The company's development work uses such technologies and programming languages: Ruby, Go, Node.js, Vue.js, React.js, PostgreSQL, PHP. These tools are selected for maximum integration and compatibility with other services. To implement projects that have a distributed architecture, the golang programming language is used. To create applications for iOS and Android, Objective-C and Kotlin are used. "Key Group bel" team adheres to Kanban methodology. Thus, the entire development process is divided into tasks that are necessary in a short period of time.