Senior Mobile UX/Product Designer — Fintech / Subscription App

We are a pre-launch fintech startup building a mobile subscription app in the trading / investing space. We are looking for a Senior Mobile UX/Product Designer to own the end-to-end product experience and help us ship a high-converting, user-centered app from day one. You will work directly with company leadership and product marketing managers, and closely with our React Native development team, to design onboarding, core flows, and subscription experiences that turn first-time users into paying subscribers. Responsibilities • Design the end-to-end mobile app experience (iOS + Android, React Native) • Design core product flows around real-time financial data and user interactions • Own onboarding, free-tier engagement, and the subscription funnel • Create wireframes, high-fidelity prototypes, and a scalable design system • Collaborate with leadership and React Native developers to ship features fast • Analyze user behavior post-launch and iterate the UX based on data • Maintain consistency across the entire app experience Requirements • Shipped at least 2 mobile apps in production with real paying users (no years requirement — show us the work) • Strong portfolio of mobile app work, ideally in fintech, SaaS, or subscription products • Deep understanding of mobile UX patterns and user psychology • Proficiency in Figma and prototyping tools • Experience designing for React Native constraints (component behavior, platform differences) • Comfortable working with regulated financial products (disclaimers, App Store / Play Store policies for financial apps, restrictions on performance claims) • Attention to detail and a habit of designing with conversion in mind Nice to Have • Experience with A/B testing and CRO • Experience designing paywalls and subscription flows for mobile apps • Knowledge of onboarding optimization and retention strategies • Familiarity with Mixpanel, Amplitude, or Firebase Analytics Engagement • Remote, ongoing engagement (long-term collaboration, not a one-off project) • You report directly to company leadership and product marketing managers • Budget set on Upwork — please apply if it fits your expectations How to Apply Please answer the screening questions below. Generic proposals or AI-generated pitches without specifics will be skipped — we read everything carefully. • Link us to one specific mobile app flow you designed (onboarding, paywall, or core feature) — direct link to the case study, not the full portfolio. In 2-3 lines: what was the problem, what did you change. • Describe the most recent design system you used or built — tokens, component library, handoff with developers. • Tell us about a product metric you moved with one of your designs. Before/after numbers if you have them. • Have you worked on a financial, trading, or investing product before? Yes/no and one sentence on what it was.