Project Lion - Senior Prompt Engineer - Spain (Remote, Part-Time)

About this job

Native fluency in Spanish and fluent in English. Location: Must be based in Spain. Education: Bachelor’s, Master’s, or Doctorate degree in Computer Science, Data Science, Computational Linguistics, Human-Computer Interaction (HCI), Cognitive Science, or a related analytical field. Prompt Engineering & AI Expertise: At least 4 years' experience as Prompt Engineer. Proven experience tuning Large Language Models (LLMs) for strict, structured outputs, complex classification tasks, and familiarity with chain-of-thought and few-shot learning. Data Analysis: Strong proficiency in identifying error patterns, analyzing model performance, and using SQL or other data analytics tools. Technical Agility: Ability to quickly learn and master proprietary tools with minimal supervision.…

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Engineer salaries in Spain

Based on 79 postings that disclose pay.

Estimated from advertised pay across our sources — indicative gross annual figures, not an offer.

Most-requested skills in Spain

Based on 248 Spain vacancies that list requirements, these are the skills employers ask for most often.

• MATLAB21% of postings
• AutoCAD19% of postings
• Project Management17% of postings
• Lean13% of postings
• SAP12% of postings
• CAD11% of postings
• Quality Assurance10% of postings
• CATIA7% of postings

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