What should backend developer know?

A backend developer should have knowledge of server-side programming languages (such as Python, Ruby, Java, C#, or JavaScript), database management systems (such as MySQL, MongoDB, or Oracle), and web application frameworks (such as Express.js or Ruby on Rails). They should also have a good understanding of server-side logic, APIs, and data storage solutions. Additionally, experience with version control systems (such as Git) and cloud infrastructure (such as AWS or Azure) is also beneficial. Familiarity with security best practices and experience with performance optimization are also important skills for a backend developer to have.

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