Mock interview (System Design - LLD/HLD)

Anant Singh Raghuvanshi

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Mock interview (System Design - LLD/HLD)
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₹449
60 mins

System Design Mock Interview: LLD & HLD

Prepare for your next System Design interview with a realistic, interviewer-led mock session covering Low-Level Design (LLD) and High-Level Design (HLD).

This service is designed to simulate an actual technical interview—not just a discussion or tutorial. I’ll evaluate how you approach ambiguous requirements, make design decisions, communicate trade-offs, and defend your solution under interview-style questioning.

What the session includes

HLD — High-Level Design

  • Requirement gathering and clarification
  • Functional & non-functional requirements
  • Capacity estimation and scalability
  • API and service design
  • Database selection and data modeling
  • Caching, messaging, queues, and event-driven architecture
  • Load balancing and horizontal scaling
  • Reliability, fault tolerance, and availability
  • Microservices architecture
  • Bottleneck identification and trade-offs

LLD — Low-Level Design

  • Requirement analysis
  • Class and object modeling
  • SOLID principles
  • Design patterns
  • Interfaces and abstractions
  • UML/class diagrams
  • Extensibility and maintainability
  • Concurrency considerations where relevant
  • Code-level design discussions

What makes this different

The session follows an actual interview format. You will be expected to drive the discussion, ask the right questions, explain your decisions, and respond to follow-up questions.

I’ll intentionally challenge your design with questions such as:

  • "What happens if this component goes down?"
  • "How would you scale this to 10x the traffic?"
  • "Why did you choose this database?"
  • "What is the bottleneck in your design?"
  • "Can we make this more extensible?"
  • "What trade-off are you making here?"

After the interview

You’ll receive structured feedback covering:

  • Problem-solving approach
  • HLD/LLD fundamentals
  • Architecture and design decisions
  • Scalability & reliability
  • Code/design quality
  • Communication and interview performance
  • Areas that need improvement
  • What you should focus on before your actual interview

You can choose HLD, LLD, or a combined System Design mock interview depending on your preparation needs.

Ideal for: Software Engineers preparing for SDE/Senior SDE interviews, especially candidates targeting product companies and backend/microservices-oriented roles.

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