Position: C++ Developer
Category: C++
English level: intermediate
Years of experience: 1

Science: mathematical model to predict crack propagation paths (in rails, for example).

Business: application (for administrative staff of masterteile.com.ua, therefore I can not show it here) to upload and parse large (500K-1M car parts each) Excel pricelists. These *.xlsx files are unzipped (miniz library) and parsed in backend using C++ and C (my own low-level fast code), information is shown to user via web interface. User can store carpart codes and prices with metadata (brand, supplier, datetime) in PostgreSQL DB (pqxx library). User can search carparts in large DB by code and obtain comparison table showing lowest price; user can also exclude some prices temporarily and immediately see the cheapest carpart among remained (jQuery). User can also deactivate/activate pricelists for long term (POST request, cgicc library).
C++: science (rigid body mechanics), mathematical models to predict crack propagation paths (in rails, for example). 

Web Development (CGI (C++), PHP, Perl, Python, JavaScript, jQuery, MySQL, PostgreSQL).