Hamza Haj Yahya

Customer Quality Engineer at Leoni Tunisia | Passionate About Process Improvement, Root Cause Analysis & Customer Satisfaction

Sousse, Tunisia

About

My journey as a Quality Engineer began on the factory floor, where I gained a deep, hands-on understanding of production realities and the vital role of quality control. This experience shaped my ability to approach quality challenges not just from a theoretical perspective, but with practical, sustainable solutions. I focus on identifying quality issues, minimizing defects, and implementing robust corrective actions. Guided by Lean Six Sigma principles, I lead continuous improvement initiatives that enhance product reliability, streamline processes, and reduce waste — all while aligning with customer expectations and industry standards. My work has consistently contributed to cost savings and measurable improvements in output quality.

Experience

  • Customer Quality Engineer at LEONI TUNISIA
    Jul 2025 - Present · 1 yr 1 mo

    ▪︎Ensures respect and application of customer technical specification requirements and LEONI standard ▪︎Manages and supervises the Operation Quality team ▪︎Validates quality documentation ▪︎Leads the 8D report actvities and answers to customer

  • Hutchinson (2 yrs 6 mos)
    • Production Planner
      Jul 2023 - Jul 2025 · 2 yrs 1 mo

    • Stagiaire projet
      Feb 2023 - Jul 2023 · 6 mos

  • Stagiaire at Hamelin Brands Limited
    Aug 2022 - Sep 2022 · 2 mos

  • Stagiaire at LEONI
    Jul 2022 - Aug 2022 · 2 mos

  • Stagiaire at Renault Trucks
    Aug 2021 - Oct 2021 · 3 mos