* Design architectures, implement medium to large size features to build online learning management systems.
* Develop and maintain both RESTful APIs and GraphQL for web-based and mobile application with Ruby on Rails and PostgreSQL.
* Design multitenant architecture and SaaS-enable applications for enterprises data isolation.
* Host and develop admin panel from scratch based on SaaS architecture.
* Design and maintain tests for all web applications with RSpec. Maintain code coverage above 90%.