How to pass the Nscale interview, the UK AI neocloud
8 min read The Nscale interview: how the GPU-infra engineering loop is structured, what each round screens for, and how to prepare for it. Read article
Interview Prep
Interview Prep
How to pass the Emerald AI interview, the grid-power startup
9 min read What Emerald AI screens for across its engineering rounds, how the loop is structured, and how to prepare for the grid-plus-compute questions. Read article
Interview Prep
Fluidstack Interview Guide 2026 for GPU Neocloud Engineers
8 min read What Fluidstack’s engineering interview loop looks like in 2026, the systems questions they ask, and how to read the comp ranges. Read article
System Design
Kafka interview questions that separate users from operators
9 min read A walkthrough of the Kafka questions interviewers actually ask, covering partitions, consumer groups, rebalancing, and delivery guarantees. Read article
System Design
Why adding a cache node shouldn’t move every key
7 min read The math behind hash rings, why virtual nodes exist, and what a designer probes the moment you reach for consistent hashing. Read article
System Design
What interviewers want when they say design a rate limiter
7 min read A walkthrough of the rate limiter system design question, from scoping the limit to the distributed counter problem that trips most candidates up. Read article
System Design
Design a message queue without hand-waving the hard parts
7 min read A walkthrough of the delivery, ordering, and durability decisions a message-queue design round actually grades. Read article
System Design
How to design a web crawler that stays polite at a billion pages
7 min read A walkthrough of the web crawler design question, from the URL frontier and politeness to deduplication and the follow-ups that trip candidates up. Read article
System Design
Designing WhatsApp from the connection layer up
7 min read The back-of-envelope math, connection routing, and store-and-forward tricks behind moving a few hundred bytes to the right phone among two billion. Read article
System Design
How to design a URL shortener that survives real traffic
6 min read The design choices behind a URL shortener that interviewers actually probe, from short-code generation to caching and the 301-versus-302 redirect. Read article
Company Guides
What the Databricks engineering interview actually tests
6 min read A breakdown of the Databricks engineering loop, from the CodeSignal screen through the concurrency round to the distributed-systems design most candidates underprepare for. Read article
System Design
How to design a chat system that won’t lose or reorder messages
7 min read A chat system design interview is really about delivery guarantees, message ordering, and presence, not the boxes on the whiteboard. Read article
System Design
The system design terms interviewers expect you to define
9 min read Plain definitions for the system design vocabulary that shows up in interviews, from p99 and quorum to backpressure and idempotency. Read article
System Design
How rate limiters actually work when you have more than one server
8 min read A single-server rate limiter is a hash map and a timer; the real interview starts when you add a second server and need one shared, race-free counter. Read article
Interview Prep
What the Materialize engineering interview actually tests
6 min read How Materialize runs its engineering loop, and the streaming-systems and correctness questions to prepare for. Read article
