Yes, you can absolutely join an aviation career after the age of 28.
CPL is a DGCA license allowing pilots to command aircraft, perform flying tasks, and get paid in various aviation roles.
The AME course trains individuals to maintain, repair, and inspect aircraft.
Aeronautical Engineering focuses on designing, developing, and maintaining aircraft and spacecraft.
Aerospace engineering is the branch of engineering that deals with the design, development, and testing of aircraft, spacecraft, and missiles.