While coding is not mandatory for UI/UX designers, having a basic understanding of coding can be beneficial in creating functional prototypes and collaborating with developers. Knowledge of HTML, CSS, and JavaScript can help designers communicate better with developers and understand the limitations and possibilities of the technologies they are working with. However, many designers work without coding and focus on the visual and user experience aspects of the design process. Ultimately, the level of coding knowledge required depends on the company and the specific job role.