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It's one of the few books (perhaps the only one I've found) that approaches this subject matter from the perspective of an engineer wanting to architect their own system from the ground up, and potentially work for themselves or in a firm. But, going in, you should know that it focusses less on trading techniques and more on software architecture. What data structures you might use, and one potential approach that's laid out in the book.
Whilst some areas in the book are light (for example, the performance section), I'd recommend it if you're interested in ground-up building a trading system. If you work in the space already, you'll know the parts that are misaligned with majority of systems out there (choice of language being one). If you don't, and are looking to enter the space, it'll increase familiarity with core concepts (for instance, before I read this book, I had no distinction between "model" and "algo").
It's also refreshing that it stands out from the pack of books that aim to make you zillions of dollars just by using "these 10 key trading secrets!".
[0]: https://www.amazon.com/Professional-Automated-Trading-Theory...
