Web Development
Basic Front End
Back End
Dev Ops
Server Management (configuration management or CM)
Chef
Ansible
Front End Developer
Data
Relational: MySQL, PostgreSQL
Document: MongoDB, Couchbase, RethinkDB
Search Engine: ElasticSearch, Solr
Redis / sessions / caching
Caching
Apache (Server)
In-Memory
Things to Learn
Authorization/Authentication
JSON WebToken
Web Platforms
Amazon Web Services (AWS)
Heroku
Docker (containerized applications and databases)
Small Scale: Docker Swarm, Docker 1.12 swarm
Big Scale: Kubernetes, Mesos
CSS Tools
Precompilers: SASS / LESS / Stylus
Rackspace
Linux
MV* Javascript Frameworks
Responsive Design with CSS
Unit Testing
Task Runners
Dependency Management
Browserify
Mocha
Vue.js
Jasmine
Karma
API's / RESTful Services
Security
OAUTH2
Continuous Testing & Delpoyment
Gulp
Salt
Deploying your app (flightplan: nodejs, Fabric: python, Capistrano: ruby)
SOA (Service Oriented Architecture) / Microservices
websocket
UI-Driven: Rancher, Docker Cloud, Docker Datacenter/Universal Control Plane
Puppet
Clojurescript
Database (Redis)
CSS Frameworks: Bootstrap / Foundation
Text Editors
Sublime Text
Atom.io
Brackets.io
enzyme (testing react)
Elm
Mobx
Relay
ES6/ES2015 (Babel)
Functional Languages
Scripting Languages
Python (django, flask^)
Ruby(Ruby on Rails, Sinatra^)
PHP(Laravel, Symfony2, Lumen^)
Scala
Elixir
Clojure
Haskell
High-Performance/Compiled Languages
Go / GoLang
Rust
Java
C#
ORM/Data Structure
Azure
Jenkins (on your own hardware)
SemaphoreCI
CircleCI
Codeship
create-react-app
Unit/Functional Testing for Chosen Technology
GraphQL
Ember.js
No Matter Which Route You Take