1. Web Applications and Services using HTML, CSS, JavaScript
2. Functional programming, particularly in Erlang, OTP, BEAM, Elixir
3. Object-Oriented Programming such as Ruby, Rails, Sinatra, Gems, RSpec, Cucumber
4. Cloud AWS RESTful web services solutions and HATEOAS
5. Experience with nginx, Redis, PostgreSQL, Elasticsearch, Linux (preferably Ubuntu)
6. Expert in Git, GitHub, and GitFlow