Does traefik work with self-signed certs for TCP services?

Without using insecureSkipVerify.

I'm using a self-signed cert for a backend service. I keep getting the error:

certificate signed by unknown authority

Simple question: Does traefik work with self-signed certificates for a service that's listening on a TCP port? I'm not talking about a HTTP example with whoami. Anything else listening on TCP using TLS with a self-signed certificate.