novicef
I suspect "part-time" work as tech crew with a large would be nigh on impossible. However, job-sharing might be the way to go.
I believe that
VB has a husband/wife team. Both hold commands and share the one job/income.
I am aware of other jet operators who will consider job sharing. If considered favourably, it's my guess that you'd have to be able to be in the same city as your co-pilot, and would have to agree to the ratio of flying, then have the company agree to the concept.
It'd be ground breaking but I know two F/Os in the organisation I work for who would be happy to job share. Sadly for them they're in different cities.