Once For All is a highgrowth cloudbased SaaS subscription business. Our technology helps our customers to manage their supply chain governance risk management and compliance. We work across public and private sector and have over 250k customers across the UK across 20 different sectors including construction transport retail hospitality education facility and property management manufacturing local and central government.
Role Summary:
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 userfriendly experience. Your focus will be on mobilefirst design usability and a clean UI that enhances engagement and conversion.
Job Responsibilities:
- Design usercentered experiences for the marketplace mobile app from concept to highfidelity UI.
- Develop wireframes interactive prototypes and user flows to illustrate design ideas.
- Ensure designs are mobilefirst 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 Alls 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.
Knowledge Skills Experience and Qualifications:
- 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 mobilefirst and responsive design following iOS and Android UI guidelines.
- Knowledge of user testing feedback loops and datadriven 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 microinteractions for app engagement.
- Familiarity with construction industry software or compliancerelated platforms.
- Knowledge of frontend development principles (HTML CSS React Native) for better collaboration.
Why Join Us
- Work on a highimpact 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 crossfunctional team.
If youre excited about shaping a bestinclass mobile UX/UI for a new marketplace wed love to hear from you!