Editing head of marketing ad

Adding more detail to content - @anothertompetty thoughts?
I like this. Perhaps we could phrase it something like: `As head of marketing, you will be instrumental in establishing GoCardless as the leading recurring payments provider in Europe. Working closely with the founders of the company, you will be responsible for driving growth by: ensuring we tell a compelling story; have strong voice in the marketplace and; use the right means to reach the right people.`