It depends on the technology used to be honest and the company, normally I would advise the person concerned to make sure they know what technologies they may be working with as they are likely to be asked questions around those. Next be up to date with knowledge about the stack you are likely to work with. Go over some coding best practices and definitely look into design patterns.
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When people ask you about how to prepare for the technical section interviews, what do you suggest to them?
It depends on the technology used to be honest and the company, normally I would advise the person concerned to make sure they know what technologies they may be working with as they are likely to be asked questions around those. Next be up to date with knowledge about the stack you are likely to work with. Go over some coding best practices and definitely look into design patterns.