HTML5, CSS3, SASS & LESS- I consider proper naming and semantic HTML5 markup a craft, and take it seriously. I can write a whole component in HTML just by looking a psd, and later sculpt it with CSS.
SASS is such a powerful and an effective way to promote maintainable and reusable code. I have a go-to SASS library of mix-ins and variables that I have accumulated over the years that significantly reduce setup up. I have only used LESS as it relates to theming the Magento framework, i prefer SASS.
Backbone, Node, React & Redux - Typically I have used Backbone to help organize content specific javascript. Node as a service to interface with APIs and third party data structures. React as a Front End templating engine. And Redux to handle the dispatching of event based states.
ES6 Javascript & JQuery - Lately been trying to write as vanilla JS as possible, using ES6 syntax and transpiling using babel. Often times I will try to see how long I can go without including JQuery. I am quite versed in JQuery but recently it has become problematic within new frontend systems and as such I have tried to use it sparingly or not at all.
Python/Django - I have built and deployed several Python apps, leveraging the Wagtail CMS. And have worked with our team to create a foundational architectue which packages vetted components, that significatly reduces start up time.
Ruby on Rails - This is my strongest backend programming language. I have built robust Content Management Systems using polymorphic models, Google Maps API integration, custom social media scrapers/engines.
PHP & Wordpress - I have worked on building robust backends in Wordpress which allowed client service teams to effortlessly manage content for monthly newsletters.
Servers & Databases - I have worked with Linux servers running some combination of Apache or Puma. Typically working with staging and production environments, and deploying code updates through CircleCI. More recently I have been exploring out the box solutions with either Docker Containers, or Amazons Elastic Beanstalk. My database of choice is MYSQL.