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

Freelance · onsite · Posted 14 Jun 2026

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The roleMore jobsSimilar
01

What you will do

About this role

Prompt Engineer responsible for the end-to-end technical migration workflow for transferring templates to LLM raters. The role involves using internal tools for prompt engineering techniques to maximize model performance.

Responsibilities:

  • Use Automatic Prompt Generation (APG) tools to create baseline prompts for complex parent-child template clusters
  • Execute and supervise the Automated Prompt Optimization (APO) tool, review outputs, and flag when APO reaches deadlocks or plateaus
  • Manually design, test, and refine prompts to navigate complex template architectures, overcome anti-patterns, and resolve edge cases
  • Monitor Shadowbot runs to ensure sufficient discrepancies (between human and LLM ratings)
  • Test prompt versions against golden data to continuously measure rater quality against human crowd baseline, with accuracy metrics such as F1 scores, precision, and recall
  • Prepare technical launch readiness justifications (Launch Certification Documentation)

Skills & experience

SeniorPrompt EngineeringLarge Language Models (LLMs)Automatic Prompt Generation (APG)Automated Prompt Optimization (APO)SQLData AnalysisChain-of-thoughtFew-shot learningGoose API
02

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