Hiring technical team software engineer/full stack as a non technical founder tips to assess competency

Hey guys I run a non profit enterprise where we help legacy enterprises and also brick and mortar non profits and charities transform digitally through Ai driven solutions and also building right infrastructure for them government and companies pays us to deliver this service so we don’t charge our clients. We are growing the team and wanted to know more about how you would go around hiring someone if your non technical.