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 ranking model outputs, writing clear rationales, and performing QA evaluation to improve training data quality and drive model performance improvement.

About the Role

As an AI Generalist Trainer at Rexzone, you will evaluate and improve AI systems through RLHF-style tasks, large language model evaluation, and training data quality audits. You will review model-generated responses in English and German, apply annotation guidelines compliance, and provide rankings, validations, and reasoning to help teams deliver measurable model performance improvement.

What You Will Do

You will complete prompt evaluation and LLM evaluation workflows by comparing outputs, ranking alternatives, documenting rationales, and validating edge cases. You will also perform QA evaluation to ensure consistent data labeling, content safety labeling, and adherence to project-specific annotation guidelines.

How Success Is Measured

Success is measured by accuracy of evaluations, consistency of rankings, clarity of reasoning, annotation guidelines compliance, and overall impact on training data quality and model performance improvement across large language model evaluation programs.

Working Model

This is a full-time, remote role for candidates based in Germany. You will collaborate asynchronously with cross-functional teams, follow defined annotation guidelines, and participate in calibration sessions to maintain high-quality evaluation standards.

Frequently Asked Questions

Q: Is this role remote?
Yes. This is a remote, full-time role for candidates based in Germany.
Q: What tasks will I do?
You will perform large language model evaluation, rank and compare model outputs, write reasoning/rationales, run QA evaluation checks, and complete validation tasks to strengthen training data quality under annotation guidelines compliance.
Q: Do I need AI experience?
AI experience is helpful but not required. You must be able to follow annotation guidelines, apply strong analytical judgment, and deliver consistent evaluations; prior data labeling, RLHF, or LLM evaluation experience is a plus.
Q: What languages are required?
Fluency in both German and English is required, as you will evaluate and write rationales in both languages.
Q: What domains are covered?
You may evaluate prompts and responses across general knowledge, writing quality, instruction following, reasoning, and content safety labeling scenarios, depending on project needs.

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.

Respect at the Core of Everything

AI trainers are the heart of our company. We treat every expert with trust, humanity, and genuine appreciation. From personalized support to transparent communication, we build long-term relationships rooted in respect and care.

Ready to Shape the Future of AI/ML Data Operations?

Apply Now.