Germany-Based English & German AI Generalist Trainer 2026 May

Rexzone is hiring Germany-based, bilingual (English/German) AI Generalist Trainers to support large language model evaluation through RLHF-style ranking, prompt evaluation, and QA evaluation 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 outputs, ranking responses, and writing clear rationales. Your work directly impacts training data quality, annotation guidelines compliance, and model performance improvement through large language model evaluation and targeted QA evaluation.

Key Responsibilities

Evaluate model-generated answers in English and German for correctness, helpfulness, and safety; rank multiple outputs using RLHF-style preference scoring and prompt evaluation criteria; perform QA evaluation and validation checks to ensure training data quality and annotation guidelines compliance; write concise reasoning and rationales that justify rankings and highlight errors; label and categorize content with data labeling and content safety labeling standards; follow detailed annotation guidelines and escalate ambiguous cases with documented evidence; run consistency checks across tasks, validate edge cases, and support continuous model performance improvement.

Basic Qualifications

Must be based in Germany and eligible to work as a remote contractor/employee as applicable; fluent in both German and English (reading and writing) with strong command of grammar and nuance; strong analytical skills with the ability to compare outputs and justify decisions with clear reasoning; high attention to detail and ability to follow annotation guidelines compliance requirements; comfortable working with web tools and structured evaluation rubrics; able to manage workload independently in a remote setting.

Preferred Qualifications

Experience with AI data annotation, data labeling, prompt evaluation, or QA evaluation; familiarity with LLM evaluation, RLHF concepts, or large language model evaluation workflows; background in linguistics, writing/editing, translation, or technical documentation; self-driven, reliable, and able to handle ambiguity while maintaining training data quality standards.

Compensation

Pay: USD $35–$40 per hour, based on assessment results, task complexity, and ongoing quality (training data quality, validation accuracy, and annotation guidelines compliance).

How to Apply

Apply through Rexzone with your updated CV and a brief note confirming Germany residency and English/German fluency. Qualified applicants may be asked to complete an evaluation sample (ranking + reasoning) to demonstrate large language model evaluation skills.

Frequently Asked Questions

  • Q: Is this role remote?

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

  • Q: What tasks will I do?

    You will perform large language model evaluation tasks such as evaluation and ranking of model outputs (RLHF-style), prompt evaluation, QA evaluation, validation, content safety labeling, and writing reasoning-based rationales to improve training data quality.

  • Q: Do I need AI experience?

    AI experience is helpful but not required. If you can follow annotation guidelines, apply strong analytical reasoning, and maintain high training data quality, Rexzone will provide task instructions and rubrics.

  • Q: What languages are required?

    Fluency in both German and English is required, including reading and writing with attention to nuance and accuracy.

  • Q: What domains are covered?

    Domains may include general knowledge, customer support-style conversations, writing and editing, summarization, reasoning, and content safety—focused on model performance improvement through RLHF and LLM evaluation workflows.

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

Industry-Leading Compensation

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