@echoing-computer-87366 IMO: Tiktok being banned here has nothing to do with you building something using its APIs.
As long as you are not enabling access to Indian users to Tiktok (by say, side stepping the banned IP addresses, etc), I think it should be totally fine.
If the company / product is linked to you, then you may need to introspect during distribution or launch of the company. (Not sure about that). Might make sense to register the company abroad? Depends on the product and what you are building.
But as a developer working on it, should be totally fine.