I’m based in the UK, have been developing with B4A for 5 years, and currently actively support and develop (ongoing) a B4A app for engineers who need to work offline in clean rooms, biological hazard rooms, etc., servicing and repairing safety cabinets, fume cupboards etc. with no wifi or mobile signal.
The engineers tablets store the details of the jobs their working on, and report data for that job, when finished (or every week) they get sign-off with signature for the services performed that week (there is PDF preview of the reports), and when they have a WiFi or mobile signal, the report data is synced to the server (aspx-based) and finalised signed reports are emailed to the customer.
As I run my own uk-based vat-registered limited company, I am not looking for a job I’m afraid, but I am happy to work on contract if you like, and would be happy to discuss further if you are interested.
p.s. I also wrote a B4X app for iPhone and Android phone which the engineers use to view their scheduled appointments for the week.