indeed - Find jobs using Indeed, the most comprehensive search engine for jobs.
FileProInfo - It's All About Files, Software, Online Tools - 100% Free
LinkedIn - LinkedIn is a business-oriented social networking service, mainly used for professional networking.
File-Extensions.org - Large computer file extension library with detailed explanation of each file type with links to download free or associated software programs.
Jobvertise - Free online jobs database, easily post jobs and search resumes.
FileInfo.com - FileInfo is the central file extensions registry and contains a database of over 10,000 file types.