Server side programming: Ruby/Rails, Node, Java/Scala
Browser: JS with React, Angular, Flux/Redux, GraphQL; rare langs: Elm, Clojurescript
Server side administration: AWS (EC2, S3, Beanstalk), Heroku, Linux, Ansible deployment, Nginx, load balancing
Project health/management: Git flow, Jira/Pivotal, Slack. DB: Postgres/Mysql, Mongo; Redis, Elasticsearch
Special: bot development (Telegram, Slack, anything else)
In 8 intensive years of software development, I have become experienced in a number of critical technologies, including Ruby/RoR stack, Python stack, Javascript frontend/Backend stack, and Java/Scala Web stack.
In JS stack, my experience is mostly with React for frontend and Express/HAPI/MeteorJS for a backend. I worked a lot with both. Currently, I prefer to write frontend 'right way' with React (with flux and reflux and redux data flow architectures); I also have solid Meteor-specific knowledge.
My experiences and skills developed have been especially strong in tasks involving Ruby/RoR. I have found Rails among the best tools available in web development so far, so I am especially enthusiastic about RoR projects. I can also provide expertise in Scala, a great language that I admire, and somewhat in Java, which I have worked with before (I used to write Jira plugins for my company at office job).
In Scala stack, I have worked with Play2 and Slick and have used Guice.
Thanks