Finding a programming problem for a (possibly) Qt project with a limited time interval (interview level)

Question

What would you suggest would be a good test for a programmer to show us his skills? I am thinking of a small demo implementation of a GUI program that won't take too long.

Here are the circumstances: (this should not imply an intention to find programmers here, I think there were other forums for this)

We are planning a project with a limited time frame, but, apparently, we lack resources, so we want to attract external developers. The project targets Qt (although it is not yet fully installed) on the Windows platform. We would prefer Qt, because it allows you to use your own resources later, when functions need to be added to the software, and we are familiar with the Qt platform.

The project must interact with the HID USB hardware (write some data blocks, read the result, within the guaranteed time frame) and a graphical interface that displays the graphs of the analyzes.

The main goal, however, is not to find a Qt programmer (although we would prefer it), but a capable programmer, so the problem is an important part of this issue.

Answer 1

Do not ask programmers to write something from scratch as an interview. This is too suspicious.

Think about the qualities that you want in the developer, and then write an application in which all this is done incorrectly, and ask them to fix it. For example, if you need an object-oriented developer, give them an application with data tables directly linked to the user interface, and ask them to do this OO - this means that they can show you in a few minutes that they have OO skills.

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