Pros
The employees and colleagues are exceptional in knowledge and experience. What is known is known well and very well understood down to the atomic level. Therefore, Haldor Topsoe products are top of the line and state of the art. It is a great company and environment in which to learn and gain experience.
Cons
But, it is not likely the right company if you're looking for significant advancement. Since the change-over of top management in 2013 following the passing of the company's founder, Haldor Topsoe, the management style has shifted from being employee-focused and products/service-driven to being money-focused and fear-driven. This is unfortunate because the new management style has taken the enjoyment and teamwork out of the job and replaced it with dredgery, micromanagement, and distrust.