“Contribution to technical achievement” in Australia for the purpose of applying for a Lecturer position
I suspect that "technical achievement", within the context of computer science, is a reference to the production and development of computer software/hardware.  Hence, "contributions to technical achievement" is a cue to allow you to give information on any contributions you have made to the development of software/hardware/computing problems (e.g., a program you wrote or helped with).  There is probably going to be some overlap with "creative achievements".