Ask HN: How would you code this? (noob question)

Sorry if this is too easy.

Image you have all the public LinkedIn profiles :)

How would you write an algorithm that: * receives an input of linkedin profile(s) * returns an output of different linkedin profiles

such that output profiles are 'similar' to input profiles

Example: - Marketing segmentation analysis. You give me your current customers e.g. head of sales at slack etc and I give you other head of sales at tech companies - Investors: You give me a list of investors you are currently talking to and we give you back a list of potential investors in your space - Sales - Hiring etc

Any ideas or links would be greatly appreciated. Are there any general algorithms that can do that?