Translation of developer in German

You're from USA right?! You are learning German too? Why? Do you want to go to Germany? I'm from Italy and I used to live in Portugal for a while. Now I'm learning in order not to forget everything I learned there. Are you working?
On the first day in Hanoi, we wanted to explore the town. It was the former capital of the North and today it is the capital of the entire country. There are tons of monuments and governmental buildings.
We had never seen a similar landscape. The lagoons had different kind of colors, blue, white, green and red. They were all surrounded by rocky, dark volcanoes making the entire landscape surreal.