As a US-based company, we hire the right employees indefinitely, meaning steady work for a long time. While our normal hours are 9 am to 5 pm CST (UTC-6) Monday through Friday, you have a lot of flexibility. All that we ask is that you're working the hours and responding to emails and skype requests during this period with a reasonable response time.
As for the work, you will be working full time on a variety of projects, ranging from Wordpress custom development to frameworks like Yii, CodeIgniter, and Laravel.
Strong communications skills are essential! Communication is the most important aspect since you will be working remote. I can't stress this enough!
You also need a strong Linux/UNIX background, and experience with git. You should be comfortable committing your code to a repository and merging in changes. No exceptions!