Development of webfiller interface in Javascript (browser add-on)

This is a project for experienced and professional Javascript developers. Please only apply if you have the appropriate experience and references! We need a powerful and optimized add-on for Firefox in Javascript, which is able to fill in and communicate with all conceivable constellations of web forms with access data from our Windows application. The script must be able to handle complex forms created with jQuery, ASP.NET and other modern frameworks and fill them out correctly. When the browser is on a website, the addon checks if the URL is in our database. It will then receive the access data and must fill out the form correctly. It must be able to recognize whether the user has filled out a new login with login data and send them to our application. It must recognize whether the user is already logged on and prevent new login attempts in this case. It must be able to fill in logins that span multiple pages (such as Google-Mail Login, Amazon or eBay). It must be able to detect non standard forms posting events and send corresponding data to the main application Then we need to add a request for web forms submission, that is the new. It must be possible to define special cases in a separate configuration file, for logins that require special handling