Software Development Engineer in Test (SDET) | Fast-Growing AI & FinTech Solutions Company

Requirements

• Professional experience in QA or software testing for web applications
  
• Experience in test planning, test design, and test execution
  
• Hands-on experience implementing automated E2E and/or API testing
  
• Ability to collaborate effectively with Software Engineers, Product Managers, and other stakeholders to improve product quality
  
• Business-level Japanese or above
  
• English communication skills sufficient to work with the development team
  

Preferred Qualifications

• Experience with E2E test automation using Playwright, Cypress, Selenium, or similar tools
  
• Experience integrating automated testing into CI/CD pipelines
  
• QA experience with B2B SaaS or enterprise software products
  
• Experience building or improving test environments and test data
  
• Experience testing products utilizing AI or Large Language Models (LLMs)
  

Why Join?

AI × FinTech Product

Work on an AI-powered SaaS product addressing complex challenges faced by major financial institutions and enterprise customers.

Test Automation & Quality Engineering

This is not simply a manual QA position. You will have the opportunity to implement E2E/API test automation and improve the company’s overall quality engineering processes.

Rapidly Growing Company

Join a fast-growing technology company with more than 300 employees that is currently preparing for its next stage of expansion and a future IPO.

Work Closely with the Product Team

Collaborate directly with Product Managers, Software Engineers, Designers, Customer Success, and other teams while having a direct impact on product quality.

Flexible Working Environment

The company offers a hybrid working environment and a full flextime system with no core hours.

Benefits

• Full-time permanent position.
  
• Hybrid work available.
  
• Full-flex working hours with no core time.
  
• Flexible working hours between 5:00 and 22:00.
  
• Professional discretionary labor system may apply depending on the position.
  
• Standard working time: 8 hours per day with a 1-hour break.
  
• Average overtime: approximately 20–30 hours per month.
  
• 123 annual holidays.
  
• Full two-day weekend system.
  
• Year-end/New Year, refresh, childcare, and special leave available.
  

• Social insurance.
  
• Defined contribution pension plan.
  
• Employee stock ownership program.
  
• Support for books and study sessions.
  
• Udemy learning support.
  
• Sports allowance.
  
• Health checkup and vaccination support.
  
• Transportation allowance.
  
• Babysitter support.
  
• Relocation support for eligible employees.