Ultimately comprehensive
and resounding results


Refine translates the terms Lean Construction and change into a language that everyone understands. So that this always succeeds in a goal-oriented manner, we think and act according to the Lean methods that we have refined and call "bottom-up and face-to-face". Empathy, simple concepts, comprehensive knowledge and technical know-how are combined as never before to produce a result that is convincing in all areas of complex design and construction processes.

Know-how now

The integration of lean thinking into one's own company is also a pedagogical challenge. Therefore, the simplicity of the method used is the key to a perfect process execution. In our workshop series entitled Refinery, we explain how construction processes can be designed effectively and efficiently with the help of the principles of lean. During the one-day workshop, our experienced construction engineers will introduce you to lean principles and instruct you to integrate them directly into your own projects.

In the Refinery all participants learn the following aspects of Lean Construction:

  • What is Lean Construction?
  • Lean Principles
  • Types of waste in construction indusrty
  • The methodology of the Last Planner System
  • Short-cycled detailed production planning for the planning and execution phase

Price 1.100 € plus VAT
If you register up to 4 weeks before the date, an early bird price of 750 € plus VAT applies.

Register yourself and your team for our Refinery on the dates below. If you have any further questions, please feel free to contact us at the following e-mail address:

Stuttgart (focus on IPD), March 18, 2021
Barcelona, March 25, 2021
Zurich, April 01, 2021
Paris, April 15, 2021
Liverpool, May 13, 2021
Munich, June 10, 2021
Frankfurt, September 09, 2021
Berlin, September 30, 2021
Stuttgart, November 11, 2021
Zurich, November 25, 2021

People are interested in people

We play in every league, whether in a small or large team, both nationally and internationally.

The term Refine stands for improving, grading up and changing. Our network approach is not described by the common loose association of partners; rather, it works with the resounding power of a strategic segmentation into cells. This not only guarantees work performance that is constantly self-optimising, it also guarantees the reliable availability of personnel.


We value the messenger as much as the message

Our employees are what distinguishes our company – extensive experience and the best qualifications combined with motivation and enthusiasm for the goal.

Dr. Claus Nesensohn

The future of construction relies on the harmonic collaboration of all process participants and a coordinated Lean System.

Starting out as a carpenter and civil engineer, my path led to a PhD degree. My consultancy work encompasses national and international projects of every size. As founder and board member of Refine, I bring the causality of all process developments in the trade sections and decision-making hierarchies together and make sure that Lean leads to the success that our clients desire.

Monika Dubiel

Intelligent building demands new thinking.

After graduating in Building Technology and Real Estate Management in Stuttgart and after studying for one semester in Great Britain, it quickly became clear what really drives me. Lean Construction, Lean design and the Last Planner® System are the future of construction. As an experienced consultant at Refine, I have the daily opportunity to make a difference and spur new thoughts and work processes for continuous improvement.

Andreas Böker

Lean from experience.

Through my various management positions in the construction industry and in plant construction, I know the needs and requirements of many project participants: from the construction company to the general contractor to the building owner. My experience from over two decades has shown me that complex projects can only be led to success through clear process structures and close collaboration. As a true team player, I am facing the exciting challenge with Refine Projects AG: to revolutionize the construction industry!

Annett Schöttle

How can the new be brought into the construction world?

As a researcher, author, editor, and consultant, I am convinced that the construction industry must change in a lasting way; a transformation from the current conflict culture to a collaborative approach. After studying industrial engineering in Dresden and studying abroad for two semesters in Auckland, and conducting research work at the University of California in Berkeley and at the Pontifical Catholic University in Santiago, Chile, as well as my continuing research activities, I am aware of the importance and effectivity of carrying out a project in a team-oriented way.

Bülent Yildiz

From semi-conductor production to a new hotel building - all these areas have one thing in common:

Only those who meet the challenges of complex design and construction processes and understand them as an opportunity for change, set a sustainable process in motion within projects that is nothing less than the future form of work. As lecturer, founder and member of the board at Refine, with many years of experience in the management of national and international projects in all sectors of the industry, I develop Lean-based production systems with our clients for optimum added value and target-aimed collaboration.

With our enterprise, Refine, we have created the opportunity to position the excellence of our team optimally in the market and at the same time give our activities a mission: Face-to-Face Lean Solutions.

Johannes Pitterle

Solution-oriented thinking improves communication – while keeping the human being in focus.

In highly complex projects, which are often limited to a certain period of time, conventional project management approaches are no longer adequate: Projects must be considered as temporary activities in which specialists work on a common goal. Through lean we enable successful collaboration, reduce complexity and thus ensure the success of the project.

After studying in Germany and Argentina, I have gained wide-ranging experience and skills in my various professional positions in planning, construction management, project and construction management and the implementation of lean systems. As Head of Refine Schweiz AG, it is my goal to push the development and expansion of Lean Design and Lean Construction as well as Integrated Project Delivery (IPD) in the Swiss area – and thereby to transform and continue to develop the construction industry in Switzerland.

Marlen Rissmann

„So seltsam es auch klingen mag, die Stärke der Mathematik beruht auf dem Vermeiden jeder unnötigen Annahme und auf ihrer großartigen Einsparung an Denkarbeit.“ – Ernst Mach, Physiker

Es klingt paradox, aber in der Mathematik und in der Lean-Philosophie gibt es einige Parallelen: Durch Lean vermeidet man Annahmen, in dem wir Fakten durch offene und direkte Kommunikation schaffen. Während meines Studiums an der Hochschule für Technik in Stuttgart beschäftigte ich mich mit der theoretischen Mathematik und ging auf Tuchfühlung mit dem Ursprung sowie der Allgegenwärtigkeit dieser. In meinem Auslandssemester an der Universidad Autónoma de Yucatán, Mexiko setzte ich mich mit den Meistern der Mathematik – den Mayas – auseinander. Dabei habe ich folgende Überzeugung gewonnen: Die Essenz in der Mathematik ist es, die Zusammenhänge in komplexen Aufgaben zu erkennen und nicht außer Acht zu lassen. Diesen Blickwinkel bringe ich mit in die Zusammenarbeit mit unseren Kunden und behalte den Überblick selbst in komplexen Projekten. Der Erfolg dieser Projekte hängt davon ab, die Zusammenhänge zu erkennen und Prozesse zu optimieren. Mit meiner mathematischen Sicht auf die Dinge befähige ich somit unsere Projektteams zur High-Performance.

Mark Novinsky

Excellence is created when knowledge meets Team

Through my studies at the KIT (Karlsruhe Institute of Technology) I have the excellent theoretical knowledge, which characterizes the German construction industry. Due to civil engineering internships in Germany and Romania and a semester abroad in Argentina, I realized that you have to share the experience gained and the knowledge acquired in order to be successful in the team. As a consultant of Refine I now use the opportunity to share my knowledge purposefully, further develop and establish lean thinking worldwide. With the best approaches, the most interesting customers and our innovations, we help to take HP to the street.

Michael Schenzle

Sometimes improvement means doing things we've never done before.

Through my former career in the HVAC sector (heating, ventilation, sanitation and air conditioning) and my following studies of civil engineering at the University of Stuttgart, I early gained practical experience – and discovered my passion for the construction industry. In the daily project routine, I soon realized how important open communication between process owners and the reliable making of promises is. Now as a consultant at refine, I not only have the opportunity to develop the potential of project teams with the help of various lean methods, I also have the opportunity to form high-performance teams from them.

Aldo Renz

On the way to flow efficient projects with focus on people

Over several stages in my career I discovered the lean philosophy: starting with my master's degree in "Construction Management and Engineering" in the Netherlands, continuing with various projects as a working student and ending with a semester abroad in Tokyo, Japan. It was there that I experienced at first-hand how the Lean philosophy shapes the local society. I became convinced that lean lives from "flow-oriented processes with people at the center". As a consultant at refine I want to inspire other people of the Lean philosophy and offer them a North Star for their actions.

Nikola Nachkov

Through the passion for continuous improvement to the revolution of the construction industry!

After completing my diploma studies at the Karlsruhe Institute of Technology, I quickly realized as a construction manager how huge the gap is between the harmonious and waste-free ideal of a lean industry and the current state of the construction industry. On our journey towards perfection, there is only one way: not to focus on the task but on the people! As a consultant at Refine I can combine my passion for continuous improvement with my lean knowledge and coaching methods on a daily basis. This allows me to empower people to shape the future of the construction industry today!

Dilan Demir

Mit einem gemeinsamen Verständnis zum sicheren Flow im Projektteam

Schon in meinem Studium des Bauingenieurwesens an der Hochschule für Technik in Stuttgart mit Vertiefung im Baumanagement faszinierte mich Lean. Denn es ist mehr als eine Methode, Lean ist eine Philosophie! Schon während meiner Zeit in der Bauleitung habe ich miterlebt, dass es der Baubranche vor allem an einem fehlt: Flow. Woran das lag? Zusagen wurden nicht eingehalten, die Beteiligten schauten nur nach ihren eigenen Zielen und es fehlte an einem gemeinsamen Verständnis. Flow ist das stetige Vorankommen, Flow kennt keinen Stillstand.

Doch wie schaffen es Projektteams, in den Flow zu kommen? Aus meinen Erfahrungen in der Bauleitung und als Lean Transformer bei refine bin ich davon überzeugt, dass man durch ein gemeinsames Verständnis sicher zum Flow kommt. Dafür setze ich mich leidenschaftlich ein: ein gemeinsames Verständnis zu schaffen und gemeinsam mit unseren Teams die Baubranche damit zu revolutionieren.

Max Schulz, Lean Transformer

One of the biggest industries in the world is changing. And we are right in the middle of it.

Transparency, collaboration and a common understanding on the construction site make possible what was previously unthinkable. Stable processes, schedule accuracy and unprecedented flexibility are the result of a system that couldn't be simpler: the Last Planner System.

During my studies at the Clausthal University of Technology as well as in Istanbul and Trondheim, I gathered exciting new and inspiring impressions. In the process, I learned what innovations and new working methods can achieve in modern companies. During my internship at Porsche AG, I experienced for the first time what it means to be passionate about a topic and to pass this enthusiasm on to others. With this enthusiasm for process improvement, continuous optimisation and the Last Planner system, I offer our project teams a fresh view and consistent improvement of their processes.

Selina Häringer

Construction projects usually do not fail because of a lack of technical understanding. They are more likely to fail because of a bad synchronization of the way the individual project members work together.

Especially in complex projects it is essential for the success of a project to create the framework for a collaborative exchange in order to reduce the complexity of the communication paths.

For that reason I am convinced that the combination of the scientific expertise of my university degree in business psychology and the project teams of the construction industry is an essential factor for building high performance teams. During my studies I already had first contact with Lean. This gave me the opportunity to recognize the efficiency of this management philosophy right from the start, and since then I have been sharing it passionately with my project teams.

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