What can I do to protect my tech IP so that any developer leaving the company can't steal the source code? Also, I want to give laptops to my team members so that they can work from their home, however I am not sure what process I should follow to protect my tech assets.
If you're using source control, it's easy to track source and control access — or revoke access — if someone leaves the company.
Also, your developers should have signed a contract about the project itself that clearly places the source code under your/the client's/the company's control, and if/when they leave, they release all rights to code created under that contract.
You can never be 100% sure, but these small steps will at least ensure a legal high ground should anyone steal code.