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, large language model evaluation, and training data quality improvements by assessing, ranking, and validating model outputs with clear rationales and annotation guidelines compliance.

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About the Role

As a Germany-based English & German AI Generalist Trainer at Rexzone, you will evaluate and improve large language model outputs across real-world tasks. You will apply RLHF-style preference ranking, prompt evaluation, and QA evaluation to drive training data quality and model performance improvement. You will follow annotation guidelines compliance requirements, document decisions with strong reasoning, and help maintain consistent, safe, and reliable training datasets.

Key Responsibilities

Evaluate and rank model-generated outputs in English and German using RLHF-style preference signals. Perform LLM evaluation and prompt evaluation against defined rubrics, including reasoning quality, completeness, and factuality checks. Write concise rationales that explain ranking decisions and support large language model evaluation. Execute QA evaluation and validation audits to ensure training data quality and annotation guidelines compliance. Identify edge cases, ambiguity, and policy risks; perform content safety labeling when required. Apply data labeling standards consistently and escalate unclear cases with proposed guideline clarifications. Track errors and patterns, propose improvements, and contribute to model performance improvement through feedback loops. Maintain high throughput while preserving attention to detail and consistent judgment across tasks.

Basic Qualifications

Based in Germany and authorized to work remotely from Germany. Fluent in both English and German (reading, writing, and comprehension). Strong analytical skills with the ability to compare alternatives and justify decisions using clear reasoning. High attention to detail and ability to follow annotation guidelines compliance standards consistently. Comfortable working with web-based labeling tools and structured evaluation rubrics.

Preferred Qualifications

Prior experience in AI data labeling, LLM evaluation, RLHF, prompt evaluation, QA evaluation, or content moderation workflows. Familiarity with common LLM failure modes (hallucinations, instruction-following issues, safety/policy violations). Self-driven and reliable in a fully remote environment, with strong time management and ownership. Experience writing clear rationales and applying consistent evaluation criteria under ambiguity.

Compensation and Work Setup

This is a full-time, remote role for candidates based in Germany. Compensation is $35–$40 USD per hour, depending on assessment performance and task alignment. You will receive onboarding materials, evaluation rubrics, and ongoing calibration to support consistent training data quality and model performance improvement.

How to Apply

Apply to Rexzone with your resume/CV and a brief note confirming you are based in Germany and fluent in English and German. If selected, you will complete a short qualification assessment focused on large language model evaluation, ranking, and annotation guidelines compliance.

Frequently Asked Questions

  • Q: Is this role remote?

    Yes. The role is remote, but you must be based in Germany.

  • Q: What tasks will I do?

    You will evaluate, rank, and QA model-generated outputs, write rationales, perform validation checks, and follow annotation guidelines compliance to improve training data quality and model performance improvement.

  • Q: Do I need AI experience?

    AI experience is helpful but not required. We provide onboarding and rubrics; strong analytical skills, careful reasoning, and attention to detail are essential.

  • Q: What languages are required?

    Fluency in both English and German is required for bilingual evaluation and writing tasks.

  • Q: What domains are covered?

    Tasks can span general knowledge, writing quality, instruction following, reasoning, factuality, and content safety labeling within large language model evaluation 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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