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UX Researcher - Crossborder, Mercari

Salary not provided

English only
English: Fluent

Minimum year of experience: 2

Mercari

UX Researcher - Crossborder

  • Employment Status: Full-time
  • Work Hours: Full Flextime (no core time)
  • Office: Roppongi

About the Role

Join as a User Researcher on the Cross-border UX research team, supporting the global rollout of a marketplace app. This is a hands-on, tactical research opportunity, focused on generating continuous insights to improve the 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. You'll also support research operations and ensure actionable insights reach decision-makers quickly and effectively. The team values curiosity about cultural nuance, excitement about global research, and openness to using AI tools in research workflows.

Ideal for a practical, detail-oriented researcher who enjoys balancing structured UX testing, operational ownership, continuous learning, and strategic thinking.

Work Responsibilities

Tactical / Applied Research

  • Plan and execute ongoing usability tests, user interviews, concept evaluations, and design validation studies to inform product decisions.
  • Utilize research platforms (e.g., UserTesting, Maze) to run unmoderated studies at scale; efficiently collect and analyze feedback.
  • Design lightweight research frameworks for rapid testing in collaboration with designers, PMs, and engineers.
  • Synthesize findings into clear, actionable insights for product 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.
  • Contribute to the Voice of the Customer (VoC) program, including feedback reporting and visualizing insights.
  • Partner with cross-functional teams to streamline and scale research practices globally.
  • Explore and apply AI tools across the research workflow (e.g., planning, recruitment support, analysis, synthesis, repository management, insight communication).
  • Identify ways to incorporate AI into the product development and research cycle for faster, scalable decision-making.

Strategic Opportunities

  • Collaborate with senior researchers and design leads on larger strategic research initiatives.
  • Participate in developing research playbooks and frameworks for cross-border user studies.
  • Take part in 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…)

  • Curious and adaptable, thriving 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 experimenting with AI to improve and transform the UX research workflow.

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 in a research context.
  • 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 operations processes or Voice of the Customer (VoC) management.
  • Japanese, Mandarin, or Cantonese language skills are a plus.
  • Understanding of the ecommerce industry.
  • Understanding of the ACGE (anime, comics, games and entertainment) product space.

Language

  • English: C1 required
  • Japanese: Beneficial

See CEFR details.

Culture & Mission

  • Passion for the Product
  • Grow Together
  • Solve Through Mechanisms
  • Collaborate Openly

Read more about the Engineering Culture.

Learn More

Recruitment Process

  • Application screening
  • Skill assessment (depending on position)
  • Interview(s)
  • Reference check
  • Offer

More details about the process: Recruitment Process

Equal Opportunity Hiring

The company aims to eliminate discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares its mission and values can join, regardless of background. Learn more: Inclusion & Diversity Statement.

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