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Zouhair LahiaZL

Zouhair Lahia

Expert Lean Six Sigma | Performance & Coûts

€800/day
Paris, FR
15+ years

Average response time: 1 hour

About Zouhair

Consultant senior avec plus de 20 ans d’expérience, j’accompagne les entreprises industrielles et de services dans l’amélioration de leur performance, la réduction des coûts et l’optimisation des processus.

J’interviens sur des projets à fort impact : déploiement Lean, diagnostic opérationnel, coaching des équipes, mise en place de KPI et pilotage de la performance.

👉 Mes interventions ont permis jusqu’à 50 % de gains de productivité, 10 % de réduction des coûts, et des millions d’euros économisés sur des sites comme Bombardier, Safran, Hydro-Québec, Boeing ou Nexera.

✅ Approche structurée, pragmatique et orientée résultats, toujours adaptée au contexte de l’entreprise.

💼 Missions en présentiel ou à distance. Disponible pour des projets en France et à l’international.

💶 Mon tarif journalier (800 €) reflète une expérience confirmée et des résultats concrets. Pour les missions longues ou récurrentes, une tarification adaptée peut être proposée.

📍 Basé à Montréal, j’interviens à distance ou en présentiel pour des clients en France et à l’international.
  • 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