Go for more than a ten, go for Eleven.
At Eleven, we believe that real growth starts where sham harmony stops. With depth, honesty and connection, we work on what really matters. We go for more than a ten, we go for Eleven: sustainable change in behaviour and collaboration.
Read our story
Experiences of clients who have really improved.
Our approach leads to clear choices and lasting change.
ElevenGroup helped us break stuck patterns and move from working harder to working smarter. The result: stronger leadership at all levels, more calm and focus in the organisation and collaboration that works better in a sustainable way - with noticeable impact for our clients.
Participants actively ask to participate and are visibly proud when they complete a programme. Eleven is distinguished by a high degree of enthusiasm, going the extra mile, strong adaptability to what the situation demands, a sharp and open mind and a practical approach.
I am grateful for two energising days in which Edith and Jolie guided our Management Team. They offer exactly what the group needs. On the basis of equality, they give the group the confidence to really show themselves.
The quality and impact of the training programme directly have a very positive influence on our internal training.
Combining logistical experience with creativity and humour, Eleven Group strengthens leadership and teams at every level.
Eleven strengthened our team with sharp alignment, insights and mirroring, which ensured focus, understanding and better collaboration.
Thanks to Eleven's leadership programme, two merged MTs are now one effective team. In addition, MT members accelerated in personal development and are now using their full potential. Jolie's customisation, keen observations and coaching - with humour where possible - took our team to a higher platform in 2025.
We make people and teams see things differently with lasting results.
Who we are
For more than 20 years, we guide organisations in breaking persistent patterns and building lasting results, not temporary solutions. We bring lightness where it feels heavy, depth where it feels stuck and direction where it feels lacking. For organisations that want more than just training; for organisations that really want to change.
Our goal
Eleven Group helps organisations, leaders and teams break persistent patterns in behaviour and collaboration. By creating a safe environment for the real conversation, beyond sham harmony, space is created for honesty, responsibility and movement. Eleven Group always works from a custom approach and focuses on sustainable behavioural change that is visible in daily practice.
Our vision
Eleven Group aims to become a leading partner for organisations looking to develop leadership and culture deeply. By building sustainable leadership programmes and academies, Eleven Group supports organisations in achieving lasting change. Thus, Eleven Group contributes to strong leadership, healthy collaboration and organisations that consciously and positively impact people and society.
What we believe in
The strength behind our approach
In-depth
We look beyond symptoms and make visible what is really going on.
Real connection
We create trust as a basis for sustainable change.
Honesty
We are clear, sincere and say what it takes to move forward.
Solution-oriented
We always translate insight into concrete steps and movement.
Our team
Meet our founders
Edith Siersma
Edith is a communications scholar (MA) with broad experience in leadership and organisational development. She combines strategic insight with clear communication and quickly gets to the heart of complex issues. Within Eleven Group, she works as a leadership trainer, (systemic) team coach and executive coach for boards and MTs.
Jolie Wapenaar
Jolie Wapenaar is a social and organisational psychologist (MA) with experience as an HR business partner, manager and MT member. She connects strategy with people orientation and has a keen sense of what teams and leaders need to grow. Within Eleven Group, she guides leaders, teams and boards as a (systemic) coach and trainer.
We work with a team of driven professionals and guide organisations in leadership, team development, coaching and culture change. Together, we get people and organisations moving and help teams grow sustainably.
This is how we get you moving
We first explore what is really going on in your team or organisation. Then we create insight by mirroring and clarifying what is happening under the surface. Then we put movement into practice with concrete, immediately applicable steps and together anchor what works for the long term.
Frequently asked questions
Practical answers to questions we often get.
What kind of organisations work with ElevenGroup?
We work mainly with medium-sized and large organisations, often internationally, in sectors where collaboration, leadership and culture are crucial. Our clients range from commercial companies to (semi-)public organisations. What they have in common: the desire to look beyond standard solutions and achieve truly sustainable development.
What sets you apart from other training agencies?
We combine more than 20 years of leadership and team development experience with systemic work and organisational consulting. This means that we do not only look at behaviour or skills, but also at underlying patterns, dynamics and context. In addition, we always work in a custom way, paying close attention to the reality of the organisation as well as to what happens between people.
What do you mean by systemic work?
Systemic work is about making unconscious patterns and relationships within teams and organisations visible. Consider questions such as: Who takes what place? What gets excluded? By working with these, clarity, movement and relaxation often emerge quickly - without becoming woolly. We always translate insights into concrete steps in practice.
Isn't systemic work too 'soft' for business environments?
We often get this question. Our experience is exactly the opposite. Systemic work is actually very effective because it gets to the heart of the matter quickly and makes persistent issues open for discussion. We always link it to organisational goals, performance and results. Gentle in the approach, clear in the impact.
Do you work with fixed programmes or custom programmes?
We almost always work with custom solutions. Sometimes we build on existing leadership programmes or interventions, sometimes we design something new together. We match the form, pace and content to the organisation, the people and the question behind the question.
What issues can we come to you for?
Among others for:
- leadership development (individual and collective)
- team development and cooperation
- coaching of leaders and professionals
- culture and organisational change
- guidance in case of tensions, transitions or growth
Often, assignments start with an exploration in which together we clarify what is really needed.
Who do we work with during a programme?
You work with one or more experienced professionals from our network, always carefully selected for the demand and context. We strongly believe in cooperation and complementarity - also within our own team.
How do you ensure lasting impact?
We focus not on 'inspiration alone', but on change that carries through into everyday work. We do this by:
- Work on concrete issues
- giving leaders and teams ownership
- linking interventions to practice
- make room for reflection and action
Sustainable growth occurs when insight and doing come together.
What does an initial introduction look like?
An introduction is always non-binding. We listen to your question, share our initial observations and think along about possible follow-up steps. Sometimes one conversation is enough to determine the direction to take; sometimes an in-depth intake follows.
Can we start small?
Sure. Many collaborations start with a pilot, a team intervention or an individual coaching programme. From there it can grow - or not. That, too, is fine.
What languages do you work in?
We work in Dutch and English, and are used to international contexts and multicultural teams.
How do we contact you?
Via the contact page on our site or by calling or emailing us directly. We are happy to meet you in person.
To inspiration
