Contact person: upgrade from Legacy ASP.NET Application to React.js (frontend SPA) and ASP.NET Core Web API (backend services).

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Location: Brighton and Hove, United Kingdom

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I have a working but aging ASP-NET CRM that now needs a full makeover. The goal is to lift everything onto a modern stack—React.js for a single-page front end and ASP.NET Core Web API with EF Core on the back.

What matters most to me is:
• a clean, responsive UI that feels equally natural on desktop and mobile
• solid, role-based security built with ASP.NET Core Identity and JWT tokens
• richer insight through new dashboards and exportable reports

The current pain point is the user interface design, so I want the new React SPA to be visually sharp, fast, and intuitive. All existing data and core workflows must remain intact, but the solution should be architected for easy future extensions.

I would like the first production-ready release in hand within a month. To make that realistic, please be comfortable owning the full flow: setting up the Web API, mapping the legacy schema to EF Core, wiring authentication/authorization, building the React UI, and packaging everything with clear deployment documentation and source control history.

Deliverables (each to be reviewed on GitHub before hand-off):
1. React.js SPA with responsive layout and polished UX
2. ASP.NET Core Web API + EF Core models, controllers, and migrations
3. Identity/JWT authentication and role management fully tested
4. Interactive dashboards and data export (CSV/PDF/Excel)
5. Optimised database schema scripts and migration guide
6. Read-me style documentation plus quick-start deploy instructions

If this timeline and scope suit your skills in React, ASP.NET Core, and SQL optimisation, let’s discuss the milestones and get started right away." (client-provided description)