Early in his career, Sigman was a Research Intern for Paramount Pictures , a Research Analyst for Insight Film Studios, and a Systems Administrator for Rough Draft Studios.  In 2004, Sigman launched WeSolveProblems, an IT consulting, support, and security service for corporations, small businesses, and high-profile individuals. 
Sigman has built a number of blockchain projects.  White Rabbit is an ICO Discovery tool and tracking app.  Squirrel is a portfolio tracker for crypto assets with real-time price updates.