Senior Product Designer - UX

You’ll be the dedicated design owner for our B2B products, leading end-to-end design across international payments, FX, expense management, and core client journeys—from discovery through delivery. You’ll work sprint-ahead with Product and Engineering so validated, engineering-ready designs are ready before sprint planning. A core part of the role is establishing and evolving the B2B design system (components, patterns, tokens, and interaction standards), and embedding prototyping and usability testing into discovery to de-risk decisions early. End-to-end B2B product design across Payments, FX, Expense Management, and B2B client journeys — working sprint-ahead across active B2B tracks - B2B design system — organise, document, and evolve the component library (patterns, tokens, variants, and interaction standards) with lightweight governance for consistent delivery - Discovery prototyping — create clickable prototypes to validate direction and de-risk solutions early - Engineering-ready handoffs — specification-quality Figma files delivered ahead of sprint start (states, edge cases, and interaction notes where needed) - Accessibility-by-default — apply inclusive design practices and ensure core journeys meet WCAG expectations where applicable - B2C vendor design oversight (secondary) — review, challenge, and steer outsourced design output to protect standards You will inherit the design system built by the contracted designer during a structured onboarding overlap. Your first priority is understanding component ownership and documenting any gaps before the contractor departs. 5+ years as a Senior UX/UI Designer with FinTech, complex B2B SaaS, or financial workflow product experience - A portfolio featuring strong examples of product design work across commercial apps - Impressive design skills across iOS, Android, and web platforms - The ability to think at a high level about product strategy and articulate design decisions clearly - A solid understanding of the technical implications of design decisions - Design system ownership — has maintained a component library inherited from others, not just used one - Sprint-ahead discipline — understands that design is a constraint on engineering velocity and operates accordingly - A focus on UX and a deep understanding of human behaviour - Clean visual design sense with strong skills in typography and grids - Strong research practice — usability testing, prototype validation, and translating findings into design decisions - Figma proficiency — auto-layout, component variants, and design token standards - Able to operate independently and make design decisions with authority without waiting for management direction -