As a seasoned Python developer and a full-stack blockchain expert with years of experience, I'm confident in my ability to not only debug the issues present in your Binance trading code, but also optimize its overall performance to deliver you a robust solution. My knowledge of the Binance-python library paired with an excellent understanding of trading platforms make me an ideal candidate for your project.
Having worked extensively on various dApps like Yield Farming, Staking, etc., I have acquired unrivaled debugging skills over the years. I am confident that I can efficiently identify and rectify the 'notional size' related challenges and any other errors persisting in your current codebase. Furthermore, acompaning my technical expertise is an unyielding dedication to communication and punctuality — you can expect regular updates, swift replies, budget adherence, and timely deliveries.
Considering my track record for delivering job satisfaction and my commitment to providing a seamless customer experience, it's safe to say working with me would rejuvenate your trading endeavors on Binance platform. Let's get started on de-bugging and bringing about unequivocal success!