I have used C++ professionally at IES and UWS in additional to using it during my studies. I have also taught the language at university where I was employed as a Lab Demonstrator. Most of my C++ experience has been with GPU industry standards OpenGL and OpenCL.
C# / Java
I have a lot of experience with C# and Java. My experience with Java has been with Spring based servers and Android applications. My experience with C# has been with WPF based GUI applications and bespoke equipment like the Microsoft Kinect sensor.