• 10 year options market maker
• 4 years professor of financial derivatives
• 10 years trading, position, and risk management systems for global asset managers, hedge funds, and investment bankers
• 5 years structured finance intangible assets
• 5 years transformation of healthcare financial operations to intangible assets
• 2 years data, analysis, and reporting requirements for patients with chronic conditions

Mathematica has been one of a few consistent threads across the years.