Quantitative Finance is the field I’ve worked on for the last six years on a day-to-day basis, before changing towards IT. If you understand what I mean when I speak of $\mathbb{Q}$ versus $\mathbb{P}$, convexity adjustments, local volatility and martingales, you’re probably working on similar topics as I did. On this website, I wrote posts about quantitative finance that you can find under the tag “quantfinance” in the tags page.