I've been thinking a lot about the differences between the corporate and startup world (in part due to reading The Self-Made Billionaire Effect: How Extreme Producers Create Massive Value). 

In the startup world, one is often expected to wear different hats and be willing to "roll up your sleeves" and do whatever is needed. I can't tell you how many startup ads, regardless of the level or title they're hiring for, include language similar to this. Contrast this to the corporate world (or just mid to large size companies), where job descriptions and requirements are very specialized and where once hired, you often can't move from function to function without taking a demotion. 

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