RE
Germany-Based English & German AI Generalist Trainer (May 2026)
- Hiring from
- Germany
- Work type
- Remote
- Posted
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About The Role
As a Germany-based English & German AI Generalist Trainer at Rex.zone, you will evaluate and improve AI/LLM systems through RLHF-style feedback workflows. You will assess, rank, and QA model-generated responses in both German and English, document reasoning, and ensure annotation guidelines compliance to strengthen training data quality and enable model performance improvement. This is a remote, full-time role focused on large language model evaluation, prompt evaluation, and training data quality validation.
Key Responsibilities
Apply through Rex.zone with a brief summary of your bilingual (German/English) experience and any relevant evaluation, data labeling, or QA background.
Selected candidates may complete a short skills assessment focused on ranking, reasoning, and annotation guidelines compliance.
As a Germany-based English & German AI Generalist Trainer at Rex.zone, you will evaluate and improve AI/LLM systems through RLHF-style feedback workflows. You will assess, rank, and QA model-generated responses in both German and English, document reasoning, and ensure annotation guidelines compliance to strengthen training data quality and enable model performance improvement. This is a remote, full-time role focused on large language model evaluation, prompt evaluation, and training data quality validation.
Key Responsibilities
- Review, score, and rank model outputs across German and English datasets
- Write concise, evidence-based rationales explaining preferences and reasoning
- Execute QA evaluation to validate labels, resolve edge cases, and flag inconsistencies
- Follow annotation guidelines and maintain high training data quality
- Conduct prompt evaluation and content safety labeling when required
- Escalate ambiguous cases, propose guideline improvements, and support calibration for consistency
- Based in Germany (remote) and able to work as required for the role
- Fluent in German and English (reading, writing, and critical reasoning)
- Strong analytical skills and ability to compare answers and justify rankings
- Exceptional attention to detail and consistent guideline adherence
- Comfort with structured rubrics, QA checklists, and high-throughput evaluation queues
- Experience with data labeling, RLHF, prompt evaluation, or LLM evaluation
- Familiarity with LLM failure modes (hallucinations, instruction-following issues, safety/policy violations)
- Experience with calibration sessions and training data quality programs
- Self-driven time management in a remote environment
Apply through Rex.zone with a brief summary of your bilingual (German/English) experience and any relevant evaluation, data labeling, or QA background.
Selected candidates may complete a short skills assessment focused on ranking, reasoning, and annotation guidelines compliance.