This can be tough (but also awesome), whatever you do make sure communication is clear and there is a written contract in place. Some companies will place clai

This can be tough (but also awesome), whatever you do make sure communication is clear and there is a written contract in place. Some companies will place claim on your invention saying you developed it while you were an employee and so they own it. Depending on your employment agreement and the Country & State you reside the success of this will depend. But that doesn't stop them from trying to bully you, so just be cautious. They may be good people and have no mal intent, but you just need to make sure you do everything in clear, open communication and in writing for everyone. And when you talk to them about it just say that, you are just trying to make sure everything is spelled out and clear so there are no misunderstandings because you enjoy your work and you love your side project as well. Good people will be good with that, weasels will get weasely.