Hello Janani, there are many fields under Biotechnology with bright career under each. You can find our expert advice on each field under http://www.biotecnika.org/category/career-advice/
Biotechnology field is a rising sun, with hundreds of companies working on different aspects. You can give competitive exams like CSIR NET, GATE and follow a career path in research. You can enter private sector jobs and even public sectors like ONGC, FSSAI etc. You can move into R&Ds of such companies or even look for quality control positions in industries and manufacturing. For details on the latest job notifications you can follow http://www.biotecnika.org/category/biotech-jobs/