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SearchForce, ClickEquations, AdGrok (YC company) all have good solutions. There are other similar providers as well...

ClickEquations and SearchForce seem to target companies far larger than my side-project.

I got a demo account at AdGrok, but they don't seem to provide an automated bidder. Will keep looking though.

Thanks again for the information zoomzoom!

Thank you! Will look into them.