Initially I worked in food service and on phpfreelancer. I spun that into consistent consulting work until a client offered a full time position (less than 15 people, no background checks).
As the years rolled by, I kept moving around. Eventually I tried at a large company(around 8 years ago) and nothing showed on the background check.
I do NOT recommend being upfront, unless there are no formal procedures in place and being honest actually helps. We are talking about your ability to feed and shelter yourself, so give up on the “honesty” thing. I have -never- been able to provide for myself after having been “honest”. [edit: after reading felonintexas let me update this. If someone point blank asks, tell them. Don’t volunteer this information. There is nothing to be gained]
Also, you are now an edge case. That means most advice doesn’t apply. This is both exciting and horribly anxiety driving at the same time. You will have to become comfortable blazing your own path and doing things others say is not possible.
Seriously, good luck. It is possible. It is amazing what you can do that everyone else thinks can’t be done.
I re-binged "Last Week Tonight" a month ago. There is an episode on the prison system in the USA and the obstacles people face upon release. I remember one case where the person wrote on his job application as employed by the "State of <insert state>" while he was in prison. (it must be this episode: https://www.youtube.com/watch?v=_Pz3syET3DY).
I haven't been convicted of any crimes, so I don't have own experience. From people I know, they continued working in tech as contractors/freelancers, but for small fry (as big banks will be very thorough on your background (criminal/credit scoring) checks).
Doing small gigs for small companies where you don't handle personal/sensitive data can give you enough time to (as the parent suggests) have this 'forgotten'.
Would you consider moving to another country?
FINRA (Financial Industry Regulatory Authority) is the public face of the USA's "Securities and Exchange Commission". They write the rulebook on who gets to work in the industry (stockbrokers, investment bankers, and the like).