Ask HN: How to get a SW developer job at trading firm

Hi everyone, I am currently a C++ developer specialized in driver development. I am living in Canada. I am looking to find a developer job writing trading software, preferably in Canada. In terms of technical skills, I am comfortable with low level programming/debugging and I can program in modern C++ too. I have grinded leetcode before graduated from uni and I have got back to the grinding recently.

So...what should I start/stop doing now? I give myself about 4-6 months to achieve this goal. I would like to hear your suggestions/opinions.