Senior PDS Piping Designers & Checkers needed by an EPC client of e-technology located in Houston, TX. 10+ years of total piping experience 3+ years of experience with PDS Refinery, Petrochemical and/or LNG experience required. Minimum of 3 years hands on experience with PDS. DUTIES: Develops conceptual layouts with minimal information during early stages of plot plan development. Capable of generating highly complex layouts. Develops plot plans for process units, or any offsite or utility area. Function as a piping checker at all levels of complexity. 3D modeling of all plant design work phases, planning or production input. Run programs for checking the status, connectivity, database reliability, interference, etc. on model design files. Run extraction programs for isometric and orthographic design files, as well as extractions of component reports for the use of material take- off purposes. Capable of 3D CADD modeling from using vendor drawings, P&IDs, plot plan and project outline scope. Training others in the use of 3D modeling, running report programs and extraction programs. Petrochemical/refinery experience is required. Houston area candidates highly preferred.  Min. 6 month Contract Sssignments MULTIPLE OPENINGS!!