A post-tensioning job involves reinforcing concrete structures by installing high-strength steel tendons, which are tensioned after the concrete has been poured and set. This method enhances the strength, durability, and load-bearing capacity of slabs, bridges, and other structures while minimizing cracking and material use. Workers in post-tensioning jobs typically install, stress, grout, and inspect tendons to ensure proper performance. These roles require technical skills, attention to detail, and adherence to safety protocols.