Chrome extension

Would like to hire someone to build a Chrome Extension/Plug in. This is for a money saving app.
MUST have proven experience and portfolio.
Must be built to the latest Google Extension/Plug in standards.
Will be integrated into our existing money saving website.

The fee is just for the build. Will be an on-going fee for updates and improvements later down the line.

Person doing this must speak good ---------- ance of on-going monthly work if this first project goes to plan.