Germany-Based English & German AI Generalist Trainer (Remote, Full-Time)

About The Role

Rex.zone is hiring Germany-based English/German AI Generalist Trainers to support RLHF and large language model evaluation by assessing, ranking, and validating model outputs to improve training data quality and drive model performance improvement.

Responsibilities

• Evaluate and rank model-generated outputs in English and German using defined rubrics and annotation guidelines
• Perform RLHF-style preference ranking and prompt evaluation to identify the best responses
• Conduct QA evaluation to ensure training data quality, consistency, and annotation guidelines compliance
• Write concise, evidence-based rationales explaining evaluation decisions
• Validate outputs for completeness, policy adherence, and content safety labeling requirements
• Flag ambiguous prompts, edge cases, and guideline gaps; propose clarifications
• Track errors, patterns, and failure modes that affect evaluation outcomes and model performance
  
  

Basic Qualifications

• Based in Germany and able to work remotely on a full-time schedule
• Fluent in German and English (reading, writing, and nuance in both languages)
• Strong analytical reasoning and attention to detail; consistent guideline compliance
• Comfortable working with structured workflows, task queues, and quality targets
• Able to handle sensitive or safety-related content in line with labeling policies
  
  

Preferred Qualifications

• Experience with data labeling, LLM evaluation, prompt evaluation, or QA evaluation
• Familiarity with RLHF concepts, preference ranking, and common LLM failure modes
• Self-driven and reliable in a remote environment
  
  

Compensation

$35–$40 USD per hour (hourly).

Feed salary range: $30–$50 USD per hour.

How To Apply

Apply with a short summary of your bilingual English/German experience, your location in Germany, and any relevant evaluation/QA/data labeling background.