Back end Developer(Node js)

Strong proficiency with JavaScript
Knowledge ofNode.jsand any of its frameworks (e.g. Express, MEAN, Loopback)
Understanding the nature of asynchronous programming and its quirks and workarounds
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
Proficient understanding of code versioning tools, such as Git