Senior Product UX/UI Designer with Fluent Japanese

We are looking for an experienced Senior Product UX/UI Designer with Japanese to contribute to digital product development for an established international consumer brand.You will design intuitive, visually engaging experiences for B2C and B2B SaaS products and mobile applications, working closely with product managers, developers and other designers.Location: Remote – European UnionStart Date: 2 November 2026Duration: Until June 2027 (approximately 8 months)Working Hours: Approximately 20 hours per week, with occasional US time-zone overlapResponsibilitiesLead UX/UI design activities from product discovery to high-fidelity delivery.Conduct user research, identify user needs and translate findings into design solutions.Create user flows, wireframes, prototypes and polished UI designs.Work with existing Figma design systems, components and design tokens.Facilitate workshops and communicate design decisions to stakeholders.Collaborate with cross-functional product and engineering teams.Contribute to usability testing and continuous product improvements.Support pre-sales activities and mentor junior designers where required.Use AI tools appropriately to improve design and research workflows.RequirementsMinimum 5 years of professional UX/UI design experience.Fluent Japanese (mandatory) and strong professional English.Advanced proficiency in Figma.Strong experience working with and maintaining design systems.Practical experience in product discovery, user research and usability testing.Strong understanding of design thinking and feature prioritisation.Experience designing B2C/B2B SaaS products or mobile applications.Ability to create high-quality, responsive and accessible user interfaces.Strong portfolio demonstrating end-to-end product design.Excellent communication and stakeholder collaboration skills.Nice to HaveExperience facilitating discovery workshops.Pre-sales participation.Knowledge of HTML, CSS and JavaScript.Experience using AI-assisted design tools.Working ArrangementThis is a part-time remote contract available to candidates based in the EU, with initial sourcing focused on Poland, Romania, Bulgaria, Czechia, Slovakia and Spain.The typical schedule is approximately four hours per working day, with occasional full-day sessions balanced against other scheduled hours. Some meetings may require availability until 20:00 Central European time.Recruitment ProcessInitial recruiter screening.Technical interview.Design assessment task.Technical task presentation interview.To apply: Please submit your CV, portfolio link, availability and expected hourly rate. Japanese fluency is essential.