While I’m not an expert in any capacity, you’re probably looking for something with remote or delayed damage, so that you can focus on dodging boss mechanics, which can oneshot you.
Which leans into either the pets territory, or AoE/DoT territory.
For the former, one of these two could server you well:
For the latter, this one is an option:
Of course, there are probably various other builds that can do it, so perhaps experienced forum dwellers will chime in with recommendations.
Do keep in mind that with the 1.3.1 patch coming up, some of the over-performing builds are being brought back in line.