Germany-Based English & German AI Generalist Trainer (Remote, Full-Time) 2026 May

Rexzone is hiring Germany-based English & German AI Generalist Trainers to support RLHF, large language model evaluation, and training data quality initiatives by evaluating, ranking, and QA-checking model outputs to drive model performance improvement.

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About the Role

As a Germany-based English & German AI Generalist Trainer at Rexzone, you will evaluate and improve AI/LLM workflows by assessing model-generated outputs, applying annotation guidelines compliance, and producing clear rationales that support training data quality and model performance improvement. You will perform large language model evaluation tasks such as preference ranking, prompt evaluation, and QA evaluation across a variety of domains while following strict validation standards and content safety labeling requirements.

Responsibilities

Evaluate model-generated responses in English and German for accuracy, usefulness, and safety; Rank multiple outputs using RLHF-style preference criteria and provide defensible reasoning; Perform QA evaluation and validation checks to ensure training data quality and consistency; Apply annotation guidelines and maintain annotation guidelines compliance across tasks; Conduct prompt evaluation to identify failure modes and opportunities for model performance improvement; Label and review data (data labeling) including content safety labeling and policy-based decisions; Write concise rationales that explain rankings, edge cases, and trade-offs; Escalate ambiguous cases, propose guideline clarifications, and support continuous process improvement.

Basic Qualifications

Based in Germany and eligible to work as a remote contractor/employee as applicable; Fluency in German and English (reading and writing) with strong grammar and clarity; Strong analytical skills, structured reasoning, and comfort making comparative judgments; High attention to detail, consistency, and ability to follow detailed guidelines; Ability to work independently, manage time, and meet quality targets in a remote environment.

Preferred Qualifications

Prior experience with data labeling, annotation, content moderation, or QA evaluation; Familiarity with LLM evaluation, RLHF concepts, and preference ranking workflows; Experience writing rationales, adjudicating edge cases, and performing validation; Comfort working across multiple domains (general knowledge, customer support-style prompts, and content safety); Self-driven, proactive communicator who can identify process gaps and suggest improvements to annotation guidelines.

Compensation

USD $35–$40 per hour (Remote, Full-Time).

How to Apply

Apply through Rexzone with an up-to-date resume/CV highlighting bilingual English/German proficiency and any experience in evaluation, QA, data labeling, or large language model evaluation. Selected candidates may complete a short skills assessment focused on ranking, reasoning, and annotation guidelines compliance.

Frequently Asked Questions

  • Q: Is this role remote?

    Yes. This is a remote, full-time role for candidates based in Germany.

  • Q: What tasks will I do?

    You will evaluate and rank model-generated outputs, perform QA evaluation and validation, complete prompt evaluation, follow annotation guidelines compliance requirements, and write clear rationales to support training data quality and model performance improvement.

  • Q: Do I need AI experience?

    AI experience is helpful but not required. If you have strong analytical skills, attention to detail, and can follow guidelines consistently, Rexzone will provide task instructions and feedback to help you succeed.

  • Q: What languages are required?

    Fluency in both German and English is required, including reading and writing.

  • Q: What domains are covered?

    Tasks can span general knowledge, reasoning, writing quality, customer-support style interactions, and content safety labeling, all within large language model evaluation and RLHF-style ranking workflows.

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.

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