This position is closed and is no longer accepting applications.

Senior QA Engineer

KOMOJU Musashino-Shi, Tokyo March 25 2025
  • 💴 ¥8M ~ ¥12M annually
  • 🏡
    Fully remote
    From Japan
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Senior level
    Unspecified years of experience

About KOMOJU

KOMOJU Musashino-Shi, Tokyo

The leading cross-border payment gateway for Japan. We power payments for companies like video game distribution platform Steam and the popular mobile app TikTok.

Key benefits

  • Developer-centric, inclusive culture
  • International at our core
  • Generous holiday policy

About the position

We are looking for our first QA engineer who are comfortable developing, implementing testing processes and methodologies and tools to identify and address any issues or defects in the features and products we want to release. They are responsible for coordinating and conducting tests to ensure the software runs smoothly and meets client needs. This involves reviewing system specifications, executing test scripts, reporting/documenting technical issues, and collaborating with the development, product managers and stakeholders. The ideal candidate will have proven experience as a QA tester or similar role, an understanding of project management and QA methodology, and excellent communication skills.

We primarily write in Ruby and deploy to AWS, so understanding how to conduct testing and QA in these environments will be vital. Familiarity with Ruby is not a requirement for this role, as the company is happy to invest time and resources for you to learn.

Responsibilities

  • Assist in establishing a scalable QA process and methodology that integrates seamlessly with the development process and aims to minimize the occurrence of issues, bugs, or usability problems that could adversely affect our users
  • Work closely with development teams, product managers and other stakeholders to understand technical requirements and provide input on design considerations
  • Work with teams to develop a test plan appropriate for the scope and scale of the project.
  • Test case design and execution
  • Identify, document and prioritize defects and issues
  • Collaborate with the development team providing detail information on the circumstances of the defect and potential solutions

Requirements

  • Proven experience as a QA tester or similar role
  • Experience in project management and QA methodology
  • Ability to document and troubleshoot errors
  • Hands on experience with automated testing tools like Selenium or Cypress and RSpec
  • Experience working in agile/scrum development process
  • Strong attention to detail
  • Excellent communication skills

Compensation

¥8,000,000 ~ ¥12,000,000 annually.

Hiring Process

  1. 1

    Initial screening call with HR

    To understand candidates’ overall professional background, career aspirations, and to evaluate the fit for the role/ culture.

  2. 2

    Take-home exercise

    It’s opportunity to evaluate candidates’ practical experience and observe that they follow best practices.This includes, but is not limited to, their coding skills, problem-solving abilities, system design capabilities and ability to optimize and maintain code. We normally give the applicant one week to complete it, but we don’t expect it to take more than 2 hours.

  3. 3

    Technical team interview

    This interview serves two purposes: it’s a chance to review the take-home exercise and assess the candidate’s technical abilities, and it also helps evaluate their soft skills, how well they collaborate with stakeholders and team members, manage their work (time management, prioritization, adaptability), and demonstrate a commitment to continuous learning.

  4. 4

    Final interview with leadership

    We’re looking here to assess culture add. We’re not looking for people that just fit the status quo (culture fit), we want candidates who can bring something new and valuable to our culture. While ensuring that they still align with our core values, we want to assess their ability to adapt to recent changes within the organization and to help guide the organization through its next stage of development.

Meet KOMOJU's Developers

Kazunori initially joined KOMOJU as a web application engineer, but by identifying problems he wanted to fix, his role shifted first to VP of Infrastructure, and then VP of Payment Products.

Read their story...

Nicole joined KOMOJU in 2020, and worked her way up to be technical lead of the merchant management team. She shares her journey, how KOMOJU supported her career growth and how the company is adapting to its growing needs.

Read their story...
Photo of Richard Ramsden

Becoming CTO of KOMOJU

with Richard Ramsden

After graduating from university, Richard came to Japan and found a job as a software developer. Eventually he joined KOMOJU, where he rose to the role of CTO.

Read their story...

Nigel was fresh out of college when he joined KOMOJU as a developer. He's now risen to tech lead, where he's helped build out their payment platform while maintaining a healthy work-life balance.

Read their story...

Muhammad Denaw, Senior Site Reliability Engineer at Komoju, talks about his work and shares how Komoju's trust and support propelled him to a promotion.

Read their story...

Head of Customer Engineering Makoto Mizukami describes the unconventional candidates his unique team is looking for.

Read their story...

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