Physicist: quantum field theory, high energy physics, mathematical modeling of metabolic systems, erythrocyte, free radicals, neural networks, different models of machine learning.
Software engineer: computer – freely. Languages: C, C++, Java, Python, assemblers, Smalltalk, Prolog, Fortran, Pascal. Databases: SQL, MySQL, DBase, 1C. Low level coding: processors, compilers, supercomputer architectures. Internet programming - PHP, HTML. Neural networks.
Manager: team management, starting business from scratch, finance planning and control, factory management, advertisement & marketing, certification and licensing, R&D management, product management
Entrepreneur: product creation and development, business-plan, strategic marketing, fundraising, investors negotiations, deal structuring in several jurisdictions, team and company creation, working under tight schedule