Thanks for the advice - are there certain topics I can learn about or some way you think I can work on making my resume stand out in any way after acquiring those skills?
Nowadays RL and Gaussian processes are very popular on the trading side, as is applying attention-based NLP techniques for pattern recognition. If you are interested in stochastic calculus and convex strategies, John Hull's "Options, Futures and Other Derivatives" is a classic read. Another good book is Marcos Lopez de Prado's "Advances in Financial Machine Learning."