As an engineer, I usually cheat and stick to text with typography. I'd put the name in big-and-bold, with detail information below, offset but at least as prominent. I'd describe exactly what it is the product does, add at least a link to some information about yourself or the company and change the "sign up now" button to something like, "enter your email to give it a shot!"

http://pinboard.in/ is my favorite example of engineer-driven-design. You have an advantage: you are an engineer selling to engineers. I'd suggest thinking about what makes you respect a website or noticing which calls-to-action you follow for a week, and then trying to apply those lessons to your own site.