Jere Salmisto is the founder of CalcFi, a free personal-finance calculator platform where every formula traces to a primary public source — IRS publications, Federal Reserve series, Treasury tables, Bureau of Labor Statistics, CFPB and HUD. He also runs Autonomatica, a studio building quantitative-automation systems, backtesting pipelines and rule-based decision tools. Before CalcFi he was CEO at Topair Nordic (industrial sales and operations) and led B2B commercial execution across multiple companies. That operator background shapes how he writes about finance: numbers must reproduce by hand, sources are cited on the page, and tools are free forever. Available for commentary on consumer finance, paycheck/tax/mortgage math, retirement planning, systematic trading logic, finance-tool us...