Hi dear customer, do not waste time with autobidding freelancers who even haven't read your job title. I am not a Web PHP or mobile apps programmer. I'm a trader and solely trading software developer mostly for Tradingview. I have read your Specification and ready to develop you Tradingview Pine Script to detect bullish engulfing candle on lower bollinger band. Need more details to estimate fair price and deadline. Please pay attention that I have 100% completion and will deliver you clear professional, reliable, structured and well commented easy to read source code with life-time support. Visit my profile and make sure I'm a right person who will carry out your project perfect and in time. I have more than 16 years experience in trading, coding and automation, developed and converted hundreds of different EAs and indicators. Chat with me and I will answer all your questions. Do not hesitate.