I'm a longstanding FOSS developer that has mostly focused on contributing to Linux networking codebase, most relevantly the [http://www.netfilter.org Netfilter project]. I live in [http://en.wikipedia.org/wiki/Seville Sevilla] located in [http://en.wikipedia.org/wiki/Andalusia south Spain].
My IRC handle is p4blo.
Questions about using nftables should go to the Netfilter's user mailing list: MailTo(netfilter AT vger DOT kernel DOT org).
You can read the [http://wiki.nftables.org nftables HOWTO] to get familiarized with it.