Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based, remote, full-time AI Generalist Trainers to support RLHF and large language model evaluation by ranking model outputs, writing clear rationales, and enforcing training data quality through annotation guidelines compliance and QA evaluation to drive model performance improvement.

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About the Role

As an AI Generalist Trainer at Rexzone, you will evaluate and improve AI/LLM workflows by assessing model-generated responses in English and German. You will perform RLHF-style ranking, prompt evaluation, and LLM evaluation tasks, apply annotation guidelines compliance, and complete QA evaluation to maintain training data quality and enable model performance improvement. This is a fully remote, full-time role for candidates based in Germany.

Key Responsibilities

Perform large language model evaluation by reviewing prompts and model outputs; rank and compare responses using RLHF-style criteria; write concise reasoning and rationales that justify rankings and decisions; validate and QA completed work to ensure training data quality and consistency; follow annotation guidelines compliance and update feedback when guidelines change; conduct prompt evaluation and error categorization to identify failure patterns; apply content safety labeling where required and flag policy-sensitive content; verify bilingual (English/German) correctness, tone, and factual consistency; escalate ambiguous cases and document edge-case decisions for guideline alignment; support calibration sessions to improve inter-annotator agreement and reduce variance.

Basic Qualifications

Must be based in Germany and authorized to work remotely from Germany; fluent in English and German (professional reading and writing); strong analytical skills with the ability to compare alternatives and justify decisions; high attention to detail and consistency across repetitive evaluation tasks; ability to follow complex instructions and maintain annotation guidelines compliance; reliable availability for full-time, remote work and comfort working independently.

Preferred Qualifications

Prior experience with data labeling, QA evaluation, or content review; familiarity with LLM evaluation, RLHF concepts, or prompt evaluation; experience writing structured rationales or applying rubrics for ranking tasks; understanding of training data quality and how it impacts model performance improvement; self-driven, organized, and comfortable managing throughput targets in a remote environment.

Compensation

USD $35–$40 per hour (hourly). Pay depends on role alignment, assessment results, and ongoing quality metrics.

How to Apply

Apply to Rexzone with a resume/CV highlighting bilingual (English/German) writing skills, analytical evaluation experience, and any exposure to data labeling, RLHF, or large language model evaluation. Selected candidates may complete a short skills assessment focused on ranking, reasoning, validation, and annotation guidelines compliance.

Frequently Asked Questions

  • Q: Is this role remote?

    Yes. It 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 including ranking and comparing model outputs (RLHF-style), prompt evaluation, writing rationales, validation, and QA evaluation to protect training data quality.

  • Q: Do I need AI experience?

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

  • Q: What languages are required?

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

  • Q: What domains are covered?

    Domains vary and may include general knowledge, reasoning, writing quality, instruction-following, and content safety labeling, all aimed at model performance improvement.

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.

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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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