Here's a list of URLs for headhunters that I've collected. Most of these deal with Unix and SAP R/3 folks...
I have not dealt with any of these people, so I give no recommendations...
The University of Waterloo Math Faculty Computing Facility has been a fertile ground for Unix developers for many years. They have produced a lot of small Unix utilities. lc is a directory lister competitive with ls. Its "claim to fame" is that it:
Is extremely portable to many versions of Unix
It is compilable and usable on any system that has C libraries smart enough to know about directories, files, and the possibility of other sorts of objects that may look like files. I used it many moons ago under Atari TOS, which basically looks like a cleaned-up 68000 version of MS-DOS, and it worked OK there.
Organizes the file listing based on file type. For each of the following categories, files are grouped under the following headings:
Block Special Files
Character Special Files
MPX Character Files
MPX Block Files
Unsatisfied Symbolic Links
An alternative to cron, implemented in Scheme .
What web page about Unix would be complete without a reference to the classic document, DEC WARS!
DEC WARS! tells the story of young Luke Vaxhacker and his fight against the evil Lord Vadic, preserving the galaxy against the dread Rmstar, armed only with a bytesaber.
An early Unix for 6809 and 68000, source now available.