Improve Your Trading is run by Mark O’Sullivan in sunny California. Mark is a self-starter, who has been in software engineering for over 20 years. Mark learned to code on his own through passion and perseverance, and he created Vanilla, an open-source discussion forum platform that has empowered millions of discussions across the internet. After Vanilla, Mark moved to the bay area and spent the next decade at Twitter & Adobe, where he rapidly moved up the ranks from software engineer to engineering leadership – ultimately managing multiple teams and managers at Adobe.

In 2021 Mark left software engineering leadership to get back to his startup & software development roots in pursuit of his passion in stock market trading. Since making the switch, Mark has spent years trading and writing software to help improve his trading. Now a consistently profitable trader, Mark hopes to help aspiring traders improve their trading by sharing his tools, practices & experience.