1. Hadoop is currently a good course for people who pursue employment in the database, data storage sections of MNCs, banking, logistics etc. This course gives you an upper hand over other B.Tech freshers because, you will be an expert in handling huge data as project managers, analytical/software/testing professional. It is a good choice in your education career as a computer science graduate.
2.We all know that degrees and certificates alone do not get the dream job. You need good grasp of the subjects, a reputable score/projects.
Many job adverts allow final year exam going B tech students to apply for jobs, you can start this soon.
3. Once you complete, prepare a good CV and then register on job portals (linkedin,internshala,naurki etc). Try your best for campus interviews because it saves a lot of time, even if it means to take a second or third choice companies to work with.
4.If you don't get a quick break, look into doing an internship in a reputable company like Infosys, Wipro, TCS or their outsourcing agencies. The top companies do have global internship programs that gives your a better edge on the worldwide platform as a fresher.
5. Try to work on live projects with start-up or self-made entrepreneurs, here you get a chance to interact with people who have good insights in the field and you will develop useful contacts.
6. Persevere with your quest for the job etc, consider the GATE exams and or PG studies by regular or distance mode. For instance, if you get a decent job as a fresher with your B.Tech, you can enroll for a MTech via IGNOU or future online certification course that will enable you to progress up.