Hi, I have read your requirement and I find it interesting.
I am a Full Stack Developer with 15 years of experience, I have given support and maintenance to applications, I have created new applications.
I have experience in financial systems and stored procedures (automation and enhancements), I have experience in migrating code to .net.
I have knowledge in: C#, Php, Asp.net, SQL, MVC, visual basic, and more.
We must chat to know the details of the project.