[numerik_meister]

Random idea, have you tried applying at a university? Sometimes big research groups have additional employees (not Ph.ds or postdocs) who just assist in software development. Due to the low salaries they are always desperate for hiring. Also there are a lot of older employees in the IT departments at universities, so maybe ageism would be less of an issue. Not sure how they deal with ex-convicts.

[throwaway301010]

Unis are more open to inclusive hiring from what I hear so that may be worth exploring, but they also have safeguarding issues as they have young people there - though as a money launderer not a kiddy-fiddler I'm not sure how worried they be, unless they'd worry about moral corruption!

[hogrider]

On the other hand, in academia you are nuch more likely to find the moral relativistic nihilists that wouldn't care a past white collar crime conviction.

[milliams]

We post these kinds of jobs on the Society of Research Software Engineering website at https://society-rse.org/careers/vacancies/

I can't speak for how any of their HR departments would treat your case though.

[throwaway301010]

Great resource - thanks very much - I was looking at find just this type of thing, also I found https://www.jobs.ac.uk/