After a series of rejections, Darcy gets drunk and decides to apply to another job and writes the cover letter completely smashed, and starts writing about how she tased Thor and all the stuff that went down in New Mexico. Despite this she some how still manges to land a job at SI or SHEILD (I can't remember which).
I would really like to read this again but have no idea where I read it in the first place. I think it was on AO3 but I can't be sure, I hope someone knows what I'm talking about despite the little I remember.
FOUND! Thank you! The fic is The Kitchen is the Heart of the Home