Not to move this into the Job forum, but
Don't sell yourself as a cog. YAN nameless, faceless resource for your employer to use, abuse, and throw away. Interview by telling them how you're going to make them money.
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A stupid despot may constrain his slaves with iron chains; but a true politician binds them even more strongly by the chain of their own ideas;...despair and time eat away the bonds of iron and steel, but they are powerless against the habitual union of ideas, they can only tighten it still more; and on the soft fibres of the brain is founded the unshakable base of the soundest of Empires."
Jacques Servan, 1767