Memphis, TN
American Roamer (<a href="http://www.americanroamer.com/" >http://www.americanroamer.com/</a>)
We track all the cell phone coverage in the world and have been for 20 years. Our cellmaps product line has been used to build interactive coverage maps for carriers and an in-browser spatial analysis tool for comparing primarily wireless and cable datasets. We're a small company with a small engineering team but we're dealing with engineering at scale as our infrastructure is rendering and pushing out millions of map tiles a day.
Our business and products are growing rapidly and we're looking for someone with significant software engineering experience to come in as a mentor in the position of director of software development. You'll be a major player during our shift from a data company to a software company.
Some technologies we use that you may find interesting: aws,  node.js, solr, mongodb, javascript, ruby, c, rails, chef, and others.
Email us at REDACTED_EMAIL if you're interested.
Ask HN: Who is Hiring? (September 2011)