Is it necessary to take 4 year education path in technology sector?
I agree with Zach. It's worth the patience and commitment to go that route in today's competitive world. Most of my people in India have master's degrees and very few in the US have them. You will be competing offshore more and more in the future.
The tech field is relatively easy to get into without a 4 year degree. However robotics is a bit more tricky. If you want to build robots i recommend getting a bachelors in mechanical engineering and a masters in robotics.