I do the same. I can SSH into my router at home (which is on 24/7), then issue a WOL request to my dev machine to turn it on.

You don't even have to fully shut down you dev machine, you can allow it to go into stand-by. For that it needs to be wired by cable to LAN, and configured to leave the NIC powered on on stand-by. You can then wake up the device remotely via a WOL magic packet. Maybe this is possible with WLAN too, but I have never tried.

Also, you don't need a Tailscale or other VPN account. You can just use SSH + tunneling, or enable a VPN on your router (and usually enjoy hardware acceleration too!). I happen to have a static IP at home, but you can use a dynamic DNS client on your router to achieve the same effect.