This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff / Principal Applied AI Researcher (Agentic Search) based in Spain.
Join a fast-growing team building an agent-native search platform designed specifically for AI systems.
Shape how intelligent agents discover, retrieve, evaluate, and reason over real-time web information.
Lead applied AI research across retrieval, ranking, grounding, and multi-step agentic workflows.
Design systems that operate over constantly changing, unstructured data at significant scale.
Balance relevance, latency, reliability, and cost while supporting high-throughput production workloads.
Define new evaluation approaches for agentic systems where traditional search metrics are no longer sufficient.
Work closely with engineering and product teams to turn research ideas into measurable production impact.
Accountabilities

Drive applied AI research and technical direction across retrieval and ranking systems for agent-native search.




Design and evolve multi-stage retrieval architectures, including query understanding, query rewriting, reranking, and iterative retrieval.
Develop approaches for grounding LLMs in real-time web data while maintaining quality, scalability, and reliability.
Build and refine systems where LLMs can plan, query, evaluate, refine, and reason over retrieved information across multi-step workflows.
Define new evaluation frameworks, metrics, and experimentation methodologies for agentic systems, recognizing that effectiveness cannot be measured solely through traditional click-based metrics.
Lead experimentation with modern retrieval technologies, including embeddings, hybrid search, reranking, and related approaches, and transition successful methods into production.
Analyze and manage trade-offs between relevance, latency, reliability, and infrastructure cost at scale.
Partner closely with engineering teams to deploy AI and retrieval system

📌 Staff / Principal Applied AI Researcher (Agentic Search) (Madrid)
🏢 Jobgether
📍 Madrid