Leak-proof welders operate a pulse welding machine, stud welder, cutting torch, plasma cutter, grinder, and jib crane to assemble 3 phase/Switch module/Regulator tanks with leakproof seams. Ability to lift up to 50 LBS; bend, twist, grab, reach, stand, walk, push, pull, use both hands to lift and lower materials, and perform all other essential duties with or without reasonable accommodations.