The POS technology developer has closed a $22.5m round featuring retail firm Metro Group that boosted its overall funding to about $40m since 2011.

Orderbird the Germany-based developer of an iPad-based point of sale (POS) system, has completed a €20m ($22.5m) series C round featuring retailer Metro Group.

Metro and growth equity firm Digital+ Partners, which led the round, provided a combined €16.5m. Payment services provider Concardis, an existing investor in Orderbird, took part through a secondary listing.

Founded in 2011, Orderbird has created a POS sale for the hospitality industry that allows users to take orders, make bookings, run sales metrics or create…