Watch out, Amazon Fresh: a new competitor is heading into town. Instacart, the grocery delivery service that leverages the ‘sharing economy,’ is looking to expand to Seattle, according to a new posting on GeekWork, GeekWire’s job site. It’s a big step for Instacart, which has seen explosive growth since the company launched in the San Francisco Bay Area. The company is looking to hire a pair of City Managers to handle operations and growth for the company’s service in the Emerald City.