I value the high quality product/ code quality in our work, and I support the back end development in variety of languages such as Ruby, Python, Java, NodeJS and PHP. Specifically, Python and Java is our preferred back end languages, and I can work on any framework that is related to Ruby, Python, Java, NodeJS and PHP. I have good experience in the Devops work as well so that I can take full technical ownership for architect of back end infrastructure/network infrastructure and development, automatic deployment, testing via CI/CD. Mostly I use the Jenkins/GitLab/AWS or GCP as a preferred methodology for the back end development. But it is not limited to only that, and I can use others based on your demands.