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

23 hours, 45 minutes ago
Part-time
Senior
Software Development
Welo Global

Welo Global

Welo Global specializes in providing enterprise localization, AI training data, and multilingual content solutions, leveraging a portfolio of specialized global brands to meet diverse customer needs in the AI and language services industry.

Professional Services
Founded 1997

Description

  • Use Automatic Prompt Generation (APG) tools to create baseline prompts for complex parent-child template clusters.
  • Run and oversee Automated Prompt Optimization (APO), reviewing outputs and flagging deadlocks or performance plateaus.
  • Manually draft, test, and refine prompts for complex template architectures, anti-patterns, and edge cases.
  • Monitor shadowbot runs to ensure human-versus-LLM rating disagreements are generated and tracked.
  • Evaluate prompt versions against gold data and human-crowd baselines using F1, precision, and recall metrics.
  • Prepare technical launch-readiness justifications and Launch Certification Documentation.

Requirements

  • Native-level French fluency and fluent English.
  • Must be based in France.
  • Bachelor’s, Master’s, or Doctorate degree in Computer Science, Data Science, Computational Linguistics, HCI, Cognitive Science, or a related analytical field.
  • At least 4 years of experience as a Prompt Engineer.
  • Experience tuning LLMs for strict structured outputs and complex classification tasks.
  • Knowledge of chain-of-thought prompting and few-shot learning.
  • Proficiency in identifying error patterns, analyzing model performance, and using SQL or similar analytics tools.
  • Ability to quickly learn proprietary tools with minimal supervision.
  • Excellent written and verbal communication skills.
  • Familiarity with enterprise LLM interfaces such as Goose API, APO systems, AI model evaluation, data science, computational linguistics, software engineering, or semantics and logic (preferred).

Interested in this position?

Apply directly on the company website

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