I helped the client clean up the old code that was done poorly by another team as an MVP, mainly in custom copy & pasted HTML/CSS. I transformed it into a well-defined TailwindCSS implementation with a color scheme defined according to Next.js best practices. I then handed over to the new full-time front-end developer before I left the project.
I refactored, cleaned, optimized Next.js front-end connected to a Python API pulling dozens of financing data and I handed over to a new full-time developer.