Employment Oshkosh Industrial Roofing & Sheetmetal, LLC. Oshkosh Industrial is a team committed to exceptional roofing performance, quality, and safety. We are currently accepting applications for roof mechanics, and no roofing experience is necessary. We are a drug free workplace. Please feel free to download and complete an employment application or send your resume via fax ((920) 235-3878), or traditional mail (P.O. Box 1, Winnebago, WI 54985).