"I have had the pleasure to work with Ivan for over a year when Ivan was responsible for supplier development. Without a doubt Ivan’s passion for continuous improvement was visible through his work and deliveries. His problem solving capability is impeccable. An honest man, who believes that transparency is absolutely the key to keeping the supply chain responsive. Interpersonal skills– a skill very crutial for this assignment, is one of Ivan’s strong suit. During his assignment, Ivan proved to be a source of new learnings for me. Ivan is a strong resource for any company looking to optimize its operations."

„We, PwC Academy, are happy that Ivan is able to transform his hands- on experience and professional expertize into an engaging Lean Six Sigma training sessions. His energy and enthusiasm for LSS motivates and is highly appreciated by our clients/students. Thank you :)“

„Ivan is an experience consultant, trustworthy and have an extensive understanding of the operations. When working with him I could see his in-depth understanding of the lean principles. With his hands-on experience, He will be able to show you and demonstrate the way to improve the shopfloor so that customer expectations are achieved (Quality, Delivery, Cost). He will support you in defining, designing, implementing the different standards and training required to get the job done. He has very good people interpersonal skills and positive mindset which is very important during “change management” phases. All in all, I would strongly recommend Ivan.“

„Ivan's positive attitude and ability to inspire those around him to love life as much as he does is truly unique. Ivan is very smart and insightful, which makes him a great speaker and an excellent colleague. His ability to put LEAN principles into practice is exceptional. He streamlines processes, minimizes waste and maximizes value for customers.Ivan is an inspiring personality who constantly motivates others to achieve the best results.I can highly recommend Ivan as a great LEAN Management expert, negotiator and inspiring colleague. His skills and approach are invaluable and I am sure he will be an asset to any team or project he is involved in. Ivan is a great professional with incredible talent and I am honored to work with him.“

"I have been working with Ivan for a period of time now. Ivan is delivering partly an operational excellence installation and implementation, partly supporting management in taking decisions, and especially the right decisions, in order to deliver to customers with high OTIF. Ivan has worked very independently from the first day, fast understanding the situation and with his high integrity and winning attitude has been able to improve not only OTIF, but also OEE and quality. He knows his lean tools, how to set them up, train and implement at the client. He is fast in his thinking thus patient when training and coaching leaders. A very competent consultant."

"Ivan is a motivated, forward-thinking and analytical manager who has an impressive knowledge of continuous improvement and lean manufacturing. He was respected by both colleagues and customers. He can tackle difficult challenges and is committed to implementing solutions. His leadership and organizational skills have been an asset to my team."

"Ivan works effectively with teams and motivates. He has always shown passion in his work and delivers results. Ivan has a vast amount of knowledge in continuous improvement and would be an asset to any business."

"I have always enjoyed working with Ivan because of his passion when it comes to CI and Lean methodologies. Ivan has always understood how to motivate teams and lead even difficult topics to success. He had incredible drive and determination in implementing ideas for improvement."

"I had the opportunity to work with Ivan in 2 conferences focused on continuous improvement - Beexcellent and Lean Summit Czechoslovakia. Ivan was one of our speakers and presented success stories and case studies of Auria Solutions and Amcor. When I met Ivan, I knew from the first sight that he was a great choice - enthusiastic, full of positive energy, a great speaker and an open-minded leader. In my experience, he is a person who looks for ways, not excuses, and he has always been a pleasure to work with."

"Working with Ivan was always practical, meaningful and had a clear goal. We always had fun and worked as a team. It has been a great few years of collaboration and enjoyable process changes, training, education in the Czech Republic and Slovakia."

"Ivan is a very committed and highly skilled continuous improvement professional. He has excellent communication skills and goal orientation. He achieves goals through teamwork where he involves and motivates each team member. I personally learned a lot from him about team management and continuous improvement methods. He is an excellent leader and a fair person. He builds respect through knowledge and can apply the right pressure needed to meet expectations and deadlines."

"Ivan is an incredibly positive, proactive agent of change. With a great deal of energy, knowledge and the ability to train, he is a very effective and also experienced manager of continuous improvement."

"Challenge accepted = problem solved! Yes, this is Ivan Rehak, once he decides he follows his targets! He is a pure energy and enthusiasm. Good member of team and part of company culture (builder). His know-how in manufacturing is perfect and he works hard on his technical skills. He has a clear LEAN mindset. 👍 More colleagues as Ivan."