Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based English/German AI Generalist Trainers to support RLHF and large language model evaluation by ranking, QA-checking, and validating model outputs. You will apply annotation guidelines compliance to improve training data quality and drive model performance improvement across real-world AI/LLM workflows.

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About the Role

As a Germany-based, remote AI Generalist Trainer at Rexzone, you will evaluate and improve AI systems by assessing model-generated responses in English and German. Your work supports RLHF, large language model evaluation, and training data quality by performing structured ranking, QA evaluation, and rationale writing that enables measurable model performance improvement.

Responsibilities

Perform large language model evaluation by reviewing, comparing, and ranking model outputs; execute QA evaluation for accuracy, consistency, and policy alignment; write clear rationales explaining reasoning behind rankings and corrections; validate labeled data against annotation guidelines compliance and project rubrics; identify edge cases, ambiguity, and failure modes to improve training data quality; apply prompt evaluation and content safety labeling where required; track issues and provide feedback to improve workflows and model performance improvement; maintain productivity and quality targets while working independently in a remote setting.

Basic Qualifications

Must be based in Germany; fluent in English and German (reading, writing, and comprehension); strong analytical skills with the ability to evaluate nuanced content and follow rubrics; exceptional attention to detail with consistent annotation guidelines compliance; ability to explain reasoning clearly in written rationales; reliable internet and ability to work full-time remotely.

Preferred Qualifications

Prior experience in data labeling, QA evaluation, or content review; familiarity with RLHF, prompt evaluation, and LLM evaluation concepts; comfort working with ambiguous tasks and iterating with feedback; self-driven, organized, and able to meet quality standards with minimal supervision; experience with content safety labeling and training data quality best practices.

Compensation

USD $35–$40 per hour (hourly). Exact rate is based on skills, performance on assessments, and project requirements.

How to Apply

Apply through Rexzone with an up-to-date resume/CV highlighting bilingual English/German expertise and any experience in evaluation, QA, data labeling, or AI/LLM workflows. Qualified applicants may be asked to complete a short evaluation task focused on ranking, reasoning, and validation.

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 ranking model responses, running QA evaluation checks, validating labels for training data quality, applying annotation guidelines compliance, and writing rationales that explain your reasoning.

  • Q: Do I need AI experience?

    AI experience is helpful but not required. Rexzone provides task guidelines; success depends on strong analytical skills, attention to detail, and consistent evaluation quality.

  • Q: What languages are required?

    Fluency in both English and German is required because you will evaluate and write content in both languages.

  • Q: What domains are covered?

    Domains vary by project and may include general knowledge, reasoning, helpfulness, instruction-following, safety, and content quality—supporting RLHF and model performance improvement.

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

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