Citigroup CEO Michael Corbat believes that physical office space plays an important role in shaping a company's culture. In fact, you won't find the corner offices traditionally associated with the financial services industry in Citi's NYC headquarters. Instead, the space is completely open and modern, creating multiple "collision points" that foster a culture of collaboration. In this episode, Corbat explains how making the job feel personal helps attract and retain talent, especially millennials -- who often have different career expectations than previous generations.