Insofar as I'm not fluent in at least three languages, nor am I certain I want to work 50-60 hour weeks as a contract worker, I doubt I'm going to be applying for your job in any case. But in the meantime, in case I do become fluent in another language or two and find myself wanting to work long hours, perhaps you should explain your core values a little.
I mean, it's a good thing that on your blog, you have a post that says: "Mango Languages has six core values that we all believe very strongly in: Quality, Entrepreneurial Spirit, Positive Attitude, Innovation, Integrity, and Fundipline. Let’s chat today about Entrepreneurial Spirit." Perhaps you should consider that it isn't Entrepreneurial Spirit that people need an explanation of.