How easy is it to move countries in IBD?

I like to travel and plan to move countries every 3-5 years. I speak/read/write fluently in English, Spanish, and Portuguese, and can speak and read French at a basic level. I am a student at a non-target/semi-target school in Canada and have the option to learn French, German, Japanese, or Mandarin. I am planning to learn Mandarin as that opens up the possibilities to work in APAC.

I was wondering how easy is to internally transfer at a bank to another office in another country or to land a job in a country you have no connection to.