Comment by GianFabien

The "something" needs to become more specific, far more specific. Do you have strong domain expertise in HR? If not, you could use your consulting client base as a starting point.

You mention you might use it internally for recruitment. That's a great starting point. Find one pain point (your itch) fix it with your tech. Then pick the next pain point, repeat.

In parallel your marketing effort should be identifying potential clients who are most likely to have the same pain points as you. Since you are dog-fooding your product, you can easily demonstrate how your product solves that particular problem. Again, repeat.