Mastery in HTML/CSS/JScript and at least one front-end framework Mastery in at least one backend programming language (JavaScript, C#, GoLang, Python, etc.) and framework Mastery in application design (APIs, Integrations, Messaging, Streams, Queues, REST, GraphQL, MVC, Websockets, etc.) Mastery in manipulating data formats and experience with various data technologies Mastery in at least one cloud platform (AWS, GCP, Azure, etc.) and cloud architecture Mastery in common security concepts and protection techniques Mastery in git and DevOps technologies like IaC (CloudFormation, CDK, Terraform, Kubernetes) Mastery in observability areas and technologies (monitoring, logging, alerts, distributed tracing)