Working with genomics technology is too far away from the money to become rich from. There are too many middlemen in-between technology and application.
But it's a fun subject, and as the technology develops, middle layers will disappear and then the money from expertise will become better.
The number of people that are both capable software developers and has a good understanding of cellular biology are quite few and will probably remain so for the foreseeable future.
In biotech, the end goal is a physical product or a service performed by a doctor or another highly paid professional. Those don't scale as well as software. The ratio of users to developers is also low. You are likely developing software for many niche tasks, which does not scale either.
And if you are considering roles in the academia, your productivity is not going to be high enough to justify a competitive salary. Productivity, in monetary terms, is defined by the amount of money you can bring in. Either directly on indirectly. In the academia, that usually means grants. You may be able to argue successfully to a funding agency that one software engineer is worth two postdocs, but not four.
But it's a fun subject, and as the technology develops, middle layers will disappear and then the money from expertise will become better.
The number of people that are both capable software developers and has a good understanding of cellular biology are quite few and will probably remain so for the foreseeable future.