Conversational AI Designer

October 12, 2026

Hybrid

Middle

Barcelona, Spain

Description

A digital product studio from Barcelona is looking for a Conversational AI Designer to craft, prototype, measure and improve conversational experiences. The role focuses on LLM-based, non-deterministic assistants and agents rather than scripted flows. The designer will partner with internal and external teams, including data teams, on prompt design, evaluation and quality frameworks.

Responsibilities

Design conversational experiences (assistants, agents) that are non-deterministic and built on LLMs
Identify and analyze use cases, diagramming them clearly for design, engineering and product teams
Run and evaluate tests on conversational agents, iterating on the experience based on results
Collaborate closely with data teams on prompt design and refinement
Define evaluators and quality frameworks to assess and continuously improve conversational performance
Ensure a coordinated, coherent experience across conversational design patterns

Requirements

Proven experience as a conversational designer working on non-deterministic experiences built on LLMs
Solid understanding of how LLMs work and how that shapes conversational design decisions
Experience identifying, analyzing and diagramming use cases for conversational products
Hands-on experience testing conversational agents and interpreting the results
Experience collaborating with data teams on prompt definition and iteration
Experience defining evaluators and frameworks to measure conversational quality

Conditions

Hybrid work from home/office system with a flexible time schedule
Macbook Pro 13" or similar
Your birthday as an extra paid vacation day
Social events and parties

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