Hiring a Heuristic Evaluation developer can significantly improve the usability of your product. They apply established usability principles (heuristics) to identify potential design flaws, providing you with actionable insights to enhance user experience. Their expertise can help spot issues that may be overlooked, saving time and resources in rectifying problems later. They can also contribute to a more user-friendly design, leading to increased user satisfaction, engagement, and ultimately, business success. Their contribution is particularly vital in the early stages of design, making them an essential part of any development team.