Keywords: Senior Drainage Engineer, Water Resources, CAS Consulting, Hydrology, Hydraulics, H&H Modeling, Austin Engineering Jobs, PE License, FEMA Map Revision, Stormwater Management, Stream Restoration, OpenRoads, Microstation, TxDOT, Civil Engineering, Municipal Design. For 25 years, CAS Consulting & Services has been a cornerstone of Texas infrastructure, specializing in the rehabilitation, expansion, and development of water/wastewater systems, watershed management, and transportation networks for major cities throughout the state.