iOS development
Objective-C is a programming language that is used in the OS X and iOS operating systems and their application programming interfaces (APIs).
Swift is a powerful and intuitive programming language for macOS, iOS, watchOS and tvOS. Swift is a modern and easy to use language. It provides to developers easy apis to have greater functionality with less code.
React Native is a JavaScript framework for writing real, natively rendering mobile applications for iOS and Android. React native is optimized for iOS platform. Performance applications with nice design it is much easer with React Native.
Android development
Java is the technology of choice for building applications using managed code that can execute on mobile devices.
Kotlin is a powerful and intuitive programming language for Android, Android Wear, Android TV. Kotlin is a modern and easy to use language. It provides to developers easy apis to have greater functionality with less code. Kotlin is officially supported by Google for mobile development on Android.Since the release of Android Studio 3.0 in October 2017.
React Native is a JavaScript framework for writing real, natively rendering mobile applications for iOS and Android. React native is optimized for iOS platform. Performance applications with nice design it is much easer with React Native.
Web development
Java EE, Spring, GWT, Hibernate, Struts, Grails
React JS, AngularJS, ExpressJS
Rails
Django, TensorFlow, DEAP
Oracle DB, Mongo DB, MySQL, PostgreSQL
Devops
AWS, Microsoft Azure, Google Cloud Platform, DigitalOcean, Red Hat OpenStack Platform, Oracle Cloud, vSphere, Proxmox
Jenkins, Gitlab CI
Ansible, Puppet, Packer, Terraform, Ansible Tower/AWX, HashiCorp Suit
Graylog, Zabbix, ELK, Grafana, NGINX Amplify
Docker (Docker compose, Docker Swarm, Docker Cloud), LXD, Kubernetes, Rancher, Red Hat OpenShift, Nomad
NGINX Plus/NGINX/NGINX Unit/NGINX Controller, Apache, Tomcat, HAProxy, Keepalived, Varnish
