Wordpress Theme from Scratch

I've been asked to oversee the development of a wordpress theme for a science and technology organization. I'm looking for an experienced organization that can provide wordpress theme development. I will want to work closely with you as the project progresses, so communication is key. If you are interested, please PM me with your portfolio, basic pricing and company website. While I'm not totally averse to independent designers, you will need to have a very impressive portfolio for consideration. Thanks!