We have widely worked on Node.Js for past 1.5 year, we worked on building Serverless(AWS Lambda) architecture and complete backend for a mobile application, we worked on MongoDB mostly and other SQL database including Postgres also. In AWS, we have used S3 for file uploading direct from mobile application with signed url authentication and SNS and SES service for SMS and Email, API Gateway for HTTP endpoints and lastly we migrated complete Backend code to widely used framework Serverless, For documenting our code, first we used Postman then swagger also. When we shifted to Serverless, we also use markdown, and without git we don't start any project.
And Sorry for your requirement for sending links, those all are big and private projects , we cant share links