Katkat

Company

Cockroach Labs interview questions

2 practice questions in the style of Cockroach Labs's interviews, covering Coding & Algorithms, System Design.

Questions2

0 easy2 medium0 hard

Your progress0/2

Cockroach Labs interview questions by the numbers

Last updated

Katkat has 2 Cockroach Labs interview questions. The largest topics are Coding & Algorithms (50%) and System Design (50%). By difficulty: 100% medium. The most common round is Onsite (100%).

Topics

Difficulty

  • Medium100% · 2

Interview rounds

  • Onsite100% · 2

Roles

  • Software Engineer100% · 2

Showing 1–2 of 2 results

  • Point-in-Time Reads from a Timestamped Key-Value StoreMedium

    Build a versioned key-value store whose reads return the value a key held at a given timestamp: the latest write at or before that time, or an empty string if there is none. Tests choosing a per-key data layout that keeps point-in-time lookups fast across up to 200,000 operations.

    Cockroach LabsSoftware EngineerCoding & AlgorithmsOnsite
  • Present and Defend an End-to-End Project You Owned: Architecture, Choices, ChallengesMedium

    A choose-your-own system design round: present a core project you owned end to end at a previous job, then defend its architecture, technology choices and hardest challenges under detailed probing. Tests depth of ownership, trade-off reasoning and the ability to move from a diagram to concrete mechanisms.

    Cockroach LabsSoftware EngineerSystem DesignOnsite

Cockroach Labs interview experiences

All 1 →
  • Time Based Key-Value Store and a Choose-Your-Own System DesignCockroach Labs · Software Engineer · Onsite · Jul 2026

    LeetCode 981: Time Based Key-Value Store Design a timestamp-based key-value store data structure that supports set(key, value, timestamp) and get(key, timestamp). It tests whether you can bring down the time complexity of get by optimizing the data structure. The recommended direction is a hash table combined with arrays (e.g. unordered_map >>), using binary search…

More companies