Am NodeJS Developer, with 6 years experience,
I am the best fit, for your website... Because i have worked with Popular Backend framework e.g KeystoneJs, Hapi and ExpressJS......
Outside website maintenace.. i have created powerful C++ NodeJS Native Addons e.g Face Detection Modules(OpenCV).. I know in some time your website might add a functionality, that might need me creating custom node packages...
I have strong understand of MVC architecture, And am knowledgeable of sequelize ORM module....