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Prompt Engineer (LLMs & AI Evaluation)

Bilbao, PV, es💼 Full-time🗓 2026-08-31 → 2026-09-25

Core

Senior Prompt Engineer designing, refining, and evaluating advanced prompts for Generative AI models to optimize business interactions and model selection.

Role type

Senior IC Prompt Engineer (LLMs & AI Evaluation)

Builds

Production prompt solutions and evaluation frameworks for Generative AI

Domain

Generative AI / Large Language Models (LLMs)

Deliverable

production ML models

Required skills

Prompt Engineering, LLM evaluation, Python (advanced), few-shot prompting, Chain of Thought Prompting, Structured Prompting, A/B testing, script automation

Preferred skills

Experience with Generative AI projects, Agile environments, collaboration with business units

Technologies

Python, LLMs

Responsibilities

Design and optimize prompts for business use cases, refine existing prompts for precision and quality, collaborate with functional teams to translate business needs into AI solutions, analyze results from different LLMs, define evaluation methodologies, conduct A/B tests of prompts, evaluate LLMs using standardized prompts, document findings and best practices, automate testing and evaluations via scripts, participate in international sessions in English

Seniority

Senior, hands-on IC

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