必須：

• At least 3 years of experience in Ruby on Rails development or in a similar position.

• Excellent knowledge of back-end web development, especially in the Ruby on Rails framework.

• RESTful API開発に関する優れた知識

• Good knowledge of Design patterns

• Experience in SQL/NoSQL databases and their declarative query languages

• Experience working with testing libraries like Rspec.

• Familiarity with front-end technologies such as Webpack/Webpacker, JavaScript, HTML5, and CSS3. Having experience with ReactJS/ VueJS/ AngularJS is a plus.

あれば尚可：

• Good understanding of Microservices architecture.

• Hands-on experience with system operations or CI/CD tools such as Jenkins and Docker.

• Experience integrating with common third-party APIs (e.g., LINE, Stripe, etc.) is a plus.

• Familiarity with cloud services such as AWS, GCP, or Azure.

• Experience working with multiple database types such as Redis, MongoDB, and Elasticsearch.