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

3 months, 1 week ago
Freelance
Senior
Data Science and Analytics
Welocalize

Welocalize

Welocalize provides translation and localization services to help businesses reach global audiences with precision and efficiency.

Professional Services
1K-5K
Founded 1997
$34M raised

Description

  • Lead the end-to-end technical migration workflow for transitioning templates to LLM autoraters.
  • Use internal prompt engineering tools to maximize model performance.
  • Create baseline prompts for complex parent-child template clusters using Automatic Prompt Generation (APG) tools.
  • Run and supervise Automated Prompt Optimization (APO) workflows and identify deadlocks or plateaus.
  • Manually draft, test, and refine prompts for complex template architectures and edge cases.
  • Troubleshoot anti-patterns and cases where tooling is lacking or broken.
  • Monitor shadowbot runs to ensure disagreements between human and LLM ratings are generated and tracked.
  • Run prompt versions against gold data to measure autorater quality against the human crowd baseline.
  • Calculate evaluation metrics such as F1 score, precision, and recall.
  • Draft technical launch readiness justifications and Launch Certification Documentation.

Requirements

  • Must be based in Italy.
  • Native fluency in Italian and fluent English.
  • 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.
  • At least 4 years of experience as a Prompt Engineer.
  • Proven experience tuning LLMs for strict, structured outputs and complex classification tasks.
  • Familiarity with chain-of-thought and few-shot learning approaches.
  • Strong ability to identify error patterns and analyze model performance.
  • Experience using SQL or other data analytics tools.
  • Ability to quickly learn and master proprietary tools with minimal supervision.
  • Excellent verbal and written communication skills.
  • Familiarity with enterprise-grade LLM interfaces such as the Goose API (preferred).
  • Experience in AI model evaluation, data science, computational linguistics, or software engineering (preferred).
  • Hands-on experience with Automated Prompt Optimization (APO) systems or tuning workflows (preferred).
  • Linguistic expertise, including an understanding of semantics and logic (preferred).

Interested in this position?

Apply directly on the company website

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