Hello aspirant, 

So, Biotechnology covers a broader scope in natural sciences, while the principles of biomedical engineering mainly on medicine and engineering principles.Both biotechnology as well as biomedical engineering overlap to some extent, but are different. Both are upcoming, sunrise fields that have bright career future.

Biotechnology engineering is the study, research and development of bio-organism, micro-organism and cell functions in living beings. The course combines engineering with other subjects like chemistry, genetics, bio-chemistry and microbiology.

Students with Biotechnology degrees can work as laboratory technicians in various research centres, hospitals, healthcare centres and universities.

Many pharmaceutical companies hire postgraduates in biotechnology as research scientists

Average package is around 2.5 to 3.5 lakhs p.a 

So it's your choice both are best choices.