A Card Grading job involves evaluating the condition and authenticity of collectible cards, such as sports or trading cards, based on industry standards. Graders inspect factors like centering, edges, corners, and surface quality to assign a numerical grade that determines the card's value. This role requires attention to detail, knowledge of grading criteria, and often the ability to use magnification tools for close examination. Professional grading services, such as PSA, Beckett, and CGC, employ card graders to ensure consistency and accuracy in evaluations.