Design, development and maintenance of the API in Ruby on Rails. Infrastructure monitoring in AWS. Development team leadership. Mobile android development in java/kotlin. Main technologies: Ruby on Rails, MySQL, Firebase (Realtime DB, Remote Config, Cloud Messaging), Paperclip, Docker, Docker-Compose, SQS and Shoryuken, Puma, CloudWatch, EC2, Elastic Beanstalk, ElasticSearch, VCR, NewRelic, CircleCI, Stripe.