Nessa, I'm moving this to the Breaking In forum, where you'll find the answers to your questions in the forum's FAQs.

Is it possible to get a job in the game industry... Well, given that there are a lot of people who currently have jobs in the game industry I'd have to say that it's possible.

Will you surely get contracted if you complete a project? Who could/would give you that kind of guarantee? Developing a portfolio of completed projects that demonstrate your skill-set would probably be a good idea, but it's up to any individual employer to decide whether or not they want to employ you.

Do you need a license? Well, I've never heard of anything like that, but laws are different in different places.

Honestly, I'd suggest reading some of the information given in the sticky-posts at the top of the breaking-in forums that Mr. Sloper referred you to. If you're concerned about needing a license or title then you may want to try and find some professional programmers in your area that would know about that kind of thing. Or you could ask around the forums about whether or not there's here who lives in your area and knows about that kind of thing.

Just because you release a game does not mean that people will flock to you and offer you a job. You need to do some self-promoting to let people know your available to hire.