Product Designer II will design integrated B2B SaaS experiences for an English language development platform. Responsibilities include user research, usability testing, discovery, sketching, wireframing, prototyping with LLM assistance, accessibility-centered design, experimentation, and cross-functional collaboration with product and engineering. The designer will own a product area, measure outcomes, communicate tradeoffs, and contribute to the Backpack design system while creating consistent workflows across the platform.