I am in the Top 500 best programmers in the world according to the Codewars website: https://www.codewars.com/users/nrr .

Programming Languages, back-end web development:

1. Python (Django, Dajngo-Oscar, Flask, Jinja2, SQLAlchemy, Alembic, Scrapy, Celery + RabbitMQ, spaCy, hunspell, pymorphy2, scikit-learn, sorl-thumbnail, Ansible, pytest, Gunicorn, uWSGI, a little OpenCV)(6 years).
2. PHP (10 years).
3. Linux Bash (10 years).
4. C++ (18 years).
5. Java (JSP, Servlets) (4 years).
6. Java (Android) (0,2 year).
7. Pascal, Delphi.
8. Excel, Word VBA.
9. Metatrader MQL.

Layout, markup, front-end web development:

1. HTML5, HTML4, schema.org, microformats.
2. JavaScript, jQuery.
3. CSS (CSS2, CSS3).
4. Bootstrap.
5. NPM, Grunt

Security:

1. Testing the security of your Website or Blog.
2. Testing sites for vulnerability.
3. Internet Security.
4. Intranet Security

Internet, Web servers and technologies:

1. nginx.
2. Supervisor, Gunicorn, uWSGI.
3. Apache web server.
4. Memcache, Eaccelerator, PHP-FPM, PHP-CGI and other PHP and web server's extensions.
5. Plesk, Webmin, Usermin, cPanel and other Hosting panels.
6. DNS Server.
7. Mail Servers.
8. MS IIS.
9. Tomcat, JRun Server.
10. Google Analytics, AdWords, Adsense setup and integration with site.
11. Yandex Metrika setup and integration with site, Integration Yandex's APIs with site.
12. Integration with Yandex API, VKontakte API, Facebook API.
13. RabbitMQ.
14. Redis.
15. Docker, Docker Compose.
16. Apache Solr + Haystack.

RDBMS:

1. MySQL SQL, programing functions, procedures and triggers. MySQL and MariaDB advanced configuration and optimization.
2. PostgreSQL.
3. MS SQL Server 2008, 2000, 6.5.
4. Oracle 8i.
5. Paradox for Windows.
6. MS Access.
7. CA Clipper 5.0, FoxBase, dBase IV, dbf.
8. SQLite.

IDE:

1. PyCharm.
2. PhpStorm.
3. Android Studio.
4. Borland C++ Builder.
5. Borland JBuilder.
6. JRun Studio + Adobe Dreamweaver.
7. Borland Delphi.

OS:

1. Linux CentOS 5.x, 6.x, 7.x; Ubuntu.
2. Docker.
3. MS Windows Server 2012, 2008, 2003, 2000, Active Directory.
4. MS Windows 10, 8, 7, MS Windows XP.
5. MS DOS, PC DOS.
6. Ansible.

Technologies:

1. GIT, SVN.
2. Redmine, JIRA, SharePoint, GitLab.
3. COM/ActiveX Technologies.
4. ODBC, OLE DB, JDBC, JDO.
5. XML.

SEO: SEO optimization, sites advertising, SEO analysis.

CMS: Joomla, Zen-Cart, OSCommerce, SMF, Magento.

Hardware:

1. Knowing hardware of PCs and servers, assembling, diagnostic and solving problems with hardware, installation devices.

I can read and write properly, and also speak but not fluently.