I've been a programmer at the same company for 18 years now. I'm a full time employee, but work with a lot of contractors. Here's my advice: - Find out what time you're expected to be at work, then show up on time, every day. Don't arrive late and work late thinking that you'll make up for it. Your teammates might need your expertise early in the day. It's incredibly frustrating when you're in at 7:00am and need something from a coworker who "might" show up around 10:00am. If you want to work late that's fine, but do it in addition to starting early and you'll go far. And don't make a big deal about how late you worked last night. We'll all notice how late you worked from the timestamps on your emails. - Be honest about your progress. If your code is 20% complete, don't tell your boss it's 40% done. If extra help is needed, it's best to get someone else involved early. - Dress appropriately. An untucked shirt may be fine at home, but it's not going to work in the corporate world. - Act like a professional. Throwing curse words around in meetings or even in your cube really doesn't get you very far. - Own the problems that you cause. If a program abends in production due to a change I made, I'm quick to acknowledge and own the mistake. Don't throw blame somewhere else. A buddy and I once took down the entire ATM network for a large bank because we forgot about the referential integrity on one of the main tables in the database. We went straight to our boss and told him what happened. He thanked us and asked us if we'd be making that mistake again. We said no, and we never heard about the issue again. There's lots more, of course, but most of these things are common sense. The corporate world doesn't care how 'cool' you are, or how far you've gotten in whatever the latest game is, or how much beer you can drink and still write functional code.