About the Role

We are looking for a Agentic AI Engineer to join our growing AI Factory and contribute to the design, development and scalling of intelligent agent systems. You will work at the intersection of applied AI and production engineering, building agentic architectures that deliver measurable business value across complex, multi-stakeholder environments.
This is a hands-on technical role for someone who thrives in ambiguity, moves fast between experimentation and production, and understands and communicates AI concepts clearly to both engineering teams and business stakeholders.

What You Will Do

Agentic Systems Development
- Contribute to the design and implementation of multi-agent systems, RAG pipelines and tool-augmented workflows.
- Work with frameworks such as LangChain and LangGraph to build and iterate on conversational and agentic workflows.
- Help integrate agent systems with enterprise data sources, APIs and external tools.

Observability, Testing & Reliability
- Instrument agent workflows using observability platforms such as Opik to trace execution,



monitor tool calls and surface failure patterns.
- Write and maintain tests for agentic components: prompt regression tests, tool-level unit tests and integration tests for multi-step workflows.
- Participate in automated evaluation pipelines, including LLM-as-a-judge assessments and contribute to red-teaming exercises to identify unexpected agent behaviours.
- Learn to connect production traces to evaluation suites using real failures to improve system robustness iteratively.

Learning & Growth
- Stay curious about the evolving LLM and agent ecosystem: new frameworks, evaluation techniques, failure patterns, etc.
- Document your work clearly: architectures, experiments, findings and open questions.
- Contribute to cross-functional meetings by identifying collaboration opportunities and articulating the purpose and progress of your work.

What We Are Looking For

Required
- Proven hands-on experie

📌 Agentic AI Practicioner (España)
🏢 Telefónica S. A.
📍 España