General trends:
- Backend developer (PHP or Java based).
 - Architect (S.O.L.I.D. lover, Scrum-follower, DDD-fan).
 - Microservice-trended
 
OSes:
- Linux server administration (proficient). Installed from scratch and tuned LAMP-stack web servers based on CentOS for my customers.
 - Windows desktop administration (proficient). Use Windows workstation every day.
 
Languages:
- PHP (expert). From scratch development of complex websites, various custom systems and one billing&accounting system.
 - Delphi (expert). Commercial products written.
 - Javascript (intermediate). Not a front-end genius, but developed some custom ReactJS components for websites.
 - Java (intermediate). Two successful projects in past: DistribuCalc and ShieldSuite
 - CSS (beginner). Not really doing anything serious with CSS, but looking forward to try and learn things, while excercising something like BEM or OOCSS.
 - C# (.NET, beginner). Just enjoying the power of this language. Closely watching Mono.
 - Bash (beginner). Wrote simple automation scripts for Linux servers.
 
Frameworks:
- [PHP] Laravel framework (expert). From scratch development of complex websites.
 - [PHP] CakePHP (intermediate). Maintained a project, that was using it.
 - [PHP] Symfony framework (beginner). Just enjoy this wonderful piece of art and follow its news.
 - [PHP] Yii2 framework (beginner). Used it in one project.
 - [CSS] Twitter Bootstrap (intermediate). Used in a new project.
 
Libraries:
- [JS] ReactJS (intermediate). Developed custom components for one of the websites using ReactJS.
 - [JS] jQuery (intermediate). Used it in almost all PHP projects.
 - [Java] JOOQ. Used it in my commercial Distribucalc project.
 
Database servers:
- MySQL (expert). Used in 90% of my projects from forums to billing systems.
 - PostgreSQL (intermediate). Used it in one project as a powerful MySQL alternative.
 - MS SQL Server (beginner). Used it as a backend storage for a retail accounting system.
 
Tools:
- Git (expert). Using git branching model every day (release-, feature-, task-branching)
 - Ansible (intermediate). Used it to build custom Vagrant environment for dev purposes.
 - RabbitMQ (intermediate). Used as a communication method for delayed tasks using SOA.
 - Redis (intermediate). My caching system fo the choice.