If you are interested in a career on rails, then you are more than welcome to submit an unsolicited application.
This link gives you access to the DB Cargo Scandinavia career site. On this site you will find the current vacancies and this is also the site for unsolicted applications.
Keep in mind that DB Cargo is a major international company with subsidiaries around the world. Through our career site you can visit career sites in, for example, DB Cargo Germany or DB Cargo Netherlands.