Excellent Tutor with over 12 years of industry experience

Abhay R.

Electrical Engineering

I took a course in Feedback Control Systems during my undergraduate studies. I also took a course in Digital Control Systems during my graduate studies. Decades later, when my kids were taking courses on Control Systems theory, I was not only able to help them understand the concepts in a systematic manner, but also able to learn and teach more advanced concepts like non-linear Control Systems theory.

Information Technology

Worked from 1990-1995 at Center for Development of Advanced Computing (CDAC), a premier R&D institution created to build a parallel processing super-computer in India. I lead a team of engineers to help design and develop the data-link layer for the custom interconnect used to communicate between different processing nodes, with particular emphasis on performance. This required a deep understanding of computer networks, network protocols (OSI and TCP/IP), device driver development on a UNIX (Solaris) platform, C language, and software development methodologies available on UNIX. After that, I worked from 1995-1998 at Querisoft Technologies that was based in India and had its main office in Atlanta, GA. I initially worked on Microsoft Web Server (IIS) technologies to develop an anti-hacking server-side plug-in that would help detect and block suspicious and malicious attacks on IIS servers. This required a good understanding of the architecture of Web Servers and Browsers, C++, Visual Studio, Windows security architecture, and Windows system management. Later on, I worked on developing the user interface for an internet banking platform. This required a good understanding of HTTP, HTML, VBScript/JavaScript, C language, as well as the Document Object Model (DOM) used by Web Browsers. Then, from 1998-2001, I worked at VeriSign, Mountain View, CA. Initially, I worked on developing an ActiveX control and a Plug-in that could be installed on a Web Browser to encrypt/decrypt as well as digitally sign/verify documents. This required a very good understanding of C, C++, ActiveX control and Plug-in architectures, DOM supported by both IE and Netscape browsers, cryptography standards like PKCS, X.509, DER/BER encoding, Microsoft Cryptography API (CAPI) and Smart Cards. I was later involved in implementation of a code-signing software that could digitally sign executables using digital certificates issued by VeriSign. Finally, I was involved in the design and implementation of a Microsoft Outlook plug-in (aka ActiveX cont