Lean / Six Sigma Black Belt Expert - AI Trainer - Freelance - 8-20 hrs/week - Remote

Updated: 07 April 2026

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

Are you an experienced Lean / Six Sigma Black Belt who instinctively spots gaps in operational reasoning and understands the complex realities of process improvement and quality management? 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 Lean/Six Sigma expertise at scale.

About the Role
10x.team connects expert freelancers with leading AI labs building next-generation models. We are looking for knowledgeable Lean / Six Sigma Black Belt professionals based in the EU or UK to enhance the accuracy, depth, and real-world relevance of AI-powered process improvement and operational systems.

What You Will Do

- Review and refine AI-generated outputs related to Lean, Six Sigma, process optimization, quality control, and the practical aspects of continuous improvement projects

- Evaluate AI responses for operational accuracy, practicality, and compliance with real-world requirements

- Draft realistic process improvement scenarios based on your direct professional experience

- Create scenario variations from different perspectives (e.g. process owner, Black Belt, client, or project manager)

- Identify gaps, oversights, or weak reasoning in AI-generated process improvement and quality content

In simple terms: You will assess and improve AI-generated content, ensuring it reflects true Lean/Six Sigma reasoning, authentic process optimization methods, and practical improvement approaches. Rather than conducting traditional Lean/Six Sigma projects, you’ll apply your expertise to help AI systems understand and reason about process improvement at scale.

Who You Are

- A senior-level Lean / Six Sigma Black Belt with significant professional experience within the EU or UK

- Experienced in advising on, planning, and executing Lean/Six Sigma initiatives and continuous improvement strategies

- Skilled at evaluating operational processes, requirements, and compliance

- 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 Lean/Six Sigma expertise in a rapidly evolving, high-impact AI environment

- Directly contribute to building advanced AI-based process improvement and operational systems

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

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

Screening Process
Our process is straightforward, transparent, and supportive:

- Brief written test assessing your Lean/Six Sigma and process improvement reasoning

- Short AI-based interview

- Verification of credentials and identity

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

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