Ask HN: How do you handle tech debt in startups?

I often see tech debt as a common problem in early stage startups. Startups ship fast for good reason, with velocity as a higher priority than stability. This shows up later with frequent crashes, slower development speeds, frustrated senior engineers who join later, lower retention rates.

I also feel that the problem can be somewhat mitigated by some simple strategies and probably just one person as a focussed resource for this.

Has anyone come across a tech consultant specialising in just startup SRE? Not suggesting that tech debt is an easy problem or can be completely solved. Wondering if there's a more generally available solution.