Germany-Based English & German AI Generalist Trainer (Remote, Full-Time) 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 validating model-generated outputs to drive training data quality and model performance improvement.

About the Role

As a Germany-based English & German AI Generalist Trainer at Rexzone, you will help improve AI/LLM workflows through RLHF-style evaluation, prompt evaluation, and QA evaluation. You will review model responses in both English and German, rank alternative outputs, validate correctness and safety, and write clear rationales that reinforce annotation guidelines compliance. Your work directly impacts training data quality, large language model evaluation, and measurable model performance improvement.

Key Responsibilities

Perform large language model evaluation by reviewing model-generated answers for accuracy, helpfulness, reasoning quality, and safety; rank and compare multiple candidate outputs and select best responses using defined rubrics; conduct QA evaluation to validate labels, rationales, and edge-case handling; write concise, evidence-based rationales in English and German to support evaluation decisions and reasoning; apply annotation guidelines compliance consistently, escalating ambiguous cases and proposing guideline improvements; validate content safety labeling decisions and ensure policy adherence across sensitive topics; monitor training data quality trends, identify systematic errors, and recommend workflow changes to support model performance improvement; collaborate asynchronously with operations and QA to resolve disagreements, calibrate scoring, and maintain high inter-annotator agreement.

Basic Qualifications

Must be based in Germany and authorized to work as an independent contractor or employee as applicable; fluent in both English and German (reading and writing) with strong grammar and clarity; strong analytical skills with the ability to evaluate reasoning, consistency, and factuality; exceptional attention to detail and ability to follow annotation guidelines compliance; comfortable working with web-based annotation tools and structured evaluation rubrics; able to manage time independently in a remote setting while meeting quality and throughput targets.

Preferred Qualifications

Prior experience in data labeling, prompt evaluation, QA evaluation, or RLHF-related tasks; familiarity with LLM behavior, common failure modes (hallucinations, instruction-following issues), and evaluation methodologies; experience writing high-quality rationales and documenting decisions for audits; self-driven and proactive communicator who can flag risks, propose process improvements, and maintain consistency under shifting requirements.

Compensation

USD $35–$40 per hour (based on assessment performance and task complexity).

How to Apply

Apply through Rexzone with your updated resume/CV. If selected, you will complete a short skills assessment focused on bilingual evaluation, ranking, and rationale writing aligned to training data quality standards.

Frequently Asked Questions

Q: Is this role remote?
Yes. This 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 such as evaluating and ranking model outputs, conducting QA evaluation, validating labels, applying annotation guidelines compliance, and writing reasoning-based rationales.
Q: Do I need AI experience?
AI experience is preferred but not required. Strong analytical skills, attention to detail, and the ability to follow evaluation rubrics are essential; training and calibration are provided.
Q: What languages are required?
Fluency in both English and German is required for bilingual evaluation, rationale writing, and consistency checks.
Q: What domains are covered?
You may evaluate a wide range of domains (general knowledge, productivity, customer support-style queries, and safety-sensitive content), including content safety labeling and training data quality checks to support 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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