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Design System Architect

Marex·London, UK
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Marex Group plc is a diversified global financial services platform. The Design System Architect is a full-time Technology role based in London and reports to the Lead Product Designer. The role will own the Marex Design System (MDS) alongside the Lead Product Designer and a UI Engineer, covering tokens, components, theming, patterns, accessibility, documentation and adoption, and aims to create a standardised, self-serve system and align design and code.

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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
  • Establish and run processes for contribution, review, versioning, release and deprecation
  • Spend time with the business to understand who uses MDS and how
  • Work with product teams and development streams to identify shared patterns 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 Marex's identity and what can realistically be built

What they're looking for

  • 6+ years in product design, including time owning a design system other teams depend on
  • Strong Figma skills: variants, variables, component architecture, library publishing, token workflows
  • Comfortable with how systems are implemented in code, ideally MUI or a comparable React library, with a working understanding of React component structure
  • Comfortable using AI tools in day-to-day workflow, and experience designing and writing for AI (prompts, agent instructions, AI-driven interfaces)
  • Desirable: experience with dense, data-heavy interfaces (trading, operations, finance or similar); UX research and usability testing; prototyping; working directly with product owners, BAs and developers; AI tooling in design systems and design-to-code token pipelines; Storybook; accessibility for dark themes and dense data; familiarity with financial markets or post-trade workflows
  • Self-starter who works well in ambiguity and puts structure in place where it's missing
  • Experience bridging design and development, translating between the two and keeping them aligned
  • Pragmatic, clear and concise, comfortable wearing more than one hat in a small team

Am I a fit for this role?

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Summary written by Into Design Systems from the public job posting, without guarantee of accuracy or completeness. Always verify the details and apply on the company's official page.

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