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Marketplace for short-term jobs Shiftgig announced today that it raised a $22 million series B round. Renren led the round, while Chicago Ventures, DRW Venture Capital, and others followed.

Shiftgig aims to connect employers with people who are looking to pick up open shifts in the hospitality, customer service, and events industries.

The investment will be used to expand the on-demand jobs services to more cities in North America. The startup said it already serves more than 270 clients in 8 cities.

Based in Chicago, Shiftgig’s funds total around $35 million since its seed round in 2012.

Correction: Shiftgig serves 8 cities, not 270. It has more than 270 clients.