• Full-time

Publication date: 2026.04.30

[No Japanese Required] QA Engineer – Energy Management System

  • System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
  • Tokyo
  • Salary ¥ 4M-10M
系統蓄電池EMS QAエンジニア(電力インフラ × リアルタイム制御) (13762)
職種Position System Engineers / Infrastructure Engineers / Web Engineers / Game Developers
会社概要Company profile The company is an energy-tech startup originating from research at the University of Tokyo, developing and providing an Energy Management System (EMS) platform that integrates and controls solar power generation, grid-scale battery storage, and electricity market operations.

As renewable energy adoption continues to expand, software technologies that enable stable power supply and efficient energy operation are becoming increasingly important. The company contributes to the advancement of Japan’s power infrastructure through the development of an integrated platform connecting generation facilities, battery storage systems, electricity markets (such as JEPX and balancing markets), and operational systems.

In recent years, the company has been focusing on next-generation energy management solutions that combine real-time control, market integration, and data analytics, particularly in response to the rapid growth of grid-scale battery storage business.

Through the development of mission-critical systems that support national energy infrastructure, the company aims to contribute to both the realization of a decarbonized society and the stable supply of electricity.
仕事内容Job description [Quality Assurance and Testing]
• Develop and execute testing strategies for grid-scale battery storage systems
• Design and implement API testing for market integration systems (JEPX, EPRX, OCCTO)
• Perform integration testing between EMS and battery systems
• Design tests for real-time control systems (response validation in seconds-to-minutes ranges)
• Validate batch processing and data flows
• Design and automate regression testing
• Analyze root causes of system failures and implement preventive measures

[Test Automation and Process Improvement]
• Integrate automated testing into CI/CD pipelines
• Explore and implement AI-assisted testing optimization
• Improve test coverage and visualize quality metrics
• Propose improvements across the entire development lifecycle

[Collaboration]
• Work closely with development teams (backend, edge systems, infrastructure)
• Participate in specification reviews and provide feedback
• Monitor production environment quality in collaboration with operations teams
• Coordinate quality standards with external vendors
応募資格Requirement Must Have
• 3+ years of experience as a Software QA Engineer
• Experience designing and executing tests for web applications or backend systems
• Experience testing API-integrated systems
• Experience creating and managing test plans
• Experience working with development teams in Agile environments
*Japanese skills not required

Nice to Have
• QA experience involving edge devices
• Experience testing real-time systems or streaming data processing
• Experience implementing test automation frameworks (Playwright, Selenium, etc.)
• Experience operating automated tests within CI/CD pipelines
• Experience or strong interest in AI-assisted testing optimization
• QA experience in high-reliability industries such as energy or finance
• Experience designing and executing performance and load testing
• JSTQB certification

Ideal Candidate Profile
• Able to design test strategies with an understanding of business operations and system usage
• Believes quality should be built throughout the entire development lifecycle
• Able to clearly explain technical challenges to non-engineers
• Comfortable working in a fast-paced startup environment
• Motivated to contribute to mission-critical social infrastructure systems
日本語力Japanese level None
雇用形態Employment type Full-time
勤務エリアLocation Tokyo
勤務時間Working hours Flexible working hours(Core hours: 10AM-3PM)
想定年収Salary ¥ 4M-10M
条件・待遇Condition Employment Type
• Full-time employee

Remote Work
• Remote work available (approximately once per week on-site required)

Benefits
• Commuting allowance (within non-taxable limits)
• Health insurance
• Employees’ pension insurance
• Employment insurance
• Workers’ compensation insurance

Retirement Age
65 years old

Training & Support Programs
• Certification support program
• Training support program

Holidays
• Full two-day weekend (Saturday and Sunday)
• National holidays
• Annual paid leave: 10 days or more (granted after 6 months of employment)
• 125 annual holidays
• Year-end/New Year holidays (Dec 29 – Jan 3)

Additional Benefits
• Remote work support
• Reduced working-hour system available
• Casual dress code
• Childcare and family support programs
• Relocation support
• Stock option program
• Continued employment system (extension / re-employment)
• Free office water server
選考についてProcess Number of interviews: 2–3 rounds

Initial interviews may be conducted online
At least one in-person interview is required
The number of interviews and process may change depending on the candidate and position at the company’s discretion
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