Haskell, front-end development, etc.
Let me know if there are any interesting technologies you want to use. I'll find a project where you can use them.
If you can speak Japanese fluently, we pay you extra 120,000 yen.
If you can come to our office once a week, we pay you extra 360,000 yen.
As long as it's not fraud, any side-work will be permitted. You are even allowed to be a full-time worker at another company while being employed at ARoW.
If desired, I will find freelance work for you as well.