Senior Software Engineer – QA Platform Development

Cybozu Chuo-ku, Tokyo April 5 2026
  • 💴 ¥8M ~ ¥12M annually
  • 🏡
    Partially remote
  • 🌏
    Apply from abroad
    Relocate to Japan
  • 💬
    No Japanese required
    Business English
  • 🧪
    Senior level
    5+ years experience required
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About Cybozu

Cybozu Chuo-ku, Tokyo

Our four key products are used daily by over 175,000 companies and non-profits worldwide. As we continue to expand our business globally, we’re looking for individuals from all walks of life, with unique and diverse life stories and lived experiences.

Key benefits

  • Successful in Japan, growing globally
  • Open and flexible work environment
  • One of Japan’s top 3 best workplaces

About the position

We are looking for talented software engineers to join us for developing a platform for quality assurance and test automation. The ideal candidate has a strong background in software development, excellent coding skills, and a keen interest in software quality and test automation. While prior experience in test automation is preferred, we also welcome experienced developers eager to grow their expertise in testing.This is a developer-heavy role with a testing focus — strong coding ability is an absolute requirement. You will design and build test tools, frameworks, and infrastructure to enable continuous testing at scale, collaborating closely with engineering teams to ensure high product quality through robust automation and well-architected test systems.

Responsibilities

  • Build and maintain robust testing platforms and automation frameworks for web and mobile applications (Android & iOS).
  • Automate end-to-end test scenarios for critical user flows and system validation.
  • Ensure scalability and reliability through load, performance, and cross-platform testing.
  • Perform manual testing for complex scenarios where automation is not feasible.
  • Maintain clear and comprehensive test documentation.
  • Integrate automated tests into CI/CD pipelines and collaborate with the team.

Requirements

  • Minimum 5 years of professional experience in B2B software development.
  • Strong coding skills in TypeScript and Python.
  • Strong debugging, analytical, and problem-solving skills.
  • Passionate about test automation with a strong ability to apply creative thinking to solve testing challenges.
  • Professional English communication skills.

Nice to haves

While not specifically required, tell us if you have any of the following.

  • Experience with automation tools (e.g., Selenium, Appium, Playwright, and Espresso).
  • Experience in the implementation of automated end-to-end (E2E) test frameworks.
  • Knowledge of API testing (Postman, RestAssured, gRPC).
  • Experience with performance/load testing (e.g., JMeter, Locust, LoadRunner).
  • Exposure to modern frontend stacks such as React.
  • Experience in applying AI/ML techniques in testing.
  • Familiarity with web communication protocols (gRPC, OAuth2/OIDC).
  • Infrastructure experience with Kubernetes, Docker, CI/CD, and cloud platforms.

Compensation

¥8,000,000 ~ ¥12,000,000 annually.

DO YOU NEED MORE INFO?
ASK A QUESTION

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