Steve Pereira has spent his career on a problem that lean practitioners know well but rarely solve cleanly in technology environments: you can't improve what you can't see. Working with technology and service organizations, he developed Flow Engineering, a methodology that adapts value stream mapping for software delivery and knowledge work -- where value streams are invisible and work flows through systems rather than factory floors. He co-authored Flow Engineering: From Value Stream Mapping to Effective Action and serves as a board advisor to the Value Stream Management Consortium. He leads flow engineering for LEI's LeanTech initiative, helping organizations move from mapping to action in environments where speed and complexity make standing still costly.