Algo Trading App for DayTrading

I am looking for help in developing an algorithmic trading app to support day trading of stocks on the Indian National Stock Exchange (NSE). Specifically, I want the app to enable users to easily integrate market data obtained from external sources. This includes providing users with full end-to-end functionality to bring in market data across different assets and execute trades. The app should be both intuitive and easy to use, allowing users to quickly get an understanding of the financial markets and the stock trading process. I'd like the app to have features such as automated trading signals generated from various algorithms, portfolio visualization tools, and the ability to backtest trading strategies. The app should have an attractive design, allowing it to stand out from the competition. At the same time, the app should have advanced features to satisfy the needs of more experienced traders. This includes the ability to execute highly complex trading strategies, access to real-time market data, support for paper-trading, and a range of analytical and visualization tools. Ideally, the app should also be integrated with other third-party services, such as charting services, custom market data feeds, and broker connectivity APIs. In short, I need help in developing an algorithmic trading app to