Germany-Based English & German AI Generalist Trainer 2026 May - #2734225

About The Role

Rex.zone is hiring Germany-based AI Generalist Trainers to support AI/LLM workflows through RLHF, large language model evaluation, and training data quality improvements. You will evaluate, rank, and QA model outputs in English and German, write clear rationales, and follow annotation guidelines compliance to drive model performance improvement.

Key Responsibilities

• Evaluate and rank model-generated outputs in English and German using task-specific rubrics
• Perform QA evaluation to validate accuracy, completeness, and policy alignment
• Write concise rationales explaining reasoning and ranking decisions
• Validate labeled data and ensure annotation guidelines compliance
• Review edge cases, flag ambiguity, and propose guideline clarifications
• Conduct prompt evaluation and response evaluation for safety, helpfulness, and factuality
• Complete content safety labeling when required and document decisions for auditability
  
  

Basic Qualifications

• Must be based in Germany and eligible to work remotely
• Fluent in German and English (written and spoken)
• Strong analytical skills; able to detect subtle errors and evaluate reasoning quality
• Exceptional attention to detail and consistency following rubrics and guidelines
• Ability to manage time independently and meet quality/throughput expectations
  
  

Preferred Qualifications

• Experience in AI data labeling, LLM evaluation, RLHF, prompt evaluation, or QA evaluation
• Familiarity with LLM behaviors (hallucinations, instruction following, safety constraints)
• Experience writing clear justifications across varied content domains
  
  

Compensation

USD $30–$50 per hour (base pay), depending on skills and performance during onboarding and calibration.

How To Apply

Apply with your resume/CV and a brief note confirming Germany-based location and English/German fluency.