Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based, bilingual (English/German) AI Generalist Trainers to perform RLHF-style ranking, large language model evaluation, and QA evaluation to improve training data quality and drive model performance improvement in production AI/LLM workflows.

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About the Role

As a Germany-based English & German AI Generalist Trainer at Rexzone, you will evaluate and rank model-generated outputs across tasks, write clear rationales, and validate results to support large language model evaluation. Your work directly improves training data quality through consistent judgments, annotation guidelines compliance, and structured feedback used for RLHF and prompt evaluation, enabling measurable model performance improvement.

Key Responsibilities

Perform large language model evaluation by assessing, comparing, and ranking AI responses; execute RLHF-style preference ranking and prompt evaluation with well-formed reasoning; conduct QA evaluation on labeled datasets, auditing for training data quality and annotation guidelines compliance; validate edge cases, ambiguity, and content safety labeling requirements, escalating issues when needed; write concise rationales in English and German to document decisions and support reviewer alignment; apply standardized rubrics for accuracy, helpfulness, harmlessness, and policy adherence; track errors and propose improvements to guidelines, checks, and validation workflows to improve model performance improvement outcomes.

Basic Qualifications

Based in Germany and able to work full-time remotely; fluency in both German and English (reading and writing) to complete bilingual evaluation and rationales; strong analytical skills with the ability to decompose prompts, detect logical gaps, and judge reasoning quality; high attention to detail and consistency to maintain training data quality; ability to follow annotation guidelines compliance requirements and handle sensitive content safety labeling decisions when applicable.

Preferred Qualifications

Prior experience with data labeling, prompt evaluation, QA evaluation, or annotation guidelines; familiarity with LLM evaluation, RLHF concepts, or rubric-based ranking; comfort working independently in a remote environment with strong time management; self-driven approach to quality, calibration, and continuous improvement; experience documenting validation findings and collaborating with reviewers to improve training data quality.

Compensation and Schedule

Pay is $35–$40 USD per hour (hourly). Full-time, remote role for candidates based in Germany.

How to Apply

Apply to Rexzone with a current CV and a short summary of your bilingual English/German experience, evaluation or QA work (if any), and availability. If selected, you will complete a structured assessment focused on ranking, reasoning, validation, and annotation guidelines compliance.

Frequently Asked Questions

  • Q: Is this role remote?

    Yes. This is a full-time remote role, and you must be based in Germany.

  • Q: What tasks will I do?

    You will perform large language model evaluation, including RLHF-style ranking of model outputs, prompt evaluation, QA evaluation, validation checks, content safety labeling when required, and writing rationales to support training data quality and model performance improvement.

  • 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 and calibration are provided.

  • Q: What languages are required?

    Fluency in both German and English is required, including strong reading and writing skills for bilingual evaluation and rationales.

  • Q: What domains are covered?

    Domains vary and may include general knowledge, reasoning, writing quality, instruction-following, and safety-focused scenarios. The goal is consistent evaluation and training data quality improvements for production AI/LLM 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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