Here is template for thinking process in SDE Interview at big tech.

1. System Design

• Find the bottlenecks downtime of each node in design.
• Dive deep into each components: API Design, Database.
• Analyze pros, cons and trade-offs in 2 approaches ⇒ Make decisions based on requirements.

2. Coding Interview

• Understand the problem.
• Understand the constraints and worst cases.
• Give examples
• Go with brute force solution, find and optimal to 2 - 3 solutions.
• Run with testcases

3. Computer Science

• What is it ?
• Details
• When to use it in practice ?

4. Lead with questions

• Because everyone want to SELF-MAKE DECISION BY THEMSELVES.