The successful developer should focus on simplicity and keeping pages fast and light to load.
The whole map project will be maintained by non-technical staff (but html/database capable). Since there will be frequent changing of links, enlivening parts of the page, removing images the final code should be designed so that these components can easily be added, removed and updated.
We are open to recommendations on platform and language for this project. The final implementation will need to be successfully uploaded and working on our test servers.