As a Software Tester, you will need to master following:

• execute software tests
• levels of software testing
• perform software unit testing
• provide software testing documentation
• replicate customer software issues
• software anomalies
• software architecture models
• software metrics

More generally, a software tester is also versed in:

• address problems critically
• report test findings

It also helps to know the following:

• ABAP
• AJAX
• APL
• ASP.NET
• Agile project management
• Assembly (computer programming)
• C#
• C++
• COBOL
• CoffeeScript
• Common Lisp
• Erlang
• Groovy
• Haskell
• ICT debugging tools
• ICT performance analysis methods
• ICT project management methodologies
• Java (computer programming)
• JavaScript
• LDAP
• LINQ
• Lean project management
• Lisp
• MATLAB
• MDX
• ML (computer programming)
• Microsoft Visual C++
• N1QL
• Objective-C
• OpenEdge Advanced Business Language
• PHP
• Pascal (computer programming)
• Perl
• Process-based management
• Prolog (computer programming)
• Python (computer programming)
• R
• Ruby (computer programming)
• SAP R3
• SAS language
• SPARQL
• Scala
• Scratch (computer programming)
• Smalltalk (computer programming)
• Swift (computer programming)
• TypeScript
• VBScript
• Visual Studio .NET
• XQuery
• application usability
• conduct ICT code review
• debug software
• develop ICT test suite
• develop automated software tests
• execute integration testing
• measure software usability
• perform software recovery testing
• plan software testing
• query languages
• resource description framework query language
• software components libraries
• tools for ICT test automation
• unstructured data
• use scripting programming
• audit techniques
• computer programming
• hardware components
• manage schedule of tasks