Lead Product Designer sought for a fast-rising AI startup building a B2C mobile app with a proprietary LLM. This role requires full ownership of UX strategy, IA, and UI design, establishing interaction principles for AI dialogue and multi-modal interfaces. Ideal candidates have 5+ years of mobile B2C shipping experience, Figma proficiency, and business-fluent English with conversational Japanese.
Key Highlights
Key Responsibilities
Technical Skills Required
Benefits & Perks
Nice to Have
Job Description
Company Description
Our client is a fast-rising AI startup creating their own proprietary LLM that is searching for a Lead Product Designer for its B2C-focused mobile app. The primary language would be English with conversational Japanese required as well for internal interactions. The salary would be up to 15M JPY / annum and you'd work on a hybrid system of 2-3 days a week in office.
Position Description
This position takes complete ownership of the UX strategy, information architecture, and UI design for an upcoming global consumer platform driven by advanced, proprietary AI. You will establish unique interaction design principles for complex AI agent dialogue models and multi-modal interfaces while building and operating a scalable design system from scratch. Additionally, you will lead international user research to drive multicultural UX adaptation, transforming technical complexity into intuitive and trustworthy product experiences for global markets.
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Ideal Candidate
- 5+ years of experience shipping top-tier mobile as a senior or lead designer, ideally B2C
- Well-versed with Figma with a proven background building and maintaining complex design systems.
- Business-fluent English skills with conversational Japanese
- Comfortable to take ownership and potentially lead the design team
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Why Join?
+Massive Financial Backing: Excellent funding allowing for a multi-year runway and deep stability without losing startup speed.
+Silicon Valley-Tier Perks: Enjoy premier compensation paired with highly progressive benefits
+True Work Flexibility: Complete flextime with a permanent, country-wide remote option, fully supported by relocation packages and ongoing global language programs
+Define Next-Gen AI: Move past standard API wrappers to design foundational interfaces for actual next-generation intelligence
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