A CRM developer will often specialise in a particular CRM technology, both customising and developing CRM systems for a certain vendor or implementation partner. Freelance CRM developers are also very common, and develop customised CRM systems, tailored to their clients' requirements.
Dusseldorf is the seventh most populous city in Germany and a major financial and business hub, located centrally within Europe. Of the 30 largest companies listed on the Stock market, two of the DAX companies have their headquarters here.
In recent years, the city has become the most important and largest telecommunications centre in Germany, with Vodafone and E-plus located here, meaning that Dusseldorf now leads the German mobile phone market by quite a margin. As well as this, many foreign information and communication technologies companies have chosen to relocate to the city.
Other industries which play an important role for economic growth are advertising - with Dusseldorf being home to over 400 advertising companies, publishing and insurance.