The feature is interesting and I'm sure you're in good faith, but you're effectively doing LinkedIn-scraping, just outsourced to your users. Why not use the official API?
(The GDPR implications of this service are also significant. Being in the US does not exempt you from observing that if any of your records are from European users.)
(The GDPR implications of this service are also significant. Being in the US does not exempt you from observing that if any of your records are from European users.)