Ruby on Rails Engineer

■ The Opportunity
As our business continues to grow, we are looking for a Ruby on Rails engineer who can join our team and develop the application in cooperation with the product manager. Working in the form of Squad, a small team can quickly and consistently engage in everything from design to development, testing and operation.
Also, there are a lot of opportunities to work with new languages and FWs other than the main language in an international environment.
■ Job Scope

• Design and implementation function of the product in charge using Ruby on Rails.
• Refactoring existing products for microservices.
• Requirements definition and specification formulation in collaboration with product managers and designers
• Architecture design based on requirements, middleware selection
• Measurement of effects for quality improvement and implementation of service improvement measures

■ Development environment

• Infrastructure: AWS, GCP
• CI/CD：Circle CI / Codebuild
• DB: Amazon Aurora (MySQL compatible edition), Elasticsearch, DynamoDB Configuration management: Ansible
• Deploy / Build: CodePipeline, CodeBuild, CircleCI, GitHub Actions
• IaC: Packer, Terraform
• Monitoring: Datadog, bugsnag
• Others: swagger, Docker, ZenHub, Figma, Slack / Jira

■ Requirements
Must-haves:

• 10+ years of experience in developing and operating Web services using Ruby on Rails
• Experience in developing and operating Web applications using frameworks
• Experience in schema design such as RDBMS and KVS and design of optimal query
• Have knowledge of Web application security
• Experience Test code implementation (Unit Test )
• Good at English communication

Nice to haves:

• 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.)