🐧
Operating systems
Linux Foundation
HQ: United States Serverless Framework, Node.js, Golang... Angular, TypeScript, JavaScript... MariaDB️ AWS
RedHat
HQ: United States Java, Spring Framework React, JavaScript Linux, Red Hat Enterprise Linux, Kubernetes... PostgreSQL, MariaDB, Oracle...️ OpenShift
SUSE
HQ: Germany Python, Django, C... JavaScript, jQuery, ... Kubernetes PostgreSQL️ AWS, Azure, GCP...
Python 
Front-end 📊 Product/Management
JVM ☁️ DevOps
JavaScript BE 
Golang 🎨 UI/UX Design
📱 Mobile
PHP 
C#/.NET 
Ruby/RoR 🔨 Testing/QA