Sapphire Ventures invested $3.5m in a round that took the job processing company's total funding to more than $17m.

US-based enterprise job processing platform developer Iron.io bumped its series A round up to $11.5m yesterday with $3.5m from Sapphire Ventures, the venture capital firm spun out of enterprise software provider SAP.

Sapphire’s investment was added on to the $8m first tranche, closed in September 2015, which was funded by Baseline Ventures, Bain Capital Ventures, Divergent Ventures, Ignition Partners and Cloud Capital Partners.

Iron.io has built a platform that processes hundreds of millions of messages and tasks for businesses each…