About The Role
Rex.zone is hiring Germany-based, bilingual (English/German) AI Generalist Trainers to support RLHF and large language model evaluation by ranking model outputs, performing QA evaluation, and writing clear rationales that improve training data quality and model performance over iterative training cycles.
Responsibilities
- Evaluate and rank model-generated responses for task requirements, content safety, and linguistic quality in English and German
- Perform QA evaluation on labeled data, verifying annotation guidelines compliance and correcting inconsistencies
- Write concise rationales explaining reasoning, tradeoffs, and failure modes to support reviewer validation
- Conduct prompt evaluation and comparative ranking for RLHF-style preference data and LLM evaluation
- Validate edge cases, flag ambiguity, and propose guideline clarifications to improve training data quality
- Apply content safety labeling when required and escalat policy-sensitive issues for review
- Track recurring errors, report insights, and provide structured feedback to drive model performance improvement
Basic Qualifications
- Must be based in Germany and able to work remotely within Germany
- Fluency in English and German (reading, writing, comprehension) with strong grammar and clarity
- Strong analytical skills and comfort with structured evaluation, ranking, and validation
- Excellent attention to detail and consistency when following annotation guidelines
- Ability to explain reasoning clearly and objectively when documenting decisions
- Reliable internet connection and ability to meet quality and throughput expectations
Preferred Qualifications
- Experience with data labeling, content review, QA evaluation, or annotation projects
- Familiarity with LLM evaluation, RLHF concepts, prompt evaluation, or model output ranking
- Experience applying content safety labeling or policy-based evaluations
- Self-driven and organized; comfortable working independently in a remote environment
Compensation And Schedule
This is a full-time remote role. Compensation is hourly and depends on skills and performance during onboarding and ongoing quality reviews.
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Germany-Based English & German AI Generalist Trainer 2026 May in Kiel Arbeitgeber: Rex.zone
Rex.zone ist ein hervorragender Arbeitgeber, der eine dynamische und unterstützende Arbeitsumgebung in Berlin bietet. Mit einem starken Fokus auf digitale Marketingstrategien und innovativen Technologien fördert das Unternehmen die berufliche Weiterentwicklung seiner Mitarbeiter durch kontinuierliche Schulungen und spannende Projekte. Die remote-freundliche Kultur ermöglicht es den Mitarbeitern, flexibel zu arbeiten und gleichzeitig Teil eines kreativen Teams zu sein, das sich leidenschaftlich für den Erfolg seiner Kampagnen einsetzt.
