My web-and-desktop application is almost release-ready, but I still need an expert who can smooth out the last pieces of work on both ends of the stack. The frontend is built with React; the backend is written in Python and backed by a MSSQL database. Where you will start • Backend logic needs tightening: several endpoints still run slower than they should, and a couple of edge-case bugs appear under load. • Database optimisation is key: query profiling, index tuning, and light schema refactoring are expected so every call to MySQL returns snappily. • Integration and testing must be completed: I need end-to-end tests that cover critical user flows, plus automated regression tests to guard against future changes. What I’d like to see delivered 1. Refactored Python backend with measurable performance gains. 2. An optimised MSSQL schema and clearly commented migration script. 3. A fully wired React interface that talks cleanly to the updated API. 4. A suite of automated tests (unit + integration) that run green in CI. 5. Final build artefacts for both the web deployment and the desktop installer. I’m ready to give you access to the repo, staging server, and existing test plans the moment we start. If you’re comfortable jumping into a near-finished codebase and can prove you’ve squeezed the last bit of performance out of React, Python, and MSSQL before, let’s wrap this project up together.