GIS Developer to Extend an Existing Mapping Platform and API

I have an existing geospatial platform hosted on DigitalOcean, using Docker, PostgreSQL/PostGIS, Directus, Australian road datasets and an existing API. I want to build on this infrastructure to develop my own geospatial API and an interactive map where I can explore my data, test API functionality and demonstrate the platform to potential business customers. The project includes: * Reviewing and improving the existing system and database. * Building my own API to provide access to available geospatial data. * Creating an interactive map to visualise data and inspect road features. * Providing a simple interface to test API requests and view results. * Assessing how routing and additional mapping services could be integrated. * Establishing a reliable process for updating datasets and archiving previous versions. The objective is to turn my existing infrastructure into a functional, demonstrable geospatial platform that I can develop further and eventually offer to other businesses. I want to reuse the existing infrastructure wherever practical rather than rebuild everything from scratch.