Many of the positions unfortunately are for grad students and postdocs, but there are a lot of CFD software developer positions posted here. It is a good place to check periodically to see what is available.
Glad you found the original post helpful, and thank you to @atrettel for the additional posts, the job board was especially helpful. Sorry for the delay in replay, as HN has no "waiting replies" notification, so I only noticed based on number change.
From looking over the jobs @atrettel linked to. One other point, is there are actually a lot of different fields other than the "norm". There tends to be a stereotype that its all rockets, airplanes, and cars, yet there's a bunch of others.
Healthcare CFD (Worcester Polytechnic Institute, Ohio State University), Food CFD (University of Michigan-Dearborn), Ocean CFD (Louisiana State University), Plasma CFD (University of Texas at Austin), Civil CFD (UC Berkeley), Petroleum CFD (Pennsylvania State University), Environmental/Pollution CFD (New Jersey Institute of Technology), Weather/Hurricane CFD (Florida International University), Mining/USGS CFD (Colorado School of Mines), CUDA/GPU CFD (Altech LLC), and a bunch of others.
So being from a certain background should not be a worry. There's a lot of industries to lateral in from. The only issue is the limited job pool. However, I started at NASA simply writing software (Perl, FORTRAN, Linux), with a background and knowledge of CFD.
https://www.cfd-online.com/Jobs/
Many of the positions unfortunately are for grad students and postdocs, but there are a lot of CFD software developer positions posted here. It is a good place to check periodically to see what is available.
Good luck!