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Zouhair LahiaZL

Zouhair Lahia

Expert Lean Six Sigma | Performance & Costs

€800/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Zouhair

Senior consultant with over 20 years of experience, I support industrial and service companies in improving their performance, reducing costs, and optimizing processes.

I work on high-impact projects: Lean deployment, operational diagnosis, team coaching, KPI implementation, and performance management.

👉 My interventions have led to up to 50% productivity gains, 10% cost reduction, and millions of euros saved on sites like Bombardier, Safran, Hydro-Québec, Boeing, or Nexera.

✅ Structured, pragmatic, and results-oriented approach, always adapted to the company's context.

💼 On-site or remote assignments. Available for projects in France and internationally.

💶 My daily rate (€800) reflects confirmed experience and concrete results. For long or recurring assignments, an adapted rate can be proposed.

📍 Based in Montreal, I work remotely or on-site for clients in France and internationally.
  • Arabic

    Native or bilingual

  • French

    Native or bilingual

  • English

    Native or bilingual

Can work on-site
Paris (up to 50km), Lyon (up to 50km), Toulouse (up to 50km), Nantes (up to 50km)

Experience

  • CGI, (Consulting Firm),
    Senior Consultant – Operational Excellence & Performance
    October 2023 - Today (2 years and 8 months)
    Canada
    • Optimized insurance processes at National Bank of Canada, improving end-to-end efficiency by 100%
    • Modernized Hydro-Québec's operations system platform
    • Conducted a performance flash assessment for manufacturing companies: +15% productivity and –5% cost through a transformation roadmap
  • Merkur, (Consulting Firm),
    Senior Consultant – Lean & Performance Improvement
    January 2021 - January 2023 (2 years)
    Canada
    • Reduced product defects by 15% and increased daily output by 10% at Nexera
    • Delivered 100% success in coaching plant directors and supervisors at Mecachrome
    • Achieved 25% savings in packaging material through process redesign
    • Deployed Lean culture and improved production capacity by 10% in food and cable manufacturing sites
  • Bombardier, (Aeronautic Industry),
    Operations Manager
    January 2015 - January 2021 (6 years)
    Mirabel, QC, Canada
    • Improved production line quality and efficiency, saving over $100K
    • Cut rejected parts by $500K and reduced consumables use by 70%
    • Replaced open stock system with just-in-time delivery boxes, saving $350K
    • Led team training and Lean coaching to reduce costs and optimize processes

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Education

  • DUT –
    École Supérieure de Technologie de Casablanca (ESTC)
    2002
    DUT –
  • Lean Six Sigma Black Belt Certified
    Council for Six Sigma USA
    Lean Six Sigma Black Belt Certified

Skill set

Categories