Four values are the core of everything we do: we are reliable, solution-oriented, people-oriented and we have an entrepreneurial spirit. These values are carefully embedded into our culture. That our customers (and employees) recognize these values in our solutions is a motivation to keep on developing our business, products and working methods.


“In the past I often tried another installer. For me, it is important that the installer gets the work done in the timeframe we anticipated. An installer often will make this promise, but will not keep it. De Jong keeps word and that makes them a reliable partner.” – Matthijs Jaw, Skepp design+build.

As a customer you value reliability. We understand that. Therefore, we always keep our customers fully informed regarding the work process.

  • We are transparent, open and honest;
  • A deal is a deal: we keep our word;
  • We never run away from our responsibilities.


“We selected A. de Jong Group during a tender. They told us precisely how they would organize our building. These solutions were exactly what we needed, leaving us with a clear decision to make: De Jong.” – Jolande Huijers, former director Beurs WTC Rotterdam.

De Jong thinks in solutions. When it comes down to climate issues or combustion-related questions, we have the right answers. In the meantime you can continue to excel in your core business.

  • We are customer-focused and offer customized solutions;
  • Our employees are professional, creative and flexible;
  • Your question is what matters to us. We think along with you. And more importantly, we think ahead and create sustainable opportunities.


“I experienced a warm welcome during my job interview. I got the job and quickly learned that the openness and genuine interest are real corporate values. This makes De Jong a pleasant working environment for me.” – Geert-Jan van Kessel, ICT Manager.

We highly value personal contact within the organization, but also in our relationship with clients.

  • Committed, warm and familiar; that’s how we approach each other;
  • We maintain personal and direct relations with each other;
  • We build long-term relationships with our clients and partners;
  • De Jong gives employees the opportunity to always keep developing themselves.

Entrepreneurial spirit

”Continuity is an important thing at A. de Jong Group. We focus on the long term, but also move with the time. We work with the latest technologies to serve our clients the best possible service.” – Albert de Jong, CEO A. de Jong Group.

We are a stable, steady and entrepreneurial organization.

  • De Jong is ambitious and has a clear vision on development and innovation;
  • Despite the long history of De Jong, we are constantly renewing the company;
  • We share and use our knowledge gained by experience on a daily basis.

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