UI/UX Product Designer for Web Application

UI/UX Product Designer (Web, B2B SaaS) Modus is a seed-stage B2B SaaS company building infrastructure that helps enterprise teams get reliable AI answers about their own internal business data. We're looking for a product designer to shape our web application. This is a web application role, not mobile. Who you are: You've designed complex B2B/enterprise SaaS products: developer tools, data platforms, or technical infrastructure. Not just consumer apps. You're comfortable with dense, information-rich UIs (configuration, permissions, settings) and keep them clear instead of cluttered. You've designed for both technical power users and non-technical end users in the same product. You know AI/agentic product patterns: chat interfaces, conversational UX, human-in-the-loop flows, and surfacing model reasoning. You've built a design system from scratch. What you'll do: Run user research, build wireframes and prototypes. Work closely with our engineering team through implementation. Establish and own our design system.