After diploma I would suggest you to go for degree courses because nowadays there are less chances of getting job after diploma. But still you can work jobs such as in shops where household electronics are repaired, radio repairing shops, electrician, TV etc. Industries look for educated people with a good degree and this branch is very demanding in today's time. So, once you do your degree there are vast job options for you.

Well for you I can suggest some courses after diploma in ECE given below- 

• Networking
• Circuit designing
• Java
• Animations
• Embedded systems
• Internships in companies

Job opportunities after completing these courses are BSNL, ECIL (electronics corporation of India), DRDO etc

• Mobile App Development
• Web Programming
• Application Development.
• UI / UX Development Framework
• Project Management
• Data base administration .