I had a contract offer for around 1000 euros per day from a large company in a Scandinavian country to do development on big data systems. Assuming you take some days off for vacations etc, it comes down to over 200k euros per year. (I didn't take that offer, because I didn't want to move).
Development in this field is usually done in Scala, but the important part is knowledge of the crazy sprawl of various big data engines/frameworks/solutions. I have around 5 years of experience doing that. The job pays so much because there is currently severe shortage of people in this field who have more than 0-2 years of experience, and also since a lot of the companies believe that big data is totally the future and they absolutely must get into it right now or they'll be left behind (which translates into huge budgets for projects and for hiring).
Development in this field is usually done in Scala, but the important part is knowledge of the crazy sprawl of various big data engines/frameworks/solutions. I have around 5 years of experience doing that. The job pays so much because there is currently severe shortage of people in this field who have more than 0-2 years of experience, and also since a lot of the companies believe that big data is totally the future and they absolutely must get into it right now or they'll be left behind (which translates into huge budgets for projects and for hiring).