[verdverm]

Repeatedly struggling with basic tasks is a warning sign. I'd have this individual write docs / walkthrough to reinforce. If the issue persists, time to move on.

For learning new skills, 10% time working with new tech / tasks.

Why can you not let him spend the three days?

[jsifalda]

We are quite small team (3members), he can make progress with easier and smaller tasks intead of getting stuck on one thing for 3 days without guarantee it will be finished and working at the end

[verdverm]

Junior developers need time and mentoring. Either expectations need to change or you really want a non junior developer.

If the individual is not able to do the learn the basics tasks, you may need to revisit their employment and possibly your hiring process

[jsifalda]

we have been short of developers so the hiring process was literally "we wants you"... so hiring process is not the thing... i want him to get better not to be thinking about anybody else at least for now.