Senior Product Design Engineer

pbThis position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Product Design Engineer based in Belgium. /b /p pOwn core product experiences end to end, combining exceptional product design judgment with strong design engineering skills. /p pYou’ll turn ideas and prototypes into production-ready components that are accessible, robust, and ready for engineers to use directly. /p pThe role sits at the intersection of product design, frontend engineering, design systems, and interaction design. /p pYou’ll build and evolve reusable primitives while continuously improving a shared open-source component library. /p pYou’ll work with modern AI development tools to prototype quickly, explore ideas, and accelerate the path from concept to production. /p pThe environment is remote-first and async, with a high degree of autonomy, direct feedback, and a strong emphasis on craft and thoughtful collaboration. /p pThis is an opportunity to shape both the product experience and the design system behind a globally used scheduling platform. /p h3Accountabilities /h3 ul liOwn core product surfaces from concept through production, including booking flows, scheduling primitives, and team and enterprise experiences. /li liTranslate product problems and hypotheses into high-quality designs, prototypes, and production-ready frontend components. /li liBuild and test working prototypes using modern AI-assisted development tools such as Claude Code, Cursor, and v0, selecting the fastest approach for answering product and design questions. /li liDeliver components that product engineers can use directly, ensuring correct semantics, complete interaction states, accessibility, and production-quality implementation. /li liDesign, engineer, and maintain custom components and primitives rather than relying on generic third-party UI libraries. /li liContinuously improve the shared component library by auditing existing primitives, identifying gaps, refining patterns, and contributing reusable components rather than creating one-off solutions. /li liMaintain consistency across tokens, spacing, states, dark mode, motion, and interaction patterns, ensuring every new product surface strengthens the overall design system. /li liApply motion and animation thoughtfully, using it to clarify interactions and improve the experience without adding unnecessary complexity. /li liOwn outcomes rather than simply delivering design artifacts by framing hypotheses, defining success criteria, supporting implementation, and evaluating results. /li liMaintain a high accessibility standard across all work, including keyboard navigation, focus management, semantics, contrast, and motion preferences. /li liRefine the details that elevate product quality, including empty states, error messaging, loading behavior, transitions, and other interaction nuances. /li liCollaborate openly with product and design leadership, sharing work early, incorporating feedback, and allowing technical and product constraints to inform design decisions. /li liDocument design thinking and decisions through written documentation, prototypes, and recorded walkthroughs to support effective asynchronous collaboration. /li /ul h3Requirements /h3 ul liProven experience as a product designer who has evolved substantially into design engineering, with ownership of complex and ambiguous product areas from problem definition through launch and iteration. /li liExceptional product design craft combined with strong frontend engineering skills in HTML, CSS, TypeScript, and React. /li liDemonstrated ability to independently turn product and design concepts into polished, working implementations without relying on another engineer to make ideas production-ready. /li liStrong experience designing and engineering custom UI components and primitives, rather than primarily consuming third-party component libraries. /li liDeep expertise in headless primitive composition, with experience using Base UI, Radix, or similar technologies; direct experience with open-source component systems is a strong advantage. /li liStrong understanding of motion design principles, including timing, easing, choreography, and the judgment to determine when animation adds value. /li liDaily experience using AI-assisted development tools such as Claude Code, Cursor, v0, or comparable solutions. /li liDeep familiarity with web standards and browser-native platform primitives, with the ability to understand what the browser already provides before introducing additional libraries. /li liProven experience building and maintaining design systems, including understanding the distinction between reusable primitives, components, and product-specific patterns. /li liStrong accessibility knowledge covering WCAG, ARIA, assistive technologies, keyboard interaction, focus management, and accessible design patterns. /li liAbility to understand the technical architec