i am student of M.Sc. biotech , want to persue a career in R&D OF BIOLOGICS , theraputic discovery , what should i do next??? any pg diploma in particular for easy entry in research institute???

i am student of M.Sc. biotech , want to persue a career in R&D OF BIOLOGICS , theraputic discovery , what should i do next??? any pg diploma in particular for easy entry in research institute???