Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based, bilingual (English/German) AI Generalist Trainers to support AI/LLM workflows through RLHF-style evaluation, data labeling, prompt evaluation, and QA evaluation. You will assess, rank, and validate model outputs with clear rationales to strengthen training data quality, drive annotation guidelines compliance, and enable model performance improvement through large language model evaluation.

Job Image

About the Role

As a Germany-based English & German AI Generalist Trainer at Rexzone, you will evaluate and improve AI systems by reviewing model-generated responses, ranking alternatives, and writing concise reasoning. Your work directly supports RLHF, training data quality initiatives, and large language model evaluation across bilingual use cases. You will follow annotation guidelines compliance standards, apply content safety labeling where needed, and perform validation and QA evaluation to ensure reliable, high-quality training signals for model performance improvement.

Responsibilities

Perform large language model evaluation by assessing helpfulness, accuracy, and safety of outputs; Rank multiple model responses and provide clear, evidence-based reasoning; Execute QA evaluation to detect errors, inconsistencies, and guideline violations; Validate annotations for annotation guidelines compliance and escalate edge cases; Conduct prompt evaluation and refine task understanding to improve evaluation consistency; Apply data labeling and content safety labeling when tasks require policy-based classification; Support training data quality by identifying ambiguity, documenting patterns, and suggesting process improvements; Maintain high throughput while preserving attention to detail and traceable decision-making.

Basic Qualifications

Based in Germany and authorized to work as required for remote engagement; Fluent in German and English (written and reading comprehension required for nuanced evaluation); Strong analytical skills with the ability to compare outputs, spot logical gaps, and justify rankings; Exceptional attention to detail and consistency when applying annotation guidelines; Comfortable working with web-based labeling/evaluation tools and structured rubrics; Ability to write concise rationales and perform validation and QA checks.

Preferred Qualifications

Prior experience in AI data annotation, data labeling, or QA evaluation; Familiarity with RLHF concepts, prompt evaluation, and LLM evaluation methodologies; Experience with content safety labeling or policy-driven classification; Self-driven, reliable, and able to manage tasks independently in a remote environment; Interest in iterative model performance improvement and continuous training data quality enhancement.

Compensation

Pay range: $35–$40 USD per hour, dependent on assessment performance, task complexity, and quality metrics.

How to Apply

Apply through Rexzone with your updated resume/CV and a brief summary of bilingual English/German experience. Candidates may be asked to complete an evaluation exercise focused on ranking, reasoning, and annotation guidelines compliance.

Frequently Asked Questions

  • Q: Is this role remote?

    Yes. This is a remote, full-time role, and you must be based in Germany.

  • Q: What tasks will I do?

    You will perform large language model evaluation tasks such as evaluating and ranking model outputs, writing rationales, running validation and QA evaluation checks, and completing prompt evaluation and data labeling when required.

  • Q: Do I need AI experience?

    AI experience is preferred but not required. Strong analytical skills, attention to detail, and the ability to follow annotation guidelines compliance standards are essential.

  • Q: What languages are required?

    Fluency in both German and English is required for bilingual evaluation and training data quality work.

  • Q: What domains are covered?

    Tasks may cover general knowledge, writing quality, instruction following, reasoning, and content safety labeling, all aimed at model performance improvement through RLHF-style feedback.

230+Domains Covered
120K+PhD, Specialist, Experts Onboarded
50+Countries Represented

Industry-Leading Compensation

We believe exceptional intelligence deserves exceptional pay. Our platform consistently offers rates above the industry average, rewarding experts for their true value and real impact on frontier AI. Here, your expertise isn't just appreciated - it's properly compensated.

Work Remotely, Work Freely

No office. No commute. No constraints. Our fully remote workflow gives experts complete flexibility to work at their own pace, from any country, any time zone. You focus on meaningful tasks - we handle the rest.

Respect at the Core of Everything

AI trainers are the heart of our company. We treat every expert with trust, humanity, and genuine appreciation. From personalized support to transparent communication, we build long-term relationships rooted in respect and care.

Ready to Shape the Future of AI Data Operations?

Apply Now.