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UX Researcher - Crossborder, Mercari
- Employment Status: Full-time
- Work Hours:Full Flextime (no core time)
- Office: Roppongi
For more details, see the Overview of Our Positions section on our Careers site.
About Mercari
Circulate all forms of value to unleash the potential in all people
"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential. For more information about Mercari Group’s mission, see Mercari’s Culture Doc
Organization/Team Mission
Mercari Engineering Principles
Mercari Engineering Principles are a shared understanding that serves as the foundation of engineering beliefs and behavior at Mercari. The Engineering Principles are designed to complement the organizational identity (Mercari’s mission, values, and culture) from an engineering viewpoint.
These principles ultimately help us achieve Mercari’s mission by defining the ideal state we seek to realize in the long term.
- Passion For The Product
- Grow Together
- Solve Through Mechanisms
- Collaborate Openly
For more details, please see the following link:
- Engineering Culture
See here for more information about our mission and values.
About the Role
We are seeking a User Researcher to join the Cross-border UX research team supporting the Mercari Global Product rollout.
This is a hands-on, tactical research role focused on generating continuous insights to improve our global marketplace experience across multiple countries and user contexts. You’ll play a key role in planning and executing usability testing, concept evaluations, and customer feedback analysis, while also supporting research operations and helping ensure that user insights reach decision-makers quickly and effectively.
As Mercari scales globally, we are looking for someone with a strong international mindset — curious about cultural nuance, local market differences, and how user needs shift across regions. We are also looking for someone excited to work in an increasingly AI-native research environment, using AI tools thoughtfully to improve research speed, quality, synthesis, and communication.
This position is ideal for a practical, detail-oriented researcher who enjoys balancing structured UX testing with operational ownership, continuous learning, and opportunities for strategic thinking and fieldwork.
Work Responsibilities
Tactical / Applied Research
- Plan and execute ongoing usability tests, user interviews concept evaluations, and design validation studies to inform product decisions for Mercari’s Global App.
- Leverage research tools/platforms (such as UserTesting, Maze, or similar tools) to run un-moderated studies at scale, efficiently collect and analyze feedback.
- Design lightweight research frameworks for rapid testing cycles in collaboration with designers, PMs, and engineers.
- Synthesize findings into clear, actionable insights that directly inform design and feature iteration.
Research Operations
- Support participant recruitment and logistics for qualitative and quantitative studies across multiple markets.
- Maintain and improve research repositories, user databases, feedback trackers, and documentation for recurring studies.
- Contribute to the Voice of the Customer (VoC) program, managing feedback reporting and helping visualize insights for product teams.
- Partner with cross-functional teams to streamline and scale global research practices, ensuring insights are easy to access, compare, and act on across markets.
- Explore and apply AI tools across the research workflow, including planning, recruitment support, analysis, synthesis, repository management, insight communication, and reporting.
- Help identify practical ways to incorporate AI into Mercari’s product development and research cycle, enabling faster learning loops and more scalable decision-making.
Strategic Opportunities
- Collaborate with senior researchers and design leads on larger strategic research initiatives.
- Participate in the development of research playbooks and frameworks for cross-border user studies.
- Contribute to in-person international research (e.g., fieldwork in Hong Kong, Taiwan, or the U.S.) as opportunities arise.
Unique Challenges (Looking for someone who is…)
- A curious, adaptable researcher who thrives in fast-paced environments.
- Comfortable switching between hands-on tactical work and broader research planning.
- Excited to collaborate across cultures, languages, and time zones.
- Proactive and detail-oriented, with strong communication and documentation habits.
- Comfortable with AI tools and experimenting with AI to ‘redesign the UXR playbook’ with this powerful new technology
Qualifications
- Required Experience/Skills
- 2+ years of UX research experience (in-house, agency, or freelance).
- Experience planning and conducting usability tests, user interviews and concept evaluations.
- Familiarity with remote testing tools such as UserTesting, Maze, UserZoom, or similar.
- Experience with participant recruitment and coordination.
- Strong communication skills in English (verbal and written).
- Experience with AI tools and applying them in a research workstream
- Comfortable with basic survey tools (e.g., Google Forms, Qualtrics, Typeform).
- Preferred Experience/Skills
- Experience working on global or cross-cultural products.
- Familiarity with research ops processes or VoC management.
- Japanese, Mandarin, or Cantonese language skills are a plus but not required.
- Understanding of the ecommerce industry
- understanding of the ACGE (anime, comics, games and entertainment) product space
- Language
- Japanese: Beneficial
- English: Required - C1
For details about CEFR, see here.
Learn More About Mercari Group
- Careers site: https://careers.mercari.com/en/
- Mercan: https://mercan.mercari.com/en/
- Social media: X / Linkedin
Recruiting at Mercari
At Mercari Group, we value empathizing with and embodying the mission and values of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible.
Recruiting cycle at Mercari Group
- 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.
Learn more about our recruiting process here.
Equal Opportunity Hiring
Here at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Inclusion & Diversity is essential for us to achieve our mission.
This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our I&D statement.
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