I led the end-to-end design and development of Kai, an AI SaaS platform that helps brands track their visibility across leading AI models like ChatGPT, Gemini, Claude, Copilot, and Grok. As the sole product designer, I conducted UX research, mapped user flows, built a reusable design system, and created high-fidelity designs. I also developed the entire front-end using Next.js (React), Tailwind CSS, and TypeScript, delivering a fully coded and dynamic UI with mock data, prepared for backend integration. I worked closely with the CTO and the founder to align on data structure and ensure straightforward integration.