Backend
Experienced with Ruby (and Ruby on Rails) since 2015.
Asynchronous Job: Sidekiq/Backburner with redis/beanstalkd/SQS
Testing Tool: Rspec
Database: PostgreSQL, MongoDB, DynamoDB, Redis, Memcached and Elasticsearch
Container: Docker, Elastic Beanstalkā, AWS ECS
Frontend
Vanilla Javascript, jQuery, bootstrap, SCSS.
Famework: AngularJS
Operation
Exprienced 2+ years with Amazon Web Service.
Log Monitoring with EFK + New Relic
Alarm System: Sentry, New relic and CloudWatch + SNS + Lambda + Slack