I've seen some things.

I'm a Senior Full Stack Developer who has worked on over 100 sites in the past 17 years.
I work on Open Source projects in my spare time.
I've been working remotely (mostly or all of the time) for the past 10 years.

Experience

PHP application architecture and implementation for marketing and sales channels of Windows desktop applications.
Laravel and no-framwork codebases across 8 interconnected properties.
Multiple payment processor backends. Multiple languages.
Perpetual code review.

Front-end, back-end, database...whatever needs to be done.
Short-term projects (~ 3 months) involving the creation of new sites, many based around custom WordPress themes.
Long-term projects (> 1 year) to add features to existing applications and handle maintenance.
Collaboration with UX, design, and other stakeholders to define scope and add technical perspective.

Maintained a publishing company's custom in-house CMS and XML API.
Introduced message queues via Beanstalk for publishing assets to Facebook and other social media APIs.
Built a search system using Sphinx to do faceted search efficiently.

I've had senior developer roles at Huge, MCD, Digital Pulp, and other NY agencies.
In the very beginning I wrote DHTML for Netscape 4 and IE 5. HTML, JavaScript, and CSS have been mainstays since day one.

Database: I work most frequently with the LAMP stack, so MySQL is my go-to. I have highest regard for SQLite, and have also used Redis as a primary datastore. It was cool.
Front-end: I've built projects with Backbone and Angular 1, but have moved on to Vue.js. jQuery is still a de facto choice.
Back-end: Outside of PHP I have projects in Python 2 and 3, and others in Node JS using Express and Restify. I've worked on Django and Rails projects in the past. Within PHP I've used Cake, CodeIgniter, and Symfony.
Web servers: Nginx or Apache.
Scripting: Bash can do anything if you believe, and I do.
Version control: I started out with CVS, moved to Subversion, tried out Mercurial briefly but now use Git like everyone else.
As well as: Composer, PHPUnit, Mocha/Karma Ansible, Vagrant, the Atlassian suite, Photoshop/Illustrator/InDesign. Let's be honest, at this point I'm just stuffing the page with keywords.