NodeJS candidate required

Atleast 4+ years of experience in building backend systems preferably in
Javascript stack
● Strong proficiency with JavaScript
● Knowledge of Node.js and frameworks available for it
● Must have good understanding of Graphql
● Understanding the nature of asynchronous programming and its quirks andworkarounds
● Good understanding of server-side templating languages
● Good understanding of server-side CSS preprocessors
● Basic understanding of front-end technologies, such as HTML5, and CSS3
● Understanding accessibility and security compliance
● User authentication and authorization between multiple systems, servers, and
environments
● Integration of multiple data sources and databases into one system
● Understanding fundamental design principles behind a scalable application
● Understanding differences between multiple delivery platforms, such as mobile
vs. desktop, and optimizing output to match the specific platform
● Creating database schemas that represent and support business processes
● Implementing automated testing platforms and unit tests
● Proficient understanding of code versioning tools, such as Git

Only genuine bids , please do not bid if you are not serious about the project and not willing to work on contractual basis.
Thanks
have a good day!