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Portugal
Remote only
Updated: 07 July 2026
Freelance | 8–20 hrs/week | Remote (EU/UK)
Are you an experienced Lean / Six Sigma Black Belt passionate about shaping the future of artificial intelligence? Join 10x Team as a Freelance Lean / Six Sigma Black Belt Expert – AI Trainer and put your process improvement knowledge to work enhancing advanced AI models, all while enjoying the flexibility of remote, project-based work.
About Us:
10x Team connects top independent professionals with leading AI labs to accelerate innovation in artificial intelligence. We are seeking seasoned Lean / Six Sigma experts, located in the EU or UK, to train AI systems focused on process improvement, operational excellence, and data-driven decision-making.
Key Responsibilities:
Review and refine AI-generated outputs related to Lean methodology, Six Sigma practices, and process improvement
Evaluate the accuracy and practicality of AI recommendations for waste reduction, defect minimization, and workflow optimization
Develop and provide real-world scenarios and case studies from your Lean / Six Sigma experience
Generate scenario variations that address industry best practices, continuous improvement, and risk mitigation
Identify gaps, risks, or inaccuracies in AI-generated content, delivering actionable, structured feedback
Guide AI systems to better understand, interpret, and apply Lean / Six Sigma principles
About You:
Experienced Lean / Six Sigma Black Belt with hands-on expertise in process mapping, root cause analysis, and continuous improvement
Based in the EU or UK
Deep familiarity with Lean principles, Six Sigma tools, and operational excellence standards
Analytical, detail-oriented, and able to provide structured, constructive feedback
Available 8–20 hours per week, comfortable with remote and asynchronous collaboration
Why Join 10x Team?
Flexible, project-based freelance assignments – 100% remote
Directly influence how AI systems understand and support process excellence
Access professional development through our 10x Team AI Academy
Join a supportive network of independent experts with efficient onboarding
How to Apply:
After applying, you’ll receive an email detailing the steps to:
Complete a short written assessment
Participate in an AI-powered interview
Important: Your application is only complete once you finish all steps via the email link.
Please note: these AI Lab missions are not traditional job openings with fixed start dates. Project demand is highly dynamic and matching depends on your expertise, availability, and current AI Lab needs. Some experts are matched within days, while others may wait longer for a suitable project.
Help build the next generation of AI-driven process improvement—apply today!
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NOTE
At 10x, there are two types of opportunities:
1. Traditional freelance missions
These are regular project-based opportunities where the listed mission is the actual project you may work on.
2. AI Lab roles
For AI Lab roles, we scout, review, and approve profiles for access to future project opportunities.
The missions listed for AI Lab roles are not traditional job openings. AI Lab work is often highly confidential as this exposes information of what an AI Lab is working on, and project requests are unpredictable. When an AI Lab request comes in, we often need to respond within 24 hours with suitable talent.
Matching depends on the specific needs of each AI Lab project and your niche expertise. Once your profile is reviewed and approved, you may be matched to relevant AI Lab projects when suitable opportunities arise.
This can happen within hours, but it may also take months, depending on the researchers at the AI labs and their project needs.
