Mostly used with Django to build backend servers and API's it helps with fast prototyping. We relied on it to build the What's Cookin backend. It pairs beautifully with Docker to deploy on the AWS cloud.
Although very new to the world of hybrid mobile apps flutter might well be my favorite library; It's helping us at What's Cookin' develop a great cross platform application. Flutter contains a very well build library of components (AKA Widgets) and guides and documentation to build awesome IOS/Android apps. One of my latest accomplishments was building the Google oauth social login integration at What's Cookin'.
Throughout my experience I learned to use all sort of resilient data management solution starting with MongoDB to MySQL then to PostgreSQL and back to NoSQL with DynamoDB. I also worked with data stores for web and mobile like local storage and cookies. For performance and high efficiency purposes, I also learned the basics of how to add Redis caching and CDN's to an app.
To be more effective as a software engineer I learned how to use Figma for prototyping and wireframing, using Google Analytics, how to deploy serverless applications with firebase. AWS services such as CodeCommit, Elastic Beanstalk, Lambda, RDS, S3, IAM, and API Gateway.