Yes there is some overlap, for instance the conference Unconventional Computation and Natural Computation (UCNC) covers theoretical computer science topics related to biological computation.
From the call for papers, UCNC topics of interest include (but are not restricted to):
Grzegorz Rozenberg worked a lot on the way in which ciliates assemble their genes. Besides the theoretical models derived from these operations, I believe he thinks that this assembly is a computational process as it is.
I'm assuming that you're really asking, "how do I do something useful with modelling and theory."
The easiest answer is to work in a modelling and simulation field that makes useful products. Computational Electromagnetics is used a lot in RF, Finite Element Analysis is used in mechanical product design.
The broken part of your reasoning is that "more ...