Ms. Rajni Gupta is an Assistant Professor in the Department of Mathematics at St. Stephen's College, University of Delhi. She has obtained a B.Sc. degree in Mathematics (H), where she was awarded 2nd university position, followed by M.Sc. and M.Phil. degree in Fusion Frames from the Department of Mathematics, University of Delhi. She is pursuing her Ph.D. in Mathematics from University of Delhi.

She teaches undergraduate courses in Calculus, Multivariate Calculus, Differential Equations, Linear Analysis, Network Flows, Statistics with R, Number Theory, Calculus of Variation, Abstract Algebra and Real Analysis. She has also mentored undergraduate research projects under the Prof. Nagpaul Fellowship. In addition to her research and teaching, she has held several academic and administrative responsibilities at the College including serving as Staff advisors of different societies and IQAC subcommittee member.