If you're in your late 20s and coding is all you've ever done, be afraid. Domain knowledge is where it's at. I am in a similar situation to the OP having start

If you're in your late 20s and coding is all you've ever done, be afraid. Domain knowledge is where it's at. I am in a similar situation to the OP having started off with a ZX Spectrum, did CS, coded, but in my late 20s I was tempted into fixed income finance, and did that for 15 years at the highest level (unrelated to coding - I was a strategist and trader). Then in my late 30s I picked up Python, then R, and now know both really well (plus C and a bit of JS, Ocaml). What I find in my interactions is that the whizz-bang programmer guys, who are better than me at coding (though not by much - I picked up again pretty fast), are completely useless at mapping their skills to the finance domain, while my knowledge of both fields is where my value lies. I would strongly suggest to programmers that they ensure they know a non-CS domain too, preferably a niche one (we're such a big world now), and know it well - practise it as a primary activity for a few years. Climb the learning curve again even if it's hard at first. It is in the nexus between CS and other domains that opportunities are still plentiful.