Proficiency in databases knowledge of database management systems (DBMS) such as MySQL, MongoDB, PostgreSQL, and Microsoft SQL Server, including data modeling, schema design, and query optimization. Also possess skills in database programming languages such as SQL.

Proficiency in development frameworks in-depth knowledge of specific frameworks such as React, Angular, or Vue.js for front-end development, and Django, Ruby on Rails, or Laravel for back-end development. Also possess skills in framework-specific tools, libraries and APIs.

Proficiency in version control systems, knowledge of systems such as Git, SVN, and Mercurial, including repository creation, branching, merging, and conflict resolution. Also possess skills in using version control tools, such as Git Bash, GitKraken, or Sourcetree, to manage code changes and collaborate with team members.