Updated: 27 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
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 process improvement expertise of the world’s most advanced AI models!
#LI-TT1
10xteam