LeetCode

Prepare for an intensive API design interview centered on LeetCode, crafted to simulate the rigor of FAANG+ technical assessments. Over 40–45 minutes, you’ll explore all critical aspects of API architecture, from functional and non-functional requirements to integration and performance optimization. The focus will be on designing a hybrid API using REST and GraphQL, challenging you to demonstrate both technical expertise and structured problem-solving.

This interview emphasizes your reasoning and decision-making, not just answers. Expect a mix of straightforward, creative, and follow-up questions, and use text and diagrams to visualize and communicate your solutions clearly.

What You’ll Practice:

• Evaluating API architectural styles and selecting between REST, gRPC, or GraphQL.
• Justifying functional and non-functional requirements while decomposing complex systems into manageable services.
• Designing endpoints, data formats, and strategies to ensure performance, scalability, and security.
• Illustrating solutions with diagrams to clearly communicate your designs.
• Applying advanced techniques like API versioning, caching, rate limiting, and monitoring for robust, maintainable APIs.

By the end, you’ll be equipped to design scalable, efficient APIs, articulate and defend your choices, and confidently tackle high-stakes API design interviews.