Android background service expert needed now

Budget:20$,need to start now only. 1)App is having 2 background services and it does not run more than few mins or max 1 hr. 2)Need to continuously run background services. 3)Need to optimise code. 4)Will check the code, test it, and it should run 24X7 with no crashes, you have to make sure it runs 24X7 and then ask us to test it. 5)These background services should work on all mobiles. 6)Need to have bitbucket account so that you can push the code and test it here. 7)When change of internet from wifi to 4G or on phone call also ,it should work or restart after this. 8)If crashed then it should restart automatically. Please apply only if you have experience with background services in Android. This is few hrs job for expertise.