Dr. Raj Kumar is working as assistant professor at department of Computer Science, IET Khandari Campus of Dr. Bhim Rao Ambedkar University, Agra. He is having 22 years of experience and 1 year experience of industrial. He is graduated from Banaras Hindu University, Varanasi and achieved his MCA degree from IT, BHU. His research area is designing and modelling ciphers for computer networks. He has written several books on computer science on system designing, e- Commerce and associated with Oswaal books in developing IP and Computer books for CBSE, ICSE and other boards. He is member of CSI i.e. Crypto Society of India and honorary secretary of Council of IT Development, UP. He has published dozens of research papers in national and international research journals. He has also worked with Electronics Corporation, Govt of India in UNDP projects for one year as project associate and contributed in developing Bhoolekh for Uttarakhand government. He has supervised hundreds of software projects at MCA, M.Tech and MBA(IT) students of the various universities like IGNOU, DU, BHU and IIT Kanpur. He is counsellor at IGNOU study center, St. John’s College, Agra, He has delivers centuries expert lectures at various institutions in India and abroad. He is the member of technical review committee of several computer offline and online research journals.