[badpun]

This really depends on your previous experience. If, for example, you have previous experience with C++ (which is what is often used in those hard niches), it would make sense to just apply to generic C++ roles, and work your way up to high salary by getting promotions or changing companies. If you're in the US, it probably wouldn't hurt to apply to FAANG-type companies, as they rely heavily on the leet code, so your lack of concrete experience in things they do will not be a big problem (likely will just get you a low pay grade, but you can change that with promotions later).