Summary: The Mobile App UX/UI Designer will lead the design and user experience for a new marketplace app at Once For All, a SaaS subscription business focused on supply chain governance and compliance. This contract role requires collaboration with product managers, developers, and researchers to create a mobile-first, user-friendly interface that enhances engagement and conversion. The designer will be responsible for developing wireframes, prototypes, and ensuring adherence to design systems and best practices. The position offers a fully remote working arrangement and the opportunity to impact a high-growth platform in the construction industry.

Key Responsibilities:

• Design user-centered experiences for the marketplace mobile app, from concept to high-fidelity UI.
• Develop wireframes, interactive prototypes, and user flows to illustrate design ideas.
• Ensure designs are mobile-first and optimized for iOS and Android platforms.
• Collaborate with user research teams to gather insights and refine designs based on feedback.
• Work within and contribute to Once For All’s design system, ensuring consistency across products.
• Partner with developers to ensure smooth handoff and implementation of designs.
• Advocate for accessibility and best UX/UI practices in mobile design.

Key Skills:

• 5+ years of UX/UI design experience, with a focus on mobile apps.
• Strong portfolio showcasing marketplace, SaaS, or B2B mobile product designs.
• Proficiency in Figma, including components, variables, tokens, and prototyping.
• Experience in mobile-first and responsive design, following iOS and Android UI guidelines.
• Knowledge of user testing, feedback loops, and data-driven design decisions.
• Familiarity with design handoff tools and collaboration with developers.
• Strong communication skills and ability to present design rationale effectively.
• Nice to have: Experience designing for B2B marketplaces or procurement platforms.
• Understanding of motion design and micro-interactions for app engagement.
• Familiarity with construction industry software or compliance-related platforms.
• Knowledge of front-end development principles (HTML, CSS, React Native) for better collaboration.

Salary (Rate): undetermined

City: Basingstoke

Country: United Kingdom

Working Arrangements: remote

IR35 Status: undetermined

Seniority Level: undetermined

Industry: IT