Yes, it is possible to switch from a career as a Business Analyst to a Big Data Engineer. To transition, you may need to acquire technical skills in big data technologies such as Hadoop, Spark, and databases, as well as programming languages like Python or Java. Gaining relevant certifications and practical experience through projects or courses can help facilitate the switch.
If you are planning to get into this field then I would suggest you enroll in this Big Data Hadoop, Spark, Storm and Scala Training from Intellipaat for better understanding of concepts.
Along with that I would suggest you check out this video about Binitha how she cracked Big Data Engineer job with 300% salary hike with the help of Intellipaat.