Yes, we do! Please don't let immigration concerns stop you from contacting us. I'm personally a US citizen and an engineer, not an HR manager, so I don't know a lot of the details around this, but we definitely can sponsor H1Bs. I do know that if you email jobs@nextdoor, it will end up in the inbox of someone who is much better qualified than me ;-) to answer any questions you might have about H1Bs and immigration.