Hi vinhempich,
I have read your project description that you want to install and fix laravel web and its flutter app, I Will do this task with all my expertise because I am web app developer/designer, please share more details related to your project so that will help me to work on it.
As you mention, you also want to change payment gateway and OTP authentication method for this please provide required APIs for changing the payment gateway.
Please let me have access of your web app so that I will work on that.
Let's get connected on chat for more discussion.
I have Over 8+ Years of experience in developing web applications using technologies like PHP, HTML, AJAX and JavaScript in diverse domains like Finance, Health, Ecommerce, Telecom, Education etc.
Dexterity with both LAMP (Linux, Apache, MySQL, PHP) and WAMP (Windows) stacks.
Developed applications using HTML4/5, CSS2/3, Bootstrap, JavaScript, JQuery, Angular JS, and AJAX, YUI, and PHP, with strict W3C standards.
Developed PHP based server API’s using Zend2, Cake, Laravel, YII, Symphony framework and MVC architecture.
Proficient in using LAMP Apache Web Server, MySQL, APIs, SOAP and Restful Web Services.
Expert in UNIX, Linux shell scripting & hands-on expertise in networking, scripting, and systems integration.
Worked on database like My SQL, SQL Server, and PostgreSQL.
Please check work and portfolio:
https://www.freelancer.com/u/pinesucceed01
Thanks