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Prompt Engineer - AI Trainer - Freelance - 8-20hrs/week - Remote

10x.Team
Brussels, Brussels Region, Belgium
Contract
Applications go directly to the hiring team

Full Description

Updated: 27 April 2026

Freelance | 8–20 hrs/week | Remote (EU/UK)

Are you an experienced prompt engineer or AI trainer who instinctively spots gaps in AI-generated reasoning and understands the realities of prompt engineering? Do you have 8 to 20 hours per week available alongside your main job or consulting projects? Join us in shaping how AI understands and applies prompt engineering expertise at scale.

About The Role

10x.team connects expert freelancers with leading AI labs building next-generation models. We are looking for knowledgeable prompt engineers and AI trainers based in the EU or UK to enhance the accuracy, depth, and real-world relevance of AI-powered systems.

What You Will Do

* Review and refine AI-generated outputs related to prompt engineering, prompt writing, and practical AI interaction tasks

* Evaluate AI responses for quality, effectiveness, and compliance with real-world requirements

* Draft realistic prompt engineering scenarios based on your direct professional experience

* Create scenario variations from different perspectives (e.g. prompt engineer, client, end-user, or stakeholder)

* Identify gaps, oversights, or weak reasoning in AI-generated content

In Simple Terms

You will assess and improve AI-generated content, ensuring it reflects true prompt engineering reasoning, authentic documentation, and practical prompting procedures. Rather than conducting traditional prompt engineering projects, you’ll apply your expertise to help AI systems understand and reason about prompt engineering at scale.

Who You Are

* A senior-level prompt engineer or AI trainer with significant professional experience within the EU or UK

* Experienced in advising on, preparing, and executing prompt engineering or AI training tasks

* Skilled at evaluating solutions, documentation, and compliance with requirements

* Comfortable working independently and providing structured, critical feedback

* Available for 8–20 hours per week, with prompt availability

Why Join?

* Flexible, fully remote freelance work that fits your current commitments

* Apply your prompt engineering expertise in a rapidly evolving, high-impact AI environment

* Directly contribute to building advanced AI-powered systems

* Free access to our in-house AI Academy to further develop your AI skillset

* Clear onboarding, structured tasks, and ongoing opportunities for collaboration

How To Apply

To complete your application, you’ll receive an email right after applying with a link to:

* A short written evaluation

* A brief AI-powered interview

* A quick compliance check (credentials & identity)

Important: Your application is only complete once you finish these steps via the link in the email.

After successful onboarding, you’ll be eligible to start on upcoming projects as they become available.

Join us to help shape the prompt engineering expertise of the world’s most advanced AI models!

Applications go to the hiring team directly