Dr. S. Ahmad took his postgraduate degree from Allahabad University, Allahabad and Ph.D. from BITS, Pilani in 1965 and 1970, respectively. This was followed by a brief teaching assignment at BITS, Pilani for about four years. While working in Central Electronics Engineering Research Institute, Pilani, for more than three decades, he headed various R&D project activities related to high reliability Silicide VLSI interconnects, micro and millimeter wave semiconductor devices, high power laser source packaging, micro-electro-mechanical systems (MEMS) based microsensors – mechanical, chemical and biosensors. A class-100 clean room laboratory, equipped with modern device processing and characterization facilities, was set up by him to undertake sponsored project of 100 GHz silicon double drift region (DDR) Impatt development. Later on, this laboratory was augmented with additional facilities to undertake sponsored projects on high power laser source packaging and MEMS based microsensors development. Under his supervision various semiconductor devices namely - silicon Baritts, millimeter wave Impatts, high power CW laser sources for medical applications, MEMS based piezo-resistive pressure sensors, acoustic sensors, capacitive pressure sensors, RF switch and polysilicon load cells were successfully developed in various programs. He supervised his team to undertake comprehensive semiconductor device design activity using numerical solutions of charge carrier transport equations under practical boundary conditions. These efforts resulted in about 60 publications in national and international journals and about a dozen patents. Dr Ahmad supervised the successful development of bulk and surface micromachined capacitive pressure sensors under National Program on Smart Materials (NPSM). He has also been coordinating the CSIR Network Program on MEMS and microsensors in which nine CSIR laboratories are actively participating to develop five families of chemical and biosensors. His current interests involve applications of nanomaterials in MEMS/NEMS devices for health diagnostics, drug delivery and drug discovery and industrial applications of nanotechnology in association with CII and Indian industry.

Dr. Ahmad visited Europe, USA, Japan and Australia under various programs like German Academic Exchange, Alexander von Humboldt, UNDP and NSF Fellowships and many other exchange visits. He is a Fellow of Indian National Academy of Engineers (INAE), Institution of Electronics and Telecommunication Engineers (IETE) and the Chief Editor of IETE Journal of Research.  He is recipient of 19th RL Wadhwa Memorial IETE Gold Medal Award. Dr. Ahmad was Director of Central Electronics Engineering Research Institute, Pilani and after October 2003 he served as Director Grade Scientist in Pilani for another two years and coordinated MEMS related R&D activities under different programs. On 14^th October 2005, he joined academia as Vice Chancellor of Jamia Hamdard (Hamdard University), New Delhi.