About United Metal Fabricators. United Metal Fabricators (UMF) is a well-established sheet metal fabrication business located in Worcester, MA. UMF is a specially qualified producer of hardware and structural components for GE gas turbine engines used for power generation around the world. Now under new ownership, UMF is poised to grow rapidly. Open Role. Quality Control Associate. Experience Level. Entry-Level. Job Type. Full-time or Part-time, ...