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 assessing, ranking, 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 outputs, applying annotation guidelines compliance, and producing clear rationales that support RLHF, large language model evaluation, and training data quality. You will work fully remote and full-time, collaborating with cross-functional teams to validate outputs, perform QA evaluation, and identify issues affecting model performance improvement across multilingual (German/English) use cases.

Responsibilities

Evaluate and rank model-generated responses in English and German using rubric-based criteria; perform QA evaluation and validation checks to ensure training data quality and annotation guidelines compliance; write concise, well-reasoned rationales explaining rankings, correctness, and safety decisions; review prompts and conduct prompt evaluation to detect ambiguity, bias, and failure modes; execute data labeling and content safety labeling for sensitive, policy-relevant, or unsafe content; troubleshoot edge cases, document findings, and escalate recurring errors impacting model performance improvement; maintain consistency across tasks by following updated guidelines and calibration feedback; support large language model evaluation efforts by auditing datasets and verifying label quality.

Basic Qualifications

Must be based in Germany and authorized to work remotely from Germany; fluent in German and English (reading and writing); strong analytical skills with the ability to compare outputs, spot inconsistencies, and justify decisions; exceptional attention to detail and commitment to training data quality; comfort working with structured rubrics, evaluation forms, and annotation guidelines compliance; ability to manage full-time workload and meet quality/throughput targets.

Preferred Qualifications

Prior experience in data labeling, QA evaluation, RLHF, or other annotation workflows; familiarity with LLM evaluation concepts (helpfulness, harmlessness, truthfulness, reasoning quality); experience writing rationales, performing ranking tasks, or validating multilingual content; self-driven, reliable, and comfortable working independently in a remote environment; interest in AI safety, content safety labeling, and model performance improvement.

Compensation and Schedule

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

How to Apply

Apply through Rexzone and include a brief summary of your bilingual (German/English) experience, attention to detail examples, and any prior work with evaluation, ranking, QA, or annotation workflows.

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 evaluate and rank model outputs, perform QA evaluation and validation, follow annotation guidelines compliance, write reasoning-based rationales, and support RLHF and large language model evaluation to improve training data quality.

  • 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 guidelines consistently; training is provided for the evaluation framework.

  • Q: What languages are required?

    Fluency in both German and English is required, including strong reading and writing skills.

  • Q: What domains are covered?

    Tasks can span general knowledge, customer-style prompts, reasoning and writing quality, prompt evaluation, content safety labeling, and other areas that affect model performance improvement and training data quality.

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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