I am a team leader for a SW Team which got freshly merged with another team. One of the new team members (call him Member X) is showing really bad performance and most of his tasks only get finished because he is asking his colleagues (Member A,B) the whole time and let them do 70% of his work.
Also Member A and Member B are complaining about him that he costs them a lot of time and slows them down. I would like to say that Member X is kinda fresh in his job but he is doing this for almost 4 years and his performance was never noticed/communicated/cared about (and also ignored by the upper management) because he is working on a different office and the responsible management person was about to leave and didn't care anymore.
I tend to advise Member A and Member B now to reduce their time in helping Member X so that he has to come up with own solutions and learn from this. But honestly I do not know if this is a good idea.
Do you have any good ideas how I can improve the performance of this colleague? In first steps I would not like to involve higher management and solve this on a team level.