Are you looking for a new challenge as an interim finance professional, or would you like to join us as a colleague?
Or are you looking for an auditor who is personally involved with your growth as a business owner?
Q-Concepts ensures that you are equipped to make the right decisions for success, in the present and in the future.
That is our ambition! 


Our mission is as follows: ‘We are an accountancy, interim and advisory boutique firm, focused on collaboration, where senior professionals enjoy their work’. Q-Concepts wants to serve as an example of transformation in the branch. We are driven by the following objectives:

- Top 5 high end Accountancy, Interim and Advisory boutique firm in the Netherlands;
- Established name respected for quality and compliance;
- Number 1 Audit Only provider in the Netherlands;
- Top 5 employer.


Our partners don’t spend their days on the golf course, but rather get involved in audits and maintaining client contacts. We prefer to work together and as a team, in an informal setting without hierarchy. Our senior professionals work very hard to achieve client satisfaction. Our professionals have a love for the profession, substantive sector knowledge and are personally involved. They have in-depth understanding of their profession and first-hand experience of running a business. This is exactly why we also send our financial auditors and IT auditors on interim assignments. It means they keep up with daily practices and can act as the perfect sparring partner for entrepreneurs.

Core values

Our credo is 'Dare to be Different'. This is made up of three core values: Passion, Reliability and Quality. These core values are further elaborated in the measurable activities below, where we call each other to account and ask for client feedback.

Passion / Go for the extra mile

We are proactive
We surprise our clients
We surprise our Qolleagues
We do anything for a smile

Reliability / Practise what you preach
We keep our promises
We do what we say and we say what we do
We take responsibility and bear the consequences
We comply with internal frameworks

Quality-focused working / Go for quality
We strive for optimum quality
We distinguish ourselves in quality by way of the Q-Academy, Q-MD center and the Q-audit file


Q stands for Quality. We are at the forefront of reform within the accountancy sector and are regarded as the ultimate accountancy firm of the future. We are innovative, pioneering, and developing all the time. IT plays a big part in this. Our expertise and network are at your disposal; for instance, you can take part in our Q-pe Academy free of charge. Thanks to our unique approach with senior professionals (mostly ex-Big4 and CPA accredited), we can work more efficiently to deliver high quality for a competitive fee.
We dare to be different!


​As well as service providers, we are also entrepreneurs. This means we are well aware of the challenges you face. Our founders started Q-Concepts in 2010. We have now grown into an organisation with more than 70 members of staff, spread across our locations in Den Bosch, Rotterdam and Maastricht. From these locations, we offer our services to the Dutch market. We serve various organisations; from SMEs and housing corporations to large companies, healthcare institutions and banks & insurance companies.


Faster on your own, but further together. Our professionals work as advisors or specialists and contribute directly to the success of our clients. Our skilled professionalism goes hand in hand with trust and responsibility. Our staff members describe the Q-DNA as follows: Quality, Love for the Profession and Team Spirit.

Are you interested in advancing your career at Q-Concepts? Have a look at our working at page.

Social responsibility

Q-Concepts aims for the highest achievable level. Offering services of high quality from an intrinsic motivation to serve public interest. We play an active role in the public debate on the integrity of and trust in audit & assurance.


We offer colleague accountingfirms a unique collaboration. We have an AFM license and are authorised to act as external auditor for your client. You maintain the other services for your client, without having to get involved in the severe licensing requirements and compliance associated with the implementation of (IT) audits. We are purely an audit-only office and respect your existing business relationships.

International collaboration

Q-Concepts can also provide international services. We are a member of the international collaboration AGN International. AGN International has members from more than 80 countries, with more than 200 members and approximately 9000 professionals in employment. This means we can call on a large international expertise network of local specialists to provide you the best service across borders. For instance, we can offer support with the audit of your annual accounts, and help you find a foreign auditor or advisor. Does you business take you abroad already, or do you have international ambitions? We can help businesses advance, together with our international AGN partners.

Our managing team and staff

Cor Pijnenburg

Audit & Transaction Practice, International Business

Boudewijn Daris

Audit Specialist Housing Corporations

Willem van Zutphen

Specialist Healthcare

Martijn Boelhouwers

Audit, Audit Only Specialist, responsible for our Rotterdam office

Erwin Tak

Banking & Investments, Fund Accounting Specialist

Jos Adriaans

Specialist Healthcare

Arnoud Albada

Specialist Banking & Investments, Portfoliomanagement & Trading

Clemens van der Werf

Recruitment, Interim & HR

Erik Kalnenek

Non Profit Specialist, responsible for our Maastricht office

Wilko de Vos

Specialist Audit

Thijs van de Schans

Specialist Audit & Transaction Practice

Martijn Lomme

Specialist Advisory Housing Corporations

Lennard Pluymen

Specialist Real Estate

Tim Kolen

Non Profit Specialist

Wendy van Eijk

Specialist Healthcare

Kevin van der Veer

Subsidy Specialist

Flip van Ooij

IT auditor & advisor

Chiel Meulendijks

IT auditor & advisor

Netty Schouten

Office Manager

Elaine Stams

Office Assistant

Do you have the Q-DNA? Come and enhance our team


Due to continuous growth, we are looking for professionals across the Netherlands to join our team.


We are proud member of AGN.

Our pride

We work incredibly hard every day to achieve customer satisfaction and qualitative growth as well as personal growth.

Den Bosch


  • Rivium Boulevard 224
  • 2909 LK Capelle aan den IJssel


  • Poststraat 8
  • 6135 KR Sittard


  • Vossenstraat 6
  • 6811 JL Arnhem


  • Burgemeester Stramanweg 101
  • 1101AA Amsterdam
Maak kennis met Q-Concepts. Doe de DNA test!