DevOps
I have been working in DevOps and in various ways for years. It has become my primary focus more recently. I spend most of my days in one of the following:
AWS
Jenkins
Docker
Terraform
Kubernetes
Cloudflare
New Relic
Percona
PagerDuty
Software Engineer
Building web applications, REST APIs, websites, CMS(s), and iOS application using various tools from LAMP stack to xCode.
LAMP
DI
iOS
REST
CMS(s)
Unit Tests
Familiar Languages
Just a list of my most used or familiar programming languages
php
Swift
SwiftUI
Bash
Javascript
HTML
CSS
Other Things
More fun tools
XCode
Git
Test Flight
Laravel
CakePHP
Yii
Wordpress
Single Responsibility
Every class / module should have a "single" responsibility or problem that is solves.
Open / Closed Principle
You can extend existing functionality but leave the existing well tested code alone.
Liskov Substitution Principle
Basically, you should be able to interchange subclasses without needing to change anything. The super class will still function fine. Think Animal superclass. Maybe a "speak" function is not ideal because there are animals that can not speak. OR, if you were to implement speak, a handled error could be used.
Interface Segregation Principle
Create multiple, as many as needed, interfaces and have classes implement each one. Ties togehter withe the Single Responsibility idea.
Dependency Inversion
Depend on abstractions no concretions. This allows for a much more hot-swappable or modular application.