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.
This is a senior applied research opportunity focused on redefining how AI systems access, retrieve, and reason over information from the web. You will help build an agent-native search platform designed for machines rather than traditional human search experiences. The role combines cutting-edge research with hands-on system design and a strong expectation of delivering measurable impact in production. You will work on retrieval, ranking, query understanding, LLM grounding, and evaluation for complex multi-step agent workflows. Your work will operate under demanding requirements for relevance, reliability, latency, and cost at significant scale. With substantial ownership over research direction and technical architecture, you will help shape foundational capabilities for the next generation of AI systems.
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Accountabilities




Drive applied research and technical direction across retrieval, ranking, and agentic search systems.
Design and evolve multi-stage retrieval architectures covering query understanding, query rewriting, reranking, iterative retrieval, and result refinement.
Develop approaches that enable LLMs and AI agents to retrieve, evaluate, and reason over constantly changing web data in real time.
Design agent-native retrieval systems optimized for machine consumption and complex downstream AI workflows rather than traditional search-engine user experiences.
Build systems in which LLMs can iteratively plan, query, refine, evaluate, and reason over retrieved information.
Develop retrieval and ranking approaches capable of supporting multi-step, agent-driven workflows under real-world production constraints.
Define new evaluation frameworks, benchmarks, and metrics for agentic systems, recognizing that quality and correctness cannot be measured solely thro

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