An Overland Park software company recently closed a multimillion-dollar investment round to bolster its technology that improves the efficiency of water infrastructure. Optimatics LLC nabbed $4.5 million from several investors, allowing it to add sales and marketing staff, and expand its software. Emerald Technology Ventures, based in Zurich, led the round, which also took on several private investors. "Over the last two years, we've said 'We're not going to be consultants, we're going to put the…