I am a "Full Stack" engineer with 2 years of experience working for a small company. Worked in everything of that except Ruby include ios(swift,Objective C),android,Java,Scala,MySql,DynamoDb,MongoDb. It was frustrating at the start and then it became a joy.But then not sure if I am good at any of those. The same day I would be fixing a Jenkins build, write some Node and fix bugs in the ios code base, completely normal. I am not ashamed to show off.