Marex is hiring a Senior Product Designer to help own the Marex Design System, built on MUI, working alongside the Lead Product Designer and a UI Engineer. The role covers tokens, components, theming, patterns, accessibility, documentation and adoption across client-facing and internal platforms. It reports to the Lead Product Designer.
What you'll do
- Own the design system: components, tokens, patterns, documentation and governance
- Shape the roadmap with the Lead Product Designer based on impact across products
- Put processes in place for contribution, review, versioning, release and deprecation
- Spend time with the business to understand who uses MDS and how
- Identify shared patterns across products and turn them into system components
- Keep Figma and code aligned, and plan migrations when they disagree
- Build components and tokens to a standard engineers can implement directly
- Work with brand and engineering so the system reflects identity and buildability
- Measure adoption and raise systems thinking across the design team
What we're looking for
- 6+ years in product design, including owning a design system other teams depend on
- Strong Figma: variants, variables, component architecture, library publishing, token workflows
- Comfortable with how systems are implemented in code, ideally MUI or comparable React library
- Working understanding of React component structure
- Comfortable using AI tools in day-to-day workflow
- Experience designing and writing for AI: prompts, agent instructions, AI-driven interfaces
Nice to have
- Experience with dense, data-heavy interfaces (trading, operations, finance or similar)
- UX research and usability testing, and prototyping
- Working directly with product owners, BAs and developers to shape requirements
- AI tooling in design systems work and design-to-code token pipelines
- Storybook
- Accessibility for dark themes and dense data
- Familiarity with financial markets or post-trade workflows