We are a team of designers and developers with expertise and experience in Photoshop, HTML, CSS, PHP, AJAX, JQuery, Angular JS, XML, Wordpress, Bootstrap, CodeIgniter, Laravel, Google Map API and MySql.
We have designed and coded many custom sites and applications of varied extents and complexity. We have integrated Stripe.
I have studied your requirement - I am not sure of what you mean by "but it olny preauthorizes a card and does not charge the card until the project ends" - please share your site url and explain in its context.
Once I am able to assess scope of work precisely. I will revise / confirm my bid accordingly. Detailed specifications and inputs will also help me to make an informed commitment and deliver as required.
I ensure a very thorough job and also support if you need changes / enhancements in future. I look forward to hearing from you and working on the project.