Swizec Teller is a Slovenian software engineer (formerly at Tia and Heroku) and one of the longer-running independent voices on the React and serverless ecosystem. He is the author of Serverless Handbook for Frontend Engineers and React + D3v4, and runs the popular swizec.com blog.
His CourseFlix listing carries the Serverless Handbook for Frontend Engineers — a comprehensive treatment of serverless architecture aimed specifically at front-end developers extending into the back-end. The book / course covers AWS Lambda, the API-Gateway and DynamoDB stack, the deployment patterns, and the architectural decisions for serverless applications.
Material is paid and aimed at front-end developers picking up serverless back-end work. For broader content, see CourseFlix's System Design & Architecture category page.