Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based, bilingual (English/German) AI Generalist Trainers to support RLHF and large language model evaluation by ranking, validating, and QA-checking model outputs to strengthen training data quality and 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 reviewing model-generated responses, ranking alternatives, writing clear rationales, and applying annotation guidelines compliance. Your work directly supports RLHF, large language model evaluation, training data quality, and ongoing model performance improvement across multiple task types and domains.

Key Responsibilities

Perform large language model evaluation by assessing accuracy, helpfulness, tone, and policy adherence; rank multiple model outputs using defined rubrics; conduct QA evaluation and validation checks to ensure training data quality; write concise, evidence-based reasoning and rationales in English and German; follow annotation guidelines compliance and escalate unclear instructions; execute prompt evaluation and error categorization to support RLHF iterations; perform content safety labeling when required; track edge cases, annotate ambiguities, and suggest rubric improvements to improve consistency.

Basic Qualifications

Must be based in Germany; fluent in English and German (C1+ or equivalent) with strong writing skills in both languages; strong analytical skills with the ability to evaluate nuanced reasoning and compare alternatives; excellent attention to detail and consistency in applying rubrics; reliable internet connection and ability to work independently in a remote environment; comfort using web-based annotation tools and documenting decisions.

Preferred Qualifications

Prior experience in data labeling, prompt evaluation, QA evaluation, or content review; familiarity with RLHF concepts and LLM evaluation workflows; experience writing structured rationales and using annotation guidelines at scale; self-driven, organized, and able to maintain quality under throughput targets; interest in AI reliability, content safety labeling, and training data quality best practices.

Compensation

This is a full-time remote role. Pay is $35–$40 USD per hour, based on skills, task complexity, and quality metrics.

How to Apply

Apply to Rexzone with your resume/CV and a brief note describing your English/German writing experience and any background in evaluation, QA, or annotation. Qualified applicants may complete a short 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, and applicants must be based in Germany.

  • Q: What tasks will I do?

    You will perform large language model evaluation tasks such as evaluation, ranking, QA evaluation, validation, prompt evaluation, writing rationales, and occasional content safety labeling to improve training data quality and support RLHF.

  • Q: Do I need AI experience?

    AI experience is helpful but not required. We value strong analytical skills, attention to detail, and the ability to follow annotation guidelines compliance; training is provided for project-specific rubrics.

  • Q: What languages are required?

    Fluency in both English and German is required, with strong written communication in both languages.

  • Q: What domains are covered?

    Domains vary by project and may include general knowledge, customer support style writing, reasoning tasks, summarization, translation/localization checks, and policy-focused content, all aimed at model performance improvement.

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

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