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

About The Role

Rex.zone is hiring Germany-based bilingual (English/German) AI Generalist Trainers to support RLHF and large language model evaluation. You will evaluate, rank, and QA model-generated responses, write clear rationales, and ensure annotation guidelines compliance to improve training data quality and model performance.

Key Responsibilities

• Evaluate and rank model outputs against rubrics
• Perform QA evaluation for consistency, safety, and instruction-following
• Write concise rationales explaining reasoning and tradeoffs
• Validate edge cases, elevate guideline gaps, and enforce annotation guidelines compliance
• Execute data labeling and prompt evaluation with high precision
• Run quality checks to improve training data quality
• Support content safety labeling and policy-based decisions
• Track errors and propose fixes that improve model performance
• Maintain clear bilingual (English/German) documentation

Basic Qualifications

• Based in Germany (remote, full-time)
• Fluent in English and German (C1+ or equivalent)
• Strong analytical skills and structured reasoning
• Excellent attention to detail and consistency on repeated evaluations
• Comfortable following rubrics and annotation guidelines
• Ability to work independently with reliable turnaround

Preferred Qualifications

• Experience in AI data labeling, RLHF, LLM evaluation, or QA evaluation
• Familiarity with helpfulness, harmlessness, factuality, and instruction-following
• Experience writing high-quality rationales and error analyses

Compensation

USD $30–$50 per hour (full-time, remote, Germany-based).