The document discusses the role of a designer in a startup. It defines a designer as a visual problem solver who uses design thinking processes like defining problems, researching, ideating, prototyping, and learning. It states that startup problems related to products, funding, traffic, sales, conversions, retention, and growth can be solved through user experience/user interface design, storytelling, branding, marketing assets, video, images, ads, public relations, pitch decks, and copywriting. It then describes a "full stack designer" as someone who takes on diverse design roles from pre-launch to growth, including creating investor decks, mockups, marketing assets, campaigns, videos, and growth hacking strategies.