engineering
Proven track record of shipping ML or AI systems to production at scale
Deep experience with search, retrieval, ranking or building RAG-based assistants
Strong understanding of modern deep learning, especially transformers and embeddings
Experience with LLM-integrated or knowledge-intensive systems
Experience designing evaluation frameworks and metrics for ML systems
Strong programming skills in Python
Top-tier publications ( ICLR , ICML , NeurIPS, AAAI , EMNLP , ACL )
Ability to operate in a fast-moving, product-driven environment with high ownership and autonomy

Nice to have

Background in agentic AI systems (agents, tool use, autonomous workflows)
Experience with RL post-training of LLMs or VLMs

Benefits

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

Before you apply

Applicants must be authorized to work in the country in which they apply
Will be required to provide proof of employment eligibility as a condition of hire

About the company

Nebius is building a full-stack AI cloud platform that supports developers and enterprises. The company is headquartered in Amsterdam and has a global footprint with R&D hubs.