The solution shown in this post worked for me. I was generating the binary using BuildCookRun with UAT. After the process was done, I would run this script to fixup the missing paths:
install_name_tool -add_rpath @executable_path/../UE/Engine/Binaries/ThirdParty/Intel/TBB/Mac Contents/MacOS/YourExeName
If you are using code signing, you will need to re-sign the executable after you run the tool.