Design Manager - Mercari Marketplace

📍 Job Overview

Job Title: Design Manager - Mercari Marketplace

Company: Mercari, inc.

Location: Minato City, Tokyo, Japan

Job Type: Full-time

Category: Design Management / Product Design

Date Posted: September 3, 2026

Experience Level: 5-10 Years

Remote Status: Hybrid (Office: Roppongi)

🚀 Role Summary

• Lead end-to-end design for critical areas of the Mercari marketplace, ensuring exceptional user experience quality for millions of users.

• Define and elevate the design quality bar and experience direction across the marketplace, establishing scalable patterns and robust critique processes in collaboration with the design system team.

• Drive product strategy by making prioritization decisions for ambiguous business and user problems, guiding the team towards a clear and impactful experience vision.

• Shape the design organization's structure, team composition, and designer assignments, taking accountability for overall team performance, health, and individual growth.

• Spearhead designer hiring initiatives, design effective onboarding experiences, and foster career development through constructive feedback and performance reviews.

📝 Enhancement Note: This role is positioned as a Design Manager, indicating a blend of hands-on design contribution and significant people management responsibilities. The emphasis on "end-to-end design in key areas" suggests that while leading, the manager will still be involved in the design process itself, rather than solely overseeing. The "hybrid" work arrangement with a specified office location implies a need for some in-person collaboration, despite the "telecommute" classification in the source data which likely refers to broader remote work allowances.

📈 Primary Responsibilities

• Spearhead hands-on, end-to-end design for strategic areas within the Mercari marketplace, maintaining overall accountability for the quality and consistency of user experiences.

• Establish and continuously improve the experience direction and design quality standards for the marketplace by developing and implementing design patterns and critique processes in conjunction with the design system team.

• Navigate ambiguous business and user challenges to define clear priorities and steer the design team toward a cohesive and effective experience strategy.

• Strategically shape team composition, assign designers to projects, and proactively manage team performance and overall health to foster a productive and collaborative environment.

• Lead the recruitment of new design talent, design and implement effective onboarding programs, and actively support the professional growth and career development of each team member through regular feedback and performance evaluations.

• Cultivate strong partnerships with Product Managers, Engineering Managers, and UX Researchers to collaboratively shape product direction and influence the strategic roadmap.

• Proactively identify emerging problems and opportunities beyond immediate project scopes, proposing innovative ideas, concepts, and improvements to drive continuous evolution of the marketplace.

📝 Enhancement Note: The responsibilities highlight a dual focus: driving design excellence through direct contribution and strategic leadership, and building a high-performing design organization. The emphasis on "shaping team composition and designer assignments" and "leading designer hiring" clearly indicates a significant people management component.

🎓 Skills & Qualifications

Education: While no specific degree is mandated, a strong foundation in design principles is implied through the experience and skill requirements.

Experience: Minimum of 2 years in design management, with a preference for 6+ years of overall professional product/UX design experience.

Required Skills:

• Design Management: 2+ years of experience leading design teams and initiatives.

• Core Design Expertise: Strong proficiency across UX, interaction, and visual design, with a meticulous eye for detail and craft.

• Complex Problem Solving: Proven ability to lead design in ambiguous or complex problem spaces, shaping product direction through concept development and compelling storytelling.

• Design Systems: Deep understanding of design systems, scalable patterns, and maintaining brand and user experience consistency across large-scale products.

• Mentorship & Quality Improvement: Experience in elevating a team's output quality through constructive feedback, mentorship, and performance guidance.

Preferred Skills:

• Product Design Experience: 6+ years of professional experience in product design or UX design, with a track record of owning end-to-end user experiences.

• Marketplace/E-commerce: Design experience within marketplace, e-commerce, or transactional product environments.

• Team Growth: Experience in developing designers into high-impact roles aligned with their strengths and career aspirations.

• Organizational Growth: Experience managing a design organization that spans multiple teams or product areas.

• Portfolio: A strong portfolio or website showcasing past design work and impact.

• User Research: Familiarity with user research methodologies and demonstrated ability to apply research insights to inform design decisions.

• Market Specificity: Professional experience in the Japanese market or experience designing products specifically for it.

• Agile Development: Comfort with experimentation, prototyping, and rapid iteration in high-uncertainty environments.

• Hiring Expertise: Experience contributing to designer hiring processes, including defining role requirements, designing interview frameworks, or employer branding.

• AI Tool Proficiency: Demonstrated use of AI tools in daily design work, with experience reshaping workflows from exploration to prototyping.

Language:

• Japanese: Proficient (CEFR B2) or above is required.

• English: Proficient (CEFR C1) is required.

📝 Enhancement Note: The language requirements (Japanese B2+, English C1) are crucial and indicate the need for strong communication skills in both languages for effective collaboration with local teams and international stakeholders. The preference for marketplace/e-commerce experience and Japanese market familiarity suggests a focus on domain-specific knowledge. The explicit mention of AI tool usage indicates the company's forward-thinking approach and expectation for designers to leverage emerging technologies.

📊 Process & Systems Portfolio Requirements

Portfolio Essentials:

• End-to-End Case Studies: Showcase at least 2-3 comprehensive case studies demonstrating ownership of the entire design process, from problem identification and user research to final implementation and iteration.

• Design Leadership Examples: Include examples of how you have mentored designers, improved team processes, or contributed to the growth of a design function.

• Design System Contribution: Highlight instances where you have worked with or contributed to design systems, demonstrating an understanding of scalability and consistency.

• Problem Framing & Solution: Clearly articulate complex problems, your approach to framing them, and how you developed and validated solutions, showcasing strategic thinking.

• Impact Metrics: Quantify the impact of your design work using relevant metrics (e.g., conversion rates, user satisfaction, task completion times, engagement).

Process Documentation:

• Workflow Optimization: Provide examples of how you have analyzed and improved design workflows to enhance efficiency, collaboration, and output quality.

• Critique & Feedback Mechanisms: Demonstrate experience in establishing or participating in effective design critique sessions and feedback loops that drive improvement.

• Cross-functional Collaboration: Illustrate processes for effective collaboration with Product Management, Engineering, and Research teams, ensuring alignment and shared understanding.

• Scalability & Pattern Development: Showcase how you have contributed to the development and adoption of scalable design patterns and systems.

📝 Enhancement Note: For a Design Manager role, the portfolio should not only showcase individual design craft but also leadership, strategic thinking, and the ability to build and guide a design team. Emphasis should be placed on demonstrating how the candidate has influenced product direction and improved organizational design processes.

💵 Compensation & Benefits

Salary Range: Based on industry benchmarks for Design Managers with 5-10 years of experience in Tokyo, Japan, with strong English and Japanese proficiency, the estimated annual salary range is ¥10,000,000 - ¥15,000,000 JPY. This range accounts for the complexity of the role, the responsibilities involved in managing a team and influencing product strategy, and the high cost of living in Tokyo.

Benefits:

• Flextime Work Arrangement: Full flextime with no core hours, allowing for significant flexibility in managing work schedules.

• Career Development Support: Opportunities for professional growth, including mentorship, performance reviews, and potential for advancement within the design organization.

• Performance Reviews: Regular performance reviews to guide career progression and skill development.

• Health and Wellness: Comprehensive health insurance and wellness programs (details to be confirmed).

• Employee Stock Options/Grants: Potential for equity participation in a growing tech company (details to be confirmed).

• Relocation Assistance: Support for international candidates relocating to Japan (details to be confirmed).

Working Hours: Full flextime, with no core time or flexible time specified, suggesting maximum autonomy in scheduling work hours to align with project needs and personal life.

📝 Enhancement Note: The salary estimate is based on general market data for similar roles in Tokyo. Actual compensation will depend on the candidate's specific experience, qualifications, and negotiation. The benefits highlight Mercari's commitment to employee well-being and professional development, with a strong emphasis on flexible working arrangements.

🎯 Team & Company Context

🏢 Company Culture

Industry: E-commerce / Online Marketplace (specifically C2C). Mercari operates in a highly competitive global e-commerce landscape, with a strong focus on its Japanese marketplace. This context means the company is driven by user growth, transaction volume, and maintaining trust and safety within its platform.

Company Size: Mercari Group is a significant global tech company, with its employee count likely in the thousands, indicating a well-established structure with dedicated departments for various functions, including a growing design organization.

Founded: Mercari was founded in 2013. This relatively young age for a major tech company suggests a culture that is still evolving, likely retaining elements of a startup's agility and innovation while maturing into a large-scale operation.

Team Structure:

• Marketplace Design Team: This team is responsible for designing intuitive and trustworthy end-to-end experiences for users in Japan.

• Cross-functional Collaboration: The team closely partners with Product, Engineering, and Research departments to explore new problem spaces, define experience direction, and enhance craft, consistency, and innovation.

• Growing Organization: The design organization itself is expanding, indicating a phase of development and strategic growth, with opportunities to influence its structure and processes.

• Reporting: The Design Manager will likely report to a higher-level design leader (e.g., Head of Design, Director of Design) and will manage a team of designers.

Methodology:

• User-Centric Design: Emphasis on designing intuitive and trustworthy experiences, driven by user needs and research insights.

• Data-Driven Decisions: While not explicitly stated for design, the tech industry context implies a strong reliance on data to inform product and experience decisions.

• Iterative Development: The "Unique Challenges" section mentions balancing speed, experimentation, and innovation, suggesting an iterative approach to design and product development.

• Design Systems: A commitment to building and leveraging design systems for consistency and scalability across the marketplace.

• AI Integration: Proactive adoption and integration of AI tools into the design workflow.

Company Website: https://careers.mercari.com/en/

📝 Enhancement Note: Mercari's mission "Circulate all forms of value to unleash the potential in all people" is central to its culture. For a Design Manager, this means focusing on how design can empower users (both buyers and sellers) and contribute to the company's broader societal impact goals. The emphasis on "unique challenges" provides insight into the company's operational priorities and the types of problems designers will tackle.

📈 Career & Growth Analysis

Operations Career Level: This role is a mid-to-senior level management position within the design function. It requires not only strong individual design capabilities but also the ability to lead, mentor, and strategically shape a team and its output. The scope of responsibility extends to defining quality standards, influencing product roadmaps, and managing the growth of the design organization.

Reporting Structure: The Design Manager will report to a senior design leader (e.g., Director of Design, Head of Design) and will directly manage a team of designers. This structure allows for strategic direction from above and hands-on team leadership from the manager. Collaboration with Product Management, Engineering, and UX Research counterparts is crucial.

Operations Impact: The Design Manager's impact is significant, directly influencing the user experience of millions, which in turn affects buyer and seller engagement, trust, transaction volume, and ultimately, Mercari's marketplace success and revenue. By defining quality standards and driving innovation, they shape the perception and usability of the platform.

Growth Opportunities:

• Leadership Development: Advancement to senior management roles (e.g., Senior Design Manager, Director of Design) overseeing larger teams or broader product areas.

• Strategic Influence: Increased responsibility in shaping company-wide design strategy, organizational structure, and product vision.

• Specialization: Deepening expertise in specific areas like marketplace dynamics, international market design, or advanced AI integration in design.

• Cross-functional Leadership: Opportunities to lead cross-functional initiatives or even transition into related product leadership roles.

• Mentorship: Continued opportunities to mentor and develop designers, fostering their careers and contributing to the broader design community.

📝 Enhancement Note: The role offers a clear path for growth within design leadership, emphasizing both people management and strategic contribution. The "unique challenges" section suggests that the company values individuals who can thrive in ambiguity and build scalable systems, which are key indicators of growth potential.

🌐 Work Environment

Office Type: Hybrid. While remote work is possible, the role is based out of the Roppongi office, suggesting a collaborative environment where in-person interaction is valued for brainstorming, team building, and critical discussions.

Office Location(s): Roppongi, Minato City, Tokyo, Japan. This is a prime business district in Tokyo, offering excellent access to transportation, amenities, and a vibrant urban setting.

Workspace Context:

• Collaborative Hub: The Roppongi office likely serves as a central point for team gatherings, design critiques, and cross-functional meetings, fostering a sense of community and shared purpose.

• Modern Tech Environment: As a leading tech company, Mercari's office is expected to be equipped with modern tools and technologies to support design and development workflows.

• Global & Local Interaction: The workspace facilitates interaction with both local Japanese teams (Product, Engineering, Research) and potentially global stakeholders, requiring adaptability in communication styles.

• Focus on Craft & Innovation: The environment is geared towards encouraging high-quality design output, experimentation, and the adoption of new technologies like AI.

Work Schedule: Full flextime with no core hours offers maximum flexibility. This allows designers to structure their workdays around peak productivity times, personal commitments, and collaborative needs, while ensuring they meet project deadlines and team expectations.

📝 Enhancement Note: The hybrid model and full flextime indicate a modern, flexible work culture that balances individual autonomy with the need for collaborative synergy. The Roppongi office location suggests a dynamic and well-connected work environment.

📄 Application & Portfolio Review Process

Interview Process:

• Application Screening: Initial review of applications and resumes for alignment with required experience and skills.

• Skill Assessment: Potential for a design-focused assessment (e.g., case study, problem-solving exercise, or a

HackerRank/GitHub assessment for technical roles) to evaluate practical design capabilities and strategic thinking.

• Interviews: Multiple rounds of interviews, likely including:

  • Hiring Manager Interview: To assess overall fit, management style, and strategic approach.
  • Peer Interviews: With other Design Managers, Product Managers, or Engineering Leads to evaluate collaboration and technical understanding.
  • Senior Leadership Interview: To gauge strategic vision and alignment with company mission and values.
  • Portfolio Review Session: A dedicated session to present and discuss past work, focusing on impact, process, and leadership.

• Reference Check: Online references will be requested around the final interview stage.

• Offer: A final offer will be extended based on the comprehensive evaluation of interviews and reference checks.

Portfolio Review Tips:

• Curate Strategically: Select 3-4 of your strongest projects that best showcase your design management capabilities, end-to-end ownership, and impact. Prioritize projects that align with marketplace, e-commerce, or complex problem-solving scenarios.

• Structure for Impact: For each project, clearly define the problem, your role, the process you followed (emphasizing leadership and strategic decisions), the solutions you implemented, and the measurable results achieved. Use visuals effectively.

• Highlight Leadership: Explicitly detail your contributions to team growth, process improvements, mentorship, and how you influenced product strategy. Quantify team impact where possible.

• Prepare for Discussion: Be ready to deep-dive into your design decisions, trade-offs, and the rationale behind your strategic choices. Anticipate questions about how you handle ambiguity, manage conflict, and foster collaboration.

• Showcase AI Integration: If applicable, clearly articulate how you have leveraged AI tools in your design process and how you have guided teams in their adoption.

Challenge Preparation:

• Understand Mercari's Context: Research Mercari's mission, values, business model, and the Japanese market. Consider the unique challenges of a C2C marketplace.

• Design Strategy Scenario: Be prepared for hypothetical scenarios where you might need to define a product strategy, prioritize features, or address a specific user pain point for the Mercari marketplace.

• Process Improvement Exercise: Anticipate questions or exercises related to improving design team processes, implementing design systems, or enhancing cross-functional collaboration.

• Leadership & Mentorship Scenarios: Prepare to discuss how you would handle common team management situations, such as performance issues, team conflict, or supporting individual career growth.

📝 Enhancement Note: The interview process emphasizes practical skills, strategic thinking, and leadership potential. A strong portfolio that clearly demonstrates impact and management experience is critical. Understanding Mercari's specific context and challenges will be key to success.

🛠 Tools & Technology Stack

Primary Tools:

• Design & Prototyping: Figma (highly probable given industry standards), Sketch, Adobe Creative Suite.

• Design Systems: Experience with building, maintaining, or utilizing comprehensive design systems.

• Project Management: Jira, Asana, Trello, or similar tools for task tracking and workflow management.

• Collaboration: Slack, Microsoft Teams, or equivalent for real-time communication.

Analytics & Reporting:

• Product Analytics: Tools like Amplitude, Mixpanel, Google Analytics for tracking user behavior and feature adoption.

• Data Visualization: Tableau, Power BI, or similar for creating dashboards and reporting on key metrics.

• User Research Platforms: Tools for surveys, user interviews, and usability testing (e.g., UserTesting.com, SurveyMonkey).

CRM & Automation:

• CRM: While less direct for a Design Manager, understanding CRM principles (e.g., Salesforce) can be beneficial for context on user data and sales/marketing alignment.

• Automation: Familiarity with workflow automation concepts, particularly as they might apply to design processes or team operations.

📝 Enhancement Note: Proficiency in modern design tools like Figma is almost certainly a prerequisite. Experience with design systems is crucial given the emphasis on consistency and scalability. Familiarity with product analytics tools will enable the Design Manager to better understand user behavior and measure the impact of design decisions. The explicit mention of AI tools suggests their integration into the daily workflow.

👥 Team Culture & Values

Operations Values:

• Embody Mission & Values: A strong emphasis on aligning with Mercari Group's mission ("Circulate all forms of value to unleash the potential in all people") and company values. This implies a focus on user empowerment, fairness, and contributing positively to society.

• Inclusion & Diversity: A commitment to creating an inclusive environment where diverse backgrounds are valued and no one's potential is limited. This translates to fostering a welcoming team dynamic and equitable opportunities.

• Data-Driven & User-Centric: While design craft is paramount, decisions are expected to be informed by user research and data analysis to ensure relevance and impact.

• Efficiency & Innovation: A drive to optimize processes, leverage new technologies (like AI), and continuously innovate to improve the marketplace experience.

• Accountability & Ownership: Taking responsibility for the quality of one's work and the performance of the team, particularly in complex and ambiguous areas.

Collaboration Style:

• Cross-functional Partnership: Close collaboration with Product, Engineering, and Research teams is essential for defining product direction and ensuring holistic user experiences.

• Constructive Critique: A culture of open and honest feedback, particularly through design critique sessions, to elevate the quality of work and foster continuous improvement.

• Knowledge Sharing: Encouraging the sharing of insights, best practices, and learnings across the design team and with other departments.

• Experimentation & Learning: A willingness to experiment with new ideas and technologies, viewing both successes and failures as learning opportunities.

📝 Enhancement Note: The culture at Mercari appears to be a blend of purpose-driven mission alignment, a strong commitment to DEI, and a pragmatic approach to execution that values both collaboration and individual accountability. For a Design Manager, this means fostering a team that embodies these values in its daily work and interactions.

⚡ Challenges & Growth Opportunities

Challenges:

• Scaling Experience Quality: Maintaining and elevating user experience quality across a marketplace used by tens of millions, with potential global expansion, while dealing with diverse buyer and seller journeys.

• Navigating Ambiguity: Leading design efforts in unexplored product areas with few precedents, requiring strong strategic thinking and decision-making under uncertainty.

• Balancing Speed & Craft: Building systems and processes that enable the team to move quickly, experiment, and innovate while upholding a high standard for design craft, trust, and usability.

• Organizational Development: Simultaneously leading hands-on design work while shaping the growth, structure, hiring, and processes of a developing design organization.

• Cultural Nuance: Designing for the Japanese market with a deep understanding of cultural nuances, trust factors, and clarity requirements.

• AI Integration: Raising the team's proficiency and effective use of AI tools across diverse skill levels without compromising design quality.

Learning & Development Opportunities:

• Advanced Leadership Skills: Opportunities to hone people management, strategic planning, and organizational design skills within a large tech company.

• Product Strategy Influence: Deepen involvement in shaping product roadmaps and long-term strategic vision for the marketplace.

• Design System Evolution: Contribute to the strategic direction and evolution of Mercari's design system.

• AI in Design Specialization: Become a leader in leveraging AI tools and methodologies within the design process.

• Cross-functional Expertise: Gain deeper insights into product management, engineering, and user research disciplines through close collaboration.

• Industry Exposure: Potential for participation in industry conferences, workshops, or advanced training programs.

📝 Enhancement Note: The challenges are significant and reflect the dynamic nature of a rapidly growing tech company. Successfully navigating these challenges presents substantial opportunities for professional growth and skill development, particularly in leadership, strategic thinking, and emerging technology adoption.

💡 Interview Preparation

Strategy Questions:

• Vision & Strategy: "How would you define the experience direction for the Mercari marketplace over the next 1-2 years, considering our mission and unique challenges?" (Focus on articulating a strategic vision, prioritizing key areas, and outlining a phased approach.)

• Prioritization & Ambiguity: "Describe a time you had to prioritize competing business and user needs in an ambiguous situation. What was your process, and what was the outcome?" (Demonstrate structured decision-making, data utilization, and stakeholder alignment.)

• Team Building & Management: "How would you approach building and managing a high-performing design team at Mercari, focusing on mentorship, growth, and fostering a strong design culture?" (Discuss hiring strategies, performance management, feedback mechanisms, and team composition.)

Company & Culture Questions:

• Mission Alignment: "How does Mercari's mission resonate with your personal values and professional goals? How would you ensure your team embodies this mission?" (Connect your personal drivers to the company's purpose and illustrate how you'd instill this in your team.)

• Inclusion & Diversity: "What is your approach to fostering an inclusive and diverse design team? How do you ensure equitable opportunities and psychological safety?" (Share specific practices and a commitment to DEI principles.)

• AI Integration: "What are your thoughts on the role of AI in design today and in the future? How would you encourage your team to explore and integrate AI tools responsibly and effectively?" (Showcase forward-thinking perspectives and practical application ideas.)

Portfolio Presentation Strategy:

• Tell a Story: Structure your portfolio presentation around clear narratives for each project, emphasizing the problem, your strategic approach, your leadership role, and the tangible impact achieved.

• Quantify Impact: Use data and metrics (e.g., conversion lift, engagement increase, user satisfaction scores) to demonstrate the business value of your design contributions and team's work.

• Showcase Process, Not Just Pixels: Detail your design process, including research, ideation, prototyping, testing, and iteration. Highlight how you made decisions and navigated trade-offs.

• Focus on Leadership: For management roles, explicitly call out instances where you mentored designers, improved team processes, influenced product strategy, or contributed to organizational growth.

• Prepare for Q&A: Anticipate deep-dive questions about your decisions, challenges, and how you would apply your experience to Mercari's specific context.

📝 Enhancement Note: Interview preparation should focus on demonstrating not only design expertise but also strong leadership, strategic thinking, and an understanding of Mercari's unique context and values. The ability to articulate impact through data and stories will be crucial.

📌 Application Steps

To apply for this Design Manager position at Mercari:

• Submit your application through the provided application link on Workable.

• Tailor Your Resume & Cover Letter: Highlight your design management experience, leadership achievements, and specific skills relevant to marketplace design, AI integration, and cross-functional collaboration. Quantify your impact wherever possible.

• Curate Your Portfolio: Select your strongest end-to-end design projects that showcase your leadership, strategic thinking, and ability to drive measurable results. Ensure it clearly articulates your role, process, and impact.

• Prepare Your Presentation: Practice presenting your portfolio, focusing on storytelling, demonstrating your leadership, and articulating the impact of your work. Be ready to discuss your approach to team management and design strategy.

• Research Mercari: Thoroughly research Mercari's mission, values, products, and recent news. Understand the nuances of the Japanese e-commerce market and Mercari's unique position within it. Prepare thoughtful questions for the interviewers.

⚠️ Important Notice: This enhanced job description includes AI-generated insights and operations industry-standard assumptions. All details should be verified directly with the hiring organization before making application decisions.