応募資格

必須

6+ years of experience in product, UX, or interaction design with ownership of end-to-end experiences.
Strong craft skills across UX, interaction design, and visual design, with a sharp eye for detail and quality.
Proven ability to lead design for complex or ambiguous problem spaces.
Experience influencing product direction through design thinking, concepts, and storytelling.
Solid understanding of design systems, scalable patterns, and consistency at scale.
Strong collaboration and communication skills with cross-functional partners.
A portfolio demonstrating high-quality shipped work, problem-solving depth, and design leadership.
English: Proficient (CEFR – C1)
Japanese: Basic (CEFR – A2)

歓迎

Experience designing marketplace, e-commerce, or transaction-based products.
Experience acting as a lead designer across multiple teams or initiatives.
Familiarity with user research methods and applying insights to design decisions.
Experience working in or designing for the Japanese market.
Comfort experimenting, prototyping, and iterating quickly in uncertain environments.
Conversational Japanese proficiency

求める人物像

designers who care deeply about craft, can think beyond the immediate task, and want to shape the future of the buyer experience internationally.

募集要項最終確認 11/13

職種: UI/UXデザイナー
雇用形態: * Employment Status: Full-time
役職: Act as Lead Designer for assigned product areas
給与: 記載なし
勤務地: 記載なし
働き方: 記載なし
勤務時間: * Work Hours: Full Flextime (no core time)
経験年数: 6年以上
選考の流れ: * Application screening* Skill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.)* Interview: The number of interviews may vary depending on the position.* Reference check: We will ask for online references around the timing of the final interview.* Offer: Offers will be determined carefully in consideration of the final interview and the reference check.
掲載日: 2026/09/02 18:20（72日前）
最終確認: 2026/11/13 01:02（今日）

仕事内容

Organization/Team Mission

Mercari has been operating marketplaces localized in two countries, Japan and the United States, and the Crossborder team recently released a new global app , already in use in Hong-kong and Taiwan that we aim to deploy in over 100 countries. For requests from each region, it must be developed with a global perspective, including standardization and consolidation to avoid excessive localization.
The integration of Crossborder e-commerce and local business is heavily reliant on a robust logistics network and efficient operations. This necessitates working closely with numerous third-party vendors. Through this experience, you will acquire a wide range of business knowledge and apply it to engineering, collaborating closely with teams such as product and operations.
Trade-offs will have to be made to build a strong foundation while assuring a reasonable time to market. The team must balance short-term initiatives and the long term goal for the Global Product. Constructive discussions that transcend individual job roles, whether you are an engineer or a Business Developer, are essential for moving forward effectively.
The New Business Design Team leads end-to-end user experience design for emerging product initiatives at Mercari, shaping intuitive, trustworthy, and high-quality experiences for domestic and international users. We partner closely with Product, Engineering, Research, and Business Development to explore new problem spaces and raise the bar for craft, consistency, and innovation.

Why this role matters

This role plays a critical part in shaping how buyers experience Mercari at scale. As the marketplace evolves, we’re entering new problem spaces where clarity, trust, and experience quality matter more than ever. Senior Designers in this role don’t just execute solutions — they help define the problems worth solving and set the bar for what “good” looks like.
You’ll be trusted to operate with a high degree of ownership, leading end-to-end experiences in ambiguous areas while balancing user needs, business goals, and long-term product quality. Your work will directly influence how buyers discover value, make confident decisions, and build trust with the marketplace.
This role matters because strong design leadership here creates leverage: it unlocks better collaboration, sharper product thinking, and more durable experiences that scale beyond a single feature or release. We’re looking for designers who care deeply about craft, can think beyond the immediate task, and want to shape the future of the buyer experience internationally.

Work Responsibilities

Own the end-to-end design for buyer-facing experiences, from discovery and problem framing through execution and launch.
Act as Lead Designer for assigned product areas, setting experience direction and design quality standards.
Translate ambiguous business and user problems into clear experience strategies, flows, and high-quality UI.
Drive design decisions through strong craft, systems thinking, and user-centered rationale.
Collaborate deeply with PM, Eng, and UXR to shape product direction and influence roadmaps.
Identify gaps and opportunities beyond the immediate scope and proactively propose new ideas, concepts, or improvements.
Contribute to and evolve shared design systems, patterns, and best practices.
Provide thoughtful feedback and mentorship to other designers, raising the overall quality of work.

Unique Challenges

Designing for large-scale, real-world marketplace complexity with diverse buyer needs and behaviors.
Leading design in unexplored or undisclosed product areas with high ambiguity and few precedents.
Balancing speed, experimentation, and innovation with a high bar for craft, trust, and usability.
Navigating cross-team and cross-function alignment while maintaining clear experience ownership.
Designing for the Japanese market with strong attention to cultural nuance, trust, and clarity.

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Senior Product Designer - Crossborder

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募集要項最終確認 11/13

仕事内容

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Why this role matters

Work Responsibilities

Unique Challenges

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