Hello everyone, Red Fox Software (Unofficial name) is currently seeking a Technical Writer to developing an epic story of action/adventure video game which is currently named: Tropical Heat (Unofficial name). If you have experience in writing game story and would like to work for an independent game studio please submit your application via email or reply to this post, for further information about this project. Thank you. Programmer, Julio A. Cruz

The term "technical writer" doesn't mean what you think it means:

http://en.wikipedia.org/wiki/Technical_writer

A technical writer is a professional writer who designs, writes, creates, maintains, and updates technical documentation—including online help, user guides, white papers, design specifications, system manuals, and other documents.

Perhaps the plot is inspired by the day-to-day lives of technical writers, and they're looking for someone with a particular understanding of the topic.

Or perhaps you're right and they just want a writer.