Does pilot job exist untill 2050?

The simple answer for this question is YES.

1.  It is possible to fly an airplane automatically but it is not allowed to transport the passengers on board. Of cause we have auto pilot that could even land the plane automatically but it is still relying on the pilots hands to set up those systems.
2. The new generation aircraft that Boeing and Airbus are currently introducing will be in the market for approximately 40 years. For example the new generation Boeing 777x will be launched from 2022 and finishes their assemble at around mid 2040s. The airplane usually flies for 20-35 years. If this is the case, the pilot job will definitely going to exist until mid 2050s.
3. Most of the commercial airliners are attached with the radio and transponder. Radio is used for the ATC (Air Traffic |Control) clearances. Planes cannot fly without any ATC instructions. Also the instrument Transponder is the one of the radio equipment that are used to inform the ATC the Aircraft registration, Altitude, Speed and their destinations. But the one of the most important feature about this instrument is to tell "What" situation are the planes in. This includes the serious threat to plane such as terrorism or the serious technical fault of the aircraft. These systems are all set by hetmans and decided by humans as well .
4. Another aircraft system "TCAS" are also set by pilots as well. TCAS stands for Traffic alert and Crash Avoidance System. As you can see this instrument is used to avoid the mid air crash between the aircrafts. This instrument just give the pilots a instruction so the both pilots have to respond to those alerts.

Mainly those are the prime factor of why plans cant fly by its self. There might be technology advance in few years but in my opinion, the pilot job will remain the same until 2100.