VTech

Architecting, designing and coding
c# .Net 1-5, c++
Infrastructure, application servers & services and utilities.
Cross machine and platform components
Network & protocols, DB (SQL and Non-SQL), finance and 3 party libraries, facilities and components
Profiling, Monitoring, problem-solving, guiding, managing projects, code reviewing and more.

Windows OS for PDAs

Writing C++ (More Windows and Less Unix/Linux) applications, services and utilities

Architecting, Designing, Writing, Profiling, Maintaining and managing versatile languages and os for the last 18 years.

HLD, LLD documents
UML diagrams and flows