Design a logging serviceSystem designIngest logs from every service at terabytes per day, make them searchable within seconds, and keep them cheaply for months.
Last asked Aug 2026
Baseten
A short recruiter call, a practical CoderPad screen, then a three-to-four-hour loop of deeper coding on concurrency, model-serving system design and a goals conversation that often includes a founder.
- One-pass S-expression parser with error reportingCodingWrite a parser for a small S-expression language that reads the input character by character in a single left-to-right pass; splitting the whole string up front is not allowed. It…Last asked Aug 2026
- XOR random number generator to encrypt and decrypt a treeCoding1. Implement a pseudo-random number generator whose state update uses bitwise XOR (shifts and XORs on an integer state), seeded so the same seed always gives the same sequence. 2…Last asked Aug 2026
- Batched LLM inference API over GPUsAI systemDesign an inference API that batches requests across GPUs efficiently. The discussion goes deep on a few axes: utilization, scaling under spikes, and separating prompt processing…Last asked Jul 2026
- Crash-safe on-disk key-value storeCodingBuild a filesystem-backed hash table that survives crashes and restores every entry from the latest state on restart. Reported on 1point3acres' Baseten bank; reconstructed in our…Last asked Jul 2026
- Run blocking API calls in parallel with a thread poolCodingA program makes many blocking API calls one after another. Make them run concurrently with a thread pool, collect the results in the right order, and handle calls that fail or…Last asked Jul 2026
- Design a pipeline that cleans pod alerts and finds bad podsSystem designAlerts about Kubernetes pods arrive messy: inconsistent formats, duplicates and noise. Design the data pipeline that ingests and cleans them and uses the result to flag pods that…Last asked May 2026
- Parallel chunked download with integrity checkCodingChange a sequential chunked file download to fetch chunks in parallel, then verify the reassembled file's integrity. Reported on 1point3acres' Baseten bank; reconstructed in our…Last asked Feb 2026
- Commit-to-production delivery pipelineSystem designDesign a CI/CD pipeline from commit to deployment covering source integration, builds, artifacts, quality gates, deployment and observability. Reported on 1point3acres' Baseten…
- Design an LLM inference serving platformAI systemDesign the system that serves several large models to many customers with low latency and high GPU utilization.
- Guided system design fundamentals roundSystem designAn interviewer-led system design exercise covering requirements, architecture, storage, caching, async work, reliability and observability for a supplied scenario. Reported on…