My way to the Quantitative investment strategies

I have been trading in the stock market for 19 years and have been after a reliable way to earn profit. In the last few years, I found the terminology 'quantitative trading', which is very useful for me. My current career, software engineer, is a advantage for me, so that I can code myself to obtain data from various sources, finding patterns on the data, back testing my trading strategy, adjusting parameters for optimisation, applying strategies to real world and it is fantastic! I have been using ninjaTrader,VBA, python, so far I find python is the most efficient approach for me with its convenience and flexibility.