I know nobody wants to do the "software engineers vs engineers" debate again, but even if we are going come down on the "programmers are software engineers" side of that debate, a site which exclusively serves software engineers shouldn't advertise itself as for engineers generally. I was excited to see what EE's would be chit-chatting about. :(
As a suggestion -- it might make sense to put a link to your demo page right near the top of your main 'jointaro' site somewhere, it did a good job of showing what the value proposition is.