In this episode of Echo Verse AI Originals, we break down key backend engineering concepts essential for technical interviews. From database management systems (DBMS), SQL joins, and normalization to RESTful APIs, the CAP theorem, and microservices architecture, we cover the fundamentals that every backend developer should know. Learn about API security, scaling strategies, MVC architecture, and best coding practices like SOLID and DRY principles. Whether you're preparing for an interview or refining your backend expertise, this episode provides a structured guide to mastering backend development.