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My designation is Senior Software Engineer, where my roles and responsibilities are as of a devops engineer -- build and release and cloud (AWS)
Please help me chose the best NOC code for Canada PR.
You haven't given much information about your job responsibilities here. Regardless going with what you have given, NOC 2173 and NOC 2174 both should work. However NOC 2173 matches more closely.
Also they are both closely related when looking at responsibilities. I would suggest go with NOC 2173.
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