Wiktor Wołoszczuk
Toyota Kata and TOC | Leantrix Board Member
Supports teams in applying Toyota Kata, PDCA and the Theory of Constraints. Helps them move from a properly defined challenge to fast, measurable experiments.
LEAN KATA GREEN BELT · TEAM IMPLEMENTATION AND CERTIFICATION PROGRAMME
Don't send one person on a training course.
Build a team that delivers results.
Typically within 8–12 weeks—or longer if the pace of the project requires it—a team of up to four people completes one project based on a real, strategically important organisational challenge. The team works step by step with a trainer, following the Toyota Kata routine and the PDCA cycle.
- 10 meetings · 8 hours of live teamwork with a trainer
- Access to 40 hours of instructional materials
- 2 certificates after meeting the programme requirements and passing the ILSSI exam
Your organisation purchases one project slot—not individual participant places.
1 PROJECT SLOT
Up to 4 people. One project. One price.
The entire team attends the meetings, works on one challenge and presents the final result together.
Regular price
€2,990 / Team
for one project slot for a team of up to 4 people
With 4 participants: €747.50 net per participant.
THE PROGRAMME IN NUMBERS
Lightweight in format. Powerful in results.
Team: up to 4 people
One organisation, one real project and shared responsibility for change.
Typically 8–12 weeks
The same 10 meetings can be spread over a longer period if the pace of experiments or the team’s availability requires it.
10 meetings · 8 hours
A kick-off, eight project sessions and a final project presentation—live with a trainer.
40 hours of materials
A knowledge library used when it is needed at a particular stage.
WHY A TEAM OF UP TO 4 PEOPLE
More perspectives than solo work. Less friction than a large group.
A four-person limit combines different perspectives, shared responsibility and a fast decision-making rhythm—without the coordination cost of a large group.
Individual work
One perspective, a greater risk of the project stalling and more difficulty embedding the change in the organisation.
Small team—up to 4 people
Joint analysis, division of work, mutual verification of hypotheses and project continuity even when one person misses a meeting.
Group of 5+
In a larger group, coordination costs increase and it becomes harder to maintain personal ownership and move quickly from discussion to experiment.
Project design rationale: research on complex problem solving shows that small teams outperform the best individual working alone, while coordination costs increase as team size grows. This is why the programme is limited to four participants. See: Laughlin et al. (2006), Wheelan (2009), Mueller (2012).
10 MEETINGS · 8 HOURS OF TEAMWORK WITH A TRAINER
From challenge to project presentation
Every meeting ends with a decision on the next step. The trainer helps the team think and test—the trainer does not complete the project for the participants.
STAGE 1
Kick-off with the team and sponsor
60 min
Challenge, scope, success measures, team roles and the sponsor’s expectations.
STAGES 2–3
Current condition and target condition
2 × 45 min
Data, direction and a measurable goal.
STAGES 4–9
PDCA experiments
6 × 45 min
Hypotheses, tests, conclusions and next steps.
STAGE 10
Project presentation with the team and sponsor
60 min
Result, evidence, conclusions and the sponsor’s decision on further implementation.
1 h + 8 × 45 min + 1 h = 8 hours of live work
HOW IT WORKS
40 hours of materials. No unnecessary marathon.
The full library is available from the beginning of the programme. The team does not have to work through it from start to finish—it uses specific knowledge when the current stage of the project requires it.
- short instructions matched to the current obstacle
- trainers' practical experience, not methodology alone
- AI support for analysing, synthesising and documenting experiments
MODULE LIBRARY
Full library available from day one
TPM
Practical module · approx. 30 min
SMED
Practical module · approx. 30 min
TWI
Practical module · approx. 30 min
VSM
Practical module · approx. 30 min
5S
Practical module · approx. 30 min
+20 additional modules
Available from the beginning of the programme
40 hours of instructional materials
You select only what the current stage of the project requires.
1. Problem
You start with a real organisational challenge—not a catalogue of tools.
2. Knowledge needed
You use the materials in the context of data, decisions and the current obstacle.
3. Proven result
Value comes from experiments, measurement and a standard—not from the number of hours watched.
THE PROGRAMME ENDS WITH A RESULT
Not just a certificate
FOR PARTICIPANTS
A capability you can repeat
- running Toyota Kata and PDCA micro-experiments
- analysing the current condition and working with data
- creating an A3 and standardising the result
- the opportunity to earn two certificates after meeting the requirements
FOR THE ORGANISATION
A project focused on measurable change
- a measurable business outcome in a real process
- a team capable of running further experiments
- a shared language for the sponsor, team and trainer
- a working standard that can be scaled
A PARTICIPANT'S PUBLIC LINKEDIN POST
Target: −50%. Result: −90.5% MISS.
Przemysław Palka, Production Manager, co-led a project on two newly launched production lines between Q4 2024 and Q1 2025.
- analysis of data and key causes
- work standardisation and process visualisation
- PDCA micro-experiments and welder involvement
- a stable process, elimination of rework and higher efficiency
Source: a public post by a programme participant. This is not an official endorsement by Caterpillar. The result relates to a specific project and does not guarantee an identical outcome in another organisation.
ONE PROJECT · TWO CERTIFICATES
Two certificates after meeting the requirements
The programme price includes the opportunity to earn two separate certificates: Lean Kata Green Belt Leantrix / Optimum after completing and presenting the project and ILSSI Lean Green Belt after passing the exam.
LEAN KATA GREEN BELT
Leantrix / Optimum
After completing and presenting a real project and meeting the programme requirements.
LEAN GREEN BELT
International Lean Six Sigma Institute
After passing the ILSSI exam.
LEAN KATA GREEN BELT IN PRACTICE
Open Day at Kompania Piwowarska
14 October 2026 · Tychy
An Open Day for the Lean Kata Green Belt programme was held at Kompania Piwowarska. The session was led by Wiktor Wołoszczuk and Maurycy Szkolnicki, who presented a practical approach to running improvement projects and developing participants’ capabilities.
CLIENT REFERENCES AND IMPLEMENTATIONS
Evidence instead of declarations
Leantrix publishes signed client references and full case studies so that you can assess not only the promise, but also the way of working and the results.
1,200+
projects completed
350+
organisations we have worked with
30+
implementations documented in case studies
What our clients say
ONE PRICE FOR THE ENTIRE TEAM
€2,990 / Team
Your organisation purchases one project slot: one team, one real project and shared responsibility for the result.
REGULAR PRICE
€2,990 / Team
for the entire team of up to 4 people
One price · one project · up to 4 people
With a four-person team: €747.50 net per participant.
- typically 8–12 weeks
- 10 meetings · 8 hours of teamwork with a trainer
- access to 40 hours of materials
- one real project
- the opportunity to earn 2 certificates after meeting the requirements
Project team of up to 4 people
You work together on one real challenge—from data and hypotheses through experiments to the result and final project presentation.
- 1 real organisational challenge
- 10 meetings · 8 live hours with a trainer
- 40 hours of instructional materials
- 2 certificates after meeting the requirements
FAQ
Frequently asked questions before registering your team
The start date is agreed individually with your organisation. The standard schedule is 8–12 weeks, but the meetings can be spread over a longer period if the pace of experiments or the team’s availability requires it.
Yes. The ten project meetings take place live online with a trainer, and the instructional materials are available between sessions.
No. Your organisation purchases one project slot for €2,990 net for a team of up to four people. With four participants, this is equivalent to €747.50 net per participant.
This is the standard schedule. The same 10 meetings can be spread over a longer period if the pace of experiments or the team’s availability requires it. Additional sessions require a separate agreement.
No. This is the full knowledge library. The team uses selected materials according to the stage and current needs of the project.
The remaining team members continue the project and then share the decisions and next steps with that person. The team model provides greater continuity than relying on a single participant.
It is worth coming with a potential challenge. We clarify its importance, scope, measures and roles during the kick-off with the team and sponsor.
The Leantrix / Optimum Lean Kata Green Belt certificate requires completion and presentation of the project and fulfilment of the programme requirements. The ILSSI Lean Green Belt certificate requires a passing result in the ILSSI exam.
Programme consultants
Meet selected experts who support the team from defining the challenge, through PDCA experiments, to the final presentation of the result.
Maurycy Szkolnicki
Senior Lean Consultant | Optimum
More than 25 years of Lean experience and hands-on practice in the machinery and FMCG industries. Specialises in process stabilisation, flow and building continuous improvement systems.
Kamil Müller
Lean, TWI and AI | COO, Leantrix
Combines Lean, TWI and artificial intelligence in practical operational projects. Supports problem analysis, standardisation and sustaining results.
Bartosz Misiurek
Lean and TWI | CEO, Leantrix
Since 2007, he has developed Lean and TWI in Poland and in international projects. He supports challenge selection, business value assessment and scaling proven solutions.
BRING US A CHALLENGE
Leave with measurable change.
Register a team of up to 4 people and complete a real project with support from Lean Kata Green Belt trainers.
Contact form
Interested in Lean Kata Green Belt? Complete the form. We will contact you to discuss the challenge, team composition and a convenient programme start date.
Our clients
