Principal Product Designer (UI Design & Digital Product Design)
£500 - £550 per day | Inside IR35
6-month contract
London – Hybrid (2 days per week onsite)
Overview
We're looking for an exceptional Principal Product Designer to play a key role in building a large-scale digital platform from the ground up.
This is a rare greenfield opportunity to define the visual identity, interaction patterns and design standards for a suite of modern digital products. Working closely with Product, Engineering and senior stakeholders, you'll create outstanding user experiences while establishing a scalable design system that will underpin the platform for years to come.
This role is ideal for a highly experienced designer with exceptional UI and interaction design skills, a strong portfolio of shipped products, and a passion for creating elegant, intuitive experiences at scale.
Role & Responsibilities
- Own and evolve the visual design language across multiple digital products.
- Create high-fidelity UI designs, interactive prototypes and detailed design specifications.
- Lead the development and governance of a scalable design system, including reusable components, design tokens and documentation.
- Define interaction patterns that deliver intuitive, accessible and consistent user experiences.
- Work closely with engineers to ensure pixel-perfect implementation and design quality.
- Translate complex business and technical requirements into simple, engaging interfaces.
- Champion accessibility, usability and responsive design best practices.
- Help shape design standards and establish UI governance across the wider organisation.
Skills & Experience
- Significant experience as a Principal Product Designer, Product Designer, UI Designer, Interaction Designer or Design Systems Designer.
- Outstanding portfolio demonstrating exceptional UI, visual and interaction design across complex digital products.
- Proven experience building and scaling design systems, component libraries and reusable design patterns.
- Expert-level proficiency with Figma and modern prototyping tools.
- Strong understanding of accessibility (WCAG), responsive design and front-end implementation considerations.
- Experience working closely with engineering teams throughout the full product lifecycle.
- Excellent communication and stakeholder management skills, with the ability to influence both technical and non-technical audiences.
Desirable Experience
- Experience defining design system strategy within greenfield environments.
- Working knowledge of HTML, CSS and modern front-end frameworks.
- Experience designing enterprise-scale platforms and complex user journeys.
- Background delivering products within regulated, public sector or highly governed environments.
- Experience contributing to product strategy while remaining hands-on with design delivery.
Contract: 6 months
Rate: £500 - £550 per day (Inside IR35)
Location: London (Hybrid – 2 days per week onsite)
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