David is an independent consultant focused on technical assistance for growing startups: architecture and strategy for platform development and API design, technical due diligence on both humans and software, and tactical software engineering. He s the author of Learning PHP 5, Essential PHP Tools, and co-author of PHP Cookbook. His scintillating blog is at http: //www.sklar.com/blog/. David lives in New York City and has a degree in Computer Science from Yale University.