Jobs / Senior UX Designer
Jobs at Mercari

Senior UX Designer

Mercari Tokyo (Hybrid)
EN: business
JP: business
Employment Type
Full time

Job Description

In this position, you will have the opportunity to lead product design of Mercari, a marketplace app with 20 million monthly active users, and to design not only components on screens but also the entire user experience, making an impact on the business. Apart from that, this position will allow you to work on various kinds of design tasks for our product such as developing design systems from scratch, through which you can get experience that will be a valuable asset for you as a product designer.


Contributing to maximizing user experience/profit through designing UX and UI

  • Designing UI and UX for the Mercari marketplace app (designing listing and buying experiences, etc.)

  • Designing UI and UX for new services

  • Improving UX/UI for the existing product, working on growth hacking, and designing marketing promotions

  • Communicating with product managers/engineers and getting involved in decision making

  • Driving projects forward (managing progress/resources and adjusting scope of work)

  • Conducting job interviews with designers

Example Projects

  • Improving UX and UI of components that Mercari and Merpay share

  • Establishing communication policies with users such as notifications and promotions

  • Planning and developing strategic initiatives for the entire company

  • Revamping listing and buying experiences for each category

  • Acting as a creative director for large-scale promotions

Development Tools/Environment

  • Figma, Sketch, Adobe Creative Cloud, InVision, GitHub, Slack, etc. / Mac


Required Experience

  • Shared understanding and belief in our company’s mission and values

  • 7+ years experience designing UI/UX for apps or web

  • Ability to demonstrate leadership skills and lead projects in collaboration with team members

  • Experience using development tools such as Figma and InVision

  • Shared interest in Mercari’s mission and values

  • Experience using the Mercari app to buy and sell items

*Please attach a portfolio that shows the track record of projects that you have been involved in, including overall process, roles & responsibilities, and output.

Preferred Experience

  • Experience in people management or enthusiasm for creating a design organization

  • Experience in managing projects

  • Experience designing B2C services with a large user base

Screening Criteria

  • Ability to demonstrate leadership skills and lead projects in collaboration with team members

  • Constantly seeks ways to improve their skills and learn new things

  • Works on things in a timely manner and in close collaboration with those around them

  • Takes ownership over their tasks, and proactively moves projects forward

  • Has the ability to adapt to a changing environment

  • Can talk on equal footing with the business side and the engineering side

Technical Assessment Criteria

  • Understanding of Mercari and Merpay’s services

  • Problem-solving skills

  • Basic skills for designing UI/UX

Language Requirements

Either of the following is required

  • a. English: Independent Independent (CEFR – B2) / Japanese: Proficient (CEFR – C1)

  • b. English: Proficient (CEFR – C1) / Japanese: Independent (CEFR – B2)

About the Company

Our Mission

Mercari is a Japan-based company with the mission of “creating value in a global marketplace where anyone can buy & sell.” Having continuously worked toward this goal since our founding in 2013, we are now transforming from a startup into a global player. While this transformation brings its own specific set of challenges, we believe that solving them one after another will allow us to fully achieve our mission. Are you interested in working together to take on these exciting challenges?

Our Culture

Mercari’s culture has been central to the company since our founding, with the three core values of Go Bold, All for One, and Be a Pro. In addition, the “Trust & Openness” value was introduced to embody our culture of mutual trust, where information remains transparent and rules are kept to a minimum. Regardless of how big Mercari gets, our culture is essential to achieving our mission and will be promoted throughout our organization.


Location: Roppongi

  • Smoking is prohibited within our offices

  • Mercari has introduced a work style policy called “Your Choice.” Each member is free to choose whether they want to work in the office or work fully remote.

*Exceptions made for certain kinds of work.

Work Hours

  • Full flextime (no “core time” or “flex time”)
    *Does not apply to all positions


  • Two days off per week (as well as national holidays, New Year's break, etc.)

  • Paid leave, congratulatory and bereavement leave, relax days, sick leave


  • Annual salary paid in 12 monthly installments (including fixed overtime allowance)

  • Based on skills, experience, and abilities

  • Reviewed twice a year


  • Complete health and social insurance

  • Incentive program

  • Support systems, including those that benefit the employee’s family members


  • Relocation support

  • Language learning support

  • Translation/interpretation support