I was originally hired as the sole front end developer and employee #5. Within 6 months I had revamped the company's design process, overseen creation of the first complete set of wireframes and visual designs, hired two more developers, and became the UX and front end development lead.
Over the next year and a half I staffed my team up to 6 people (and the company up to 17), managed multiple external vendors, converted the team to agile development, and added "product manager" to my list of responsibilities.