Programming languages
| PHP |
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| Java |
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| C# |
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| C, C++ |
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| SQL |
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Frameworks
| Zend Framework |
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| jQuery, jQuery UI |
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| .NET |
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Databases
| MySQL |
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| MSSQL |
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Software design
| OOP |
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| Design Patterns |
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| UML |
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| OCL |
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Others
| CSS |
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| XHTML |
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| XML |
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