Build a distributed webhook delivery system with retry logic and dead-letter queues.
System DesignDistributed Systems
Python internals, including generators, async constructs, and iterators, were tested in the second coding round.
The System Design round required designing ChatGPT, with specific emphasis on GPU allocation, autoscaling under non-stationary traffic, and distributed coordination.
The Behavioral round prioritized technical leadership and architectural decision-making, requiring concrete examples of trade-offs rather than generic soft-skill responses.
Questions Asked
Implement a token-level streaming differ with state change tracking and rollback.
AlgorithmsData Structures
Design ChatGPT architecture.
System Design
Read the OpenAI charter thoroughly before the recruiter screen.
Practice iterative coding where a working solution is achieved before adding complexity.
Prepare for deep-dive code reviews where every implementation choice is scrutinized.
Focus on concrete technical trade-offs for behavioral questions rather than abstract leadership principles.