Senior Product Designer

Client Overview:
Our client is a rapidly growing global LegalTech and AI software company headquartered in Tokyo and San Francisco specializing in AI-powered contract review legal research and enterprise compliance solutions. Serving thousands of organizations worldwide the company combines Generative AI capabilities with enterprise-grade SaaS platforms to help legal and corporate teams automate complex workflows improve operational efficiency and accelerate decision-making processes.

As part of its global expansion and product innovation strategy the company is heavily investing in next-generation AI-driven product experiences. The organization operates in a highly collaborative environment where product engineering and design teams work closely to build intuitive scalable and business-critical enterprise platforms for international markets.

Job Role:
The Senior Product Designer will lead end-to-end UI/UX design initiatives for complex AI-powered B2B SaaS platforms focusing on building intuitive enterprise experiences advanced AI interaction models and scalable design systems. Acting as a strategic design leader this role is responsible for transforming highly complex legal and business workflows into user-friendly digital experiences while balancing technical feasibility business objectives and user satisfaction.

The ideal candidate is a highly experienced product design professional with strong expertise in enterprise SaaS platforms UX research Generative AI-driven interfaces and scalable design systems capable of leading high-impact product modules in a fast-paced international technology environment.

Key Responsibilities:

• Lead end-to-end UI/UX design and architecture for major enterprise SaaS product modules.
• Design AI-driven user experiences advanced search interfaces and intelligent workflow systems.
• Conduct UX research usability testing user interviews and data-driven design analysis.
• Collaborate closely with Product Managers and Engineers to deliver scalable and technically feasible solutions.
• Develop and maintain scalable Figma-based design systems and responsive UI components.
• Support multilingual product localization and cross-platform consistency.
• Utilize AI tools and rapid prototyping methods to accelerate design workflows and product iteration cycles.
• Advocate for design excellence and continuously optimize internal design processes.

Candidate Requirements:

• Bachelors Degree in Design HCI Computer Science Business or related fields.
• Minimum 3 years of hands-on experience in UI/UX or Product Design for Web Services or B2B SaaS products.
• Proven experience leading complex product modules or acting as a Design Lead.
• Advanced proficiency in Figma and scalable design systems development.
• Strong understanding of UX research methodologies usability testing and iterative product improvement.
• Experience utilizing Generative AI workflows or designing AI-powered interfaces.
• Strong communication and stakeholder management capabilities.
• Professional fluency in English is mandatory; Japanese fluency is required for daily communication.

Job code: #663