The Merchant Success Unit Manager at LikeCard is responsible for driving merchant growth and maximizing the value of partnerships. Key responsibilities include identifying growth opportunities, implementing upselling and cross-selling strategies to increase GMV by 20% yearly, maintaining merchant churn below 10%, ensuring consistent GMV performance, optimizing customer experience and response times, representing LikeCard in executive engagements, overseeing account adjustments and payment processing, and developing and tracking SLAs. The role requires strong analytical skills, data analysis proficiency, and excellent communication skills to engage with C-level executives and foster deep merchant relationships. Success is measured by GMV increases, merchant retention, customer satisfaction, and operational efficiency.