When I came out of the RAF at the end of 1978 with 8000 hours and an ATPL I had no less than six instant job offers (going from BAC 1-11 with Monarch through B737 with Britannia to DC-10 with Laker).
Things are not like that any more.
Being realistic, the only thing I can suggest (assumng that you already have your ATPL) is to pay for a 738 type rating with Ryanair and join as a F/O.
With your background and three years of earning pretty good money, you will be in a good position to get your command.
The world has changed.