As founding designer at Leesy, a fast-growing proptech startup, I built the design function from zero, establishing brand identity, designing core product experiences, and executing digital marketing campaigns in a fast-paced, ambiguous startup environment. I partnered directly with product and engineering to optimize user flows, launch A/B testing frameworks, and ship features that increased market share by 17%. Simultaneously directed growth marketing, designed and launched a referral program that achieved a 10x reduction in customer acquisition costs and 35% increase in retention, delivering measurable business impact across brand, product, and growth.