Hello,
Yes, we can help you to rebuild your existing site in wordpress.
Kindly share your existing site URL & requirements in detail so that I can get a clear idea about the total scope of the job.
We have very good experience in website designing and development using Angular, React, Node, WordPress, PHP, Laravel, CodeIgniter, CakePHP, MySQL, Ajax, HTML5, CSS3, Bootstrap, jQuery, JavaScript, etc...
Let's discuss more details...
Regards
Sukanta