Jobs / Senior QA Engineer
Jobs at Mercari

Senior QA Engineer

Mercari Tokyo | Remote

Listing expired

Sorry, this job listing is no longer available!
Browse our new job listings here
EN: business
JP: basic
Employment Type
Full time

Job Description

Team’s Mission / Work Responsibilities

Within QA, our mission is to ensure the best quality software is shipped to our users and to provide world-class user experience when buying or selling on Mercari. Quality is at the heart of everything we do and we want you to come on this journey with us in building the best C2C marketplace possible.

(Learn more about Mercari's mission and values here.)


  • Serve as a subject matter expert, deeply understanding one or more specific areas such as Search, Payments, Shipping, or Operational tools, and mentor others in QA best practices.
  • Take a leadership role in the feature definition by ensuring JIRA stories are comprehensive, with clear acceptance criteria and accurate estimates, in collaboration with the Product and Engineering teams.
  • Engage in all SDLC phases, from requirements definition to maintenance, while identifying specification gaps and working within a cross-geo team.
  • Develop and execute detailed test plans and cases from user stories and technical documents, manage automation tests, and perform various manual tests, including exploratory, functional, integration, acceptance, and regression testing.
  • Efficiently report issues with clear reproducibility and escalate urgent concerns, alongside analyzing and reporting on quality metrics to maintain project standards.
  • Advocate for and apply software engineering best practices to foster development process improvements, prioritizing critical and backlog issues to mitigate technical debt and boost UX.

Unique and Bold Challenges

  • Collaborate with a dynamic Tokyo-based team and engage with colleagues across the US to drive Mercari’s mission of facilitating buying and selling, preparing for future challenges in a global context.
  • Actively contribute innovative ideas to enhance our engineering community.
  • Develop a comprehensive knowledge of the US market to secure Mercari’s growth and relevance.
  • Acquire new domain expertise, skills, and technologies that are valuable and applicable to our evolving needs.


Required Qualifications

  • 7+ years experience QA methodologies and software testing techniques and tools with extensive manual testing experience and Android or iOS and familiarity with respective platform UI standards.
  • Demonstrated experience with any object-oriented programming languages (Java, Python, Objective C, etc…), or automation frameworks like Cypress/Detox and experience with testing and using REST APIs.
  • Experience with Git or other source control tools and tooling such as JIRA, TestRail, and Slack.
  • Demonstrated experience in leading QA efforts on large-scale software projects or deliverables
  • Ability to document and troubleshoot issues and a passion for improving user experience.

Preferred Qualifications

  • Experience working in remotely distributed teams in different timezones
  • Experience working in a customer-facing app or e-commerce business with a large-scale user base

About the Company

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.

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.

Screening Criteria

  • Depth of experience in QA
  • QA technical prowess
  • Leadership and Soft skills

(See this page for details.)

Language Requirements

  • English: Proficient (CEFR - C1) 
  • Japanese: Basic (CEFR - A2) optional

Click here for more information about CEFR.