Prompt Engineer in Spain - Remote LLM AI Role — Columbus
Traveler-Friendly Insight
Spain-Based Requirement — Limited Nomad Flexibility: This role explicitly requires candidates to be based in Spain, which significantly restricts location independence. While the job description does not mention mandatory office attendance, the Spain residency requirement means you must be legally residing in Spain — not merely passing through.
Timezone & Async Considerations: No fixed hours or synchronous meeting requirements are stated, which is a mild green flag for schedule flexibility. However, working with client internal tools and shadowbot monitoring likely implies some alignment with CET/CEST business hours. The role appears task-oriented rather than meeting-heavy, which could allow for flexible daily scheduling within Spain's timezone (UTC+1/+2).
Visa & Residency Options in Spain:
- Spain Digital Nomad Visa: If you are a non-EU national working remotely for a foreign company, Spain's Digital Nomad Visa (Startup Law) is a strong fit — but this role appears to be a client-side contract, so verify employment structure carefully.
- EU/EEA nationals can relocate to Spain with no visa required.
- Short-stay tourist visas are not suitable given the residency requirement.
No salary data is provided, making cost-of-living comparisons difficult. Spain itself — particularly cities like Madrid or Barcelona — is moderately priced compared to Northern Europe, making it a reasonable base for tech professionals.
We are seeking a Prompt Engineer to be responsible for the end-to-end technical migration workflow for transitioning templates to LLM autoraters. The role requires using the client's internal tools to leverage prompt engineering techniques to maximize model performance.
Responsibilities
- Utilize Automatic Prompt Generation (APG) tools to create baseline prompts for complex parent-child template clusters.
- Run and supervise Automated Prompt Optimization (APO) tool, review the outputs, and flag when the APO reaches deadlocks or plateaus.
- Manually draft, test, and refine prompts to navigate complex template architectures, overcome anti-patterns, and handle edge cases where tooling is lacking or broken. Solve edge-case scenarios by designing and refining manual prompts.
- Monitor shadowbot runs to ensure sufficient disagreements (between human and LLM ratings) are registered, generated, and tracked.
- Run prompt versions against established gold data to continuously measure autorater quality against the human crowd baseline, calculating accuracy metrics such as F1 scores, precision, and recall.
- Draft technical launch readiness justifications (Launch Certification Documentation) for final approval.
Requirements
- Language Skills: 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 a 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.
- Communication: Excellent verbal and written communication skills.
Optional / Preferred Skills
- Familiarity with enterprise-grade LLM interfaces like the Goose API.
- Experience in AI model evaluation, data science, computational linguistics, or software engineering.
- Hands-on experience with Automated Prompt Optimization (APO) systems or tuning workflows.
- Linguistic expertise, including an understanding of semantics and logic.
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