Data-driven marketing (DDM) is a huge thing now because it reliably magnifies revenue streams. However, the skill set to execute on such strategies is a bit non-traditional for marketing. If you want to hire someone to help build your DDM team, you don't necessarily want a business grad or a top salesman. What you want is an math or engineering transplant, someone with the statistical and technical skills necessary but who knows or is interested in learning the business and marketing aspects.
"Growth hacker" moonlights as a buzzword, but it's actually a great way to spin a job opening to appeal to the audience you need to attract: tech-to-business transplants. Ergo, it can also be effective self-branding if you're a tech-to-business transplant looking to make $$$ for helping to create well-documented X% to XX% revenue improvements.