Low-Level Design (LLD) in Java — Interview Cohort with Rahul Kumar

A practical, interview-focused cohort designed to help software engineers learn Low-Level Design (LLD) using Java.

This cohort focuses on how to think during LLD interviews, not on memorizing solutions.

We’ll cover:

• OOP fundamentals required for LLD

• SOLID principles

• UML and class relationships

• Interfaces, abstractions and extensibility

• Common design patterns

• Requirement clarification

• Class and object modeling

• Clean Java design

• Design trade-offs

• Interview communication strategy

• Real LLD problems solved live

By the end of the cohort, you should be able to take an unfamiliar LLD problem, break it down systematically, design a clean solution, and explain your decisions confidently in interviews.

Best suited for SDE, SDE2, SDE3, Java Developers, Backend Engineers, and Software Engineers preparing for product-company interviews.