● Design, develop, test, operate, and refactor products using Ruby on Rails.
● Propose and implement new features and improvement ideas.
● Collaborate with product managers and designers to define requirements and specifications.
● Architecture design based on requirements, middleware selection
● Continuously learn about technical trends and industry best practices and apply them to the product.
● Measurement of effects for quality improvement and implementation of service improvement measures

Must-have:
● 5+ years of experience in developing and operating Web services using Ruby on Rails
● Experience as a technical lead throughout the full project development lifecycle
● Knowledge and development experience with database systems
● Experience using cloud platforms (AWS, GCP, Azure, etc.)
● Experience in API design, development, and documentation
● Understanding of the software development lifecycle
● Programming, debugging, and testing skills
● Good at English communication

Nice to have:
● Experience of discovering problems from logs and solving problems
● Experience in developing systems using container technologies such as Docker and Kubernetes
● Experience in designing architecture based on application requirements and selecting middleware
● Experience of publishing and contributing OSS
● External technical output experience (writing, technical blog, stage, etc.)

• Competitive salary package, including full insurance coverage. 
• Annual performance review: twice/ year.
• 13th-month salary Bonus.
• 18 days of leave: 12 days of annual leave, 6 days of New Year Leave.
• Premium Healthcare Insurance Package starting from day one.
• Annual Health Check-up.
• Excellent career development opportunities, with exposure to and experience in the latest technologies.
• Patents and Inventions bonus.
• Company trip, Year-End Party, Gifts for Tet/ Holidays.
• MacBook Pro/laptop is provided.

• No.1 Construction Tech company in Japan
• Hybrid working environment
• Attractive salary and Macbook Pro