Principal Product Designer (Interaction Design UX and Design Systems) 550 - 650 per day (Outside IR35)London (Hybrid) x2 days onsite6 month contractOverviewWe are looking for an exceptional Principal Product Designer to join an exciting organisation building a large-scale digital platform from the ground up. This is a rare opportunity to define the visual and interaction design language of a greenfield product ecosystem. Working closely with senior product, engineering, and leadership teams, you will shape how users experience the platform, establish design standards, and create the foundations of a scalable design system. The ideal candidate combines outstanding visual craft with strong interaction design expertise and thrives in environments where they can influence both product direction and design culture. Role and ResponsibilitiesOwn and evolve the visual and interaction design language across a suite of digital productsCreate high-fidelity designs, prototypes, and user experiences that are intuitive, elegant, and accessibleBuild and maintain a scalable design system, including reusable components, patterns, and documentationDefine standards for design quality, usability, consistency, and accessibilityWork closely with engineers to ensure designs are implemented accurately and to a high standardCollaborate with product and delivery teams to translate complex requirements into engaging user experiencesChampion user-centred design and contribute to research, testing, and ..... full job details .....