Raju Kumar Mishra is a consultant and corporate trainer for big data and programming. After completing his B. Tech from the Indian Institute of Technology (ISM) Dhanbad, he worked for Tata Steel. His deep passion for mathematics, data science, and programming took him to the Institute of Science (IISc). After graduating from IISc in computational science, he worked for Oracle as a performance engineer and software developer. He is an Oracle-certified associate for Java 7. He is a Hortonworks-certified Apache Hadoop Java developer, and holds a Developer Certification for Apache Spark (O'Reilly School of Technology and Databriks), and Revolution R Enterprise-certified Specialist Certifications. As well as this, he has also passed the Financial Risk Manager (FRM I) exam. His interest in mathematics helped him in clearing the CT3 (Actuarial Science) exam.