Senior Product Designer(Mobile Applications)

Once For All is a leading SaaS platform that simplifies compliance, procurement, and supply chain management for the construction industry. As we expand, we are developing a new marketplace app to connect buyers and suppliers efficiently. To achieve this, we are seeking an experienced Mobile App UX/UI Designer to craft an intuitive and engaging mobile experience.

Role Overview:

We are looking for a Mobile App UX/UI Designer(Contract role for 6 months) to lead the design and user experience of our upcoming marketplace app. You will work closely with product managers, developers, and researchers to ensure the app delivers a seamless, user-friendly experience. Your focus will be on mobile-first design, usability, and a clean UI that enhances engagement and conversion.

Daily rate: £400/ day

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.

Required Qualifications & Experience:

• 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.

Why Join Us?

• Work on a high-impact marketplace app for a leading SaaS platform in the construction industry.
• Fully remote and flexible freelance contract.
• Competitive rates with the opportunity to shape the mobile experience of a growing platform.
• Collaboration with a talented and passionate cross-functional team.

If you're excited about shaping a best-in-class mobile UX/UI for a new marketplace, we’d love to hear from you!