Short summary




Publications and speaking


 Lean Six Sigma Master Black Belt

Tomasz Lesniewicz

Lean Six Sigma  and Design of Experiments Expert

Certified Lean Six Sigma Master Black Belt with over 10 years of experience in the area of operational excellence. Responsible for planning and coordinating projects focused on product and service improvement and cost reduction. Tomasz's mentor during the 20-week Master Black Belt training was Pierre Bayle, one of the best Six Sigma trainers in Europe.

A practitioner who has delivered over 20 million in savings to organizations during his career.


Trainer with expertise in process improvement tools, who has trained over 400 experts so far.


Lecturer of Lean Six Sigma postgraduate studies and Six Sigma trainer at the WSB University.

A change leader who uses tools to stimulate organizational, cultural and process changes and ensures continuous skills development.


Long-term manager with experience gained in the areas of production, services and product development.

  • Operational excellence trainer and consultant with experience in service, manufacturing and R&D 
  • Certified Lean Six Sigma Master Black Belt (Whirlpool Corporation)
  • Change leader (5 Lenses Lean Management System) trained by McKinsey&Company
  • Management consultant, trained by The Boston Consulting Group
  • Lecturer at the WBS University, conducting training and postgraduate studies in the area of operational excellence
  • Audiophile and vinyl record collector
  • Husband to Dominika and father to Kalina and Ignacy


Business Excellence Change Leader | Merck Group

Lecturer | WBS University

Senior Process Excellence Change Agent | Associate director | UBS Group AG

Lean Coach | Volvo Group

Lean Six Sigma Master Black Belt for Manufacturing | Whirlpool Corp.

Six Sigma Master Black Belt for Electronics Execution | Whirlpool Corp.

Six Sigma Black Belt in R&D | Whirlpool Corp.

Inspektor | Regional Verification Office in Wrocław | Accredited Laboratory of Electronics

2019 – present

2018 – present

2017 – 2019

2016 – 2017

2014 – 2016

2012 – 2014

2008 – 2012

2006 – 2008