Saw your question in the EMTLife introduction thread and thought the following might help. Bowers Ambulance (owned by Rural/Metro) has one job posting (10 positions total) listed for their operations in the LA County area.
https://careers-rmetro.icims.com/jobs/3613/emt-basic/job
https://careers-rmetro.icims.com/jobs/3613/emt-basic/job