UX/UI Designer: External Contractor

UX/UI Designer: External ContractorAbout ubbu ubbu (ubbu.io) is a Lisbon-based edtech platform that teaches children aged 6–12 how tocode through game-based lessons. Built around a year-by-year STEAM curriculum with 100+ lessonsand challenges, every lesson is tied to one of the UN's 17 Sustainable Development Goals. The platformserves both schools and families, is available in four languages, and is used by thousands of studentsdaily across 20+ countries. Independent studies have shown measurable impact on students' logicalthinking, problem-solving, and academic performance.Role at a GlanceType: External contractor / freelanceReports to: Director of Product & DesignBudget: €800 to €1,000 / monthLocation: Remote, CET overlap requiredWhat You'll Do● Translate briefs and user problems into clean, considered designs under guidance● Work closely with developers to ensure designs are implemented as intended● Contribute to and learn from the design system● Iterate quickly based on feedback and communicate progress clearly● Develop an eye for the visual language of the product● Explore AI-assisted design tools as part of your day-to-day workflowWho We're Looking For● A good eye for visual craft, detail, and consistency● Portfolio showing UX and UI work, personal or professional● Eager to learn and comfortable working in a fast-moving, feedback-driven environment● Interested in how design and engineering connect● Open to exploring AI design tooling● Clear communicator who takes direction well and asks good questions● A genuine interest in education and building products that matterWhat Working With Us Looks Like Fully remote with flexibility on how and when you work, within CET hours.
You'll get close mentorship and ship real work from day one.
A mission you can stand behind: building tools that genuinely help kids learn. You don’t need to arrive knowing everything, you need to arrive ready to grow

Hiring Process: 1. Apply online (CV and portfolio) 2. Intro call + Portfolio review by Director of Product &Design 4. Present async design challenge (2–3 hrs max)