FYI: I do not work for any of these companies. Just sharing the info with the Ada community:
https://careers.uk.leonardo.com/gb/en/job/R0001290/Lead-Software-Engineer-Embedded-Ada
https://jobsearch.serco.eu/jobs/job/Senior-ADA-Developer/11117
https://careers.rtx.com/global/en/job/01798451/Ada-Software-Engineer-II-Onsite
https://careers.rtx.com/global/en/job/01791371/Software-Engineer-II-Military-Avionics-FMS-Onsite
Also: http://www.cs.kuleuven.be/~dirk/ada-belgium/jobs/. 3 new job-ads were added in recent weeks.
I see Alstom mentioned. They are indeed in the look for people who know Ada and they sometimes do not mind teaching new people Ada (but they probably want people with previous experience). I cannot share my sources, but I was very very surprised when a person close to me asked me if I knew Ada (when I mentioned), as they needed people who knew it, but as they could not find them, they generally teach them… And this person is not a software programmer, but a manager…