Hi everyone,

I have an upcoming system design interview with Grab for a Senior Fullstack Engineer role next week. Here’s what the recruiter told me:

Preparation Tips:

Frontend Skills: Practice classic exercises and fundamentals (e.g., JavaScript).

System Design Principles: Understand scalability, performance, reliability, maintainability, and extensibility.

Coding & Testing: Regularly solve coding problems and write tests.

Analytical Skills: Clarify requirements, handle ambiguity, transform into well-defined solutions.

Infrastructure Knowledge:

Mobile: deployment pipelines, OS, networking, cloud, analytics.

Backend: deployment pipelines, OS, networking, cloud services (AWS, Azure).

Communication: Explain your thought process and design clearly.

Monitoring: Know best practices for system monitoring.

• They want me to cover almost everything—from frontend to backend to infrastructure.

• I should prepare for both HLD and LLD.

I’m a bit confused about a few things:

1. In a 1-hour system design interview, will they expect both HLD and LLD? If so, is it actually possible to complete both in that time?
2. What is the bar for passing the system design interview? Do I need to perform perfectly (10/10) to clear it?

Any insights, tips, or experiences from people who’ve interviewed at Grab would be really appreciated.

Thanks in advance!