Custom Web Application Development -- 2

I need a full-featured web application built from the ground up. The core idea and business logic are already defined; what I now require is the technical expertise to translate that concept into a secure, scalable, and user-friendly online product. Scope The job covers everything from setting up the project repository through to deployment on a live server. I’m open to whichever modern front-end or back-end stack you feel best suits the use case—React.js, Angular, Vue.js, or a comparable alternative—as long as performance, maintainability, and industry-standard security practices remain at the forefront. Deliverables • Clean, well-documented source code in a public or private Git repo • Responsive UI that works smoothly across major browsers and devices • RESTful (or GraphQL) API layer, fully documented • Basic unit/integration tests and one-click deployment script • A concise hand-off guide so future maintenance is straightforward Acceptance criteria • All primary user flows complete without errors • No critical or high-severity security vulnerabilities in final audit • Page-load time under three seconds on a standard broadband connection If you see a more efficient way to meet these objectives, please outline it in your proposal alongside an estimated timeline and milestone plan so we can align expectations before we begin.