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Prep plan
Updated weekly · Last refresh Oct 18

Ookla Software Engineer Interview Questions

The questions to prepare for a Ookla Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 9 questions · ~91 min
Merge Two Sorted ArraysEasy
Practice

Merge two sorted arrays into one sorted array using a two-pointer linear scan.

ArraysSortingTwo PointersOokla
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysOokla
Stack vs Queue DifferencesEasy

Compare stack and queue behavior, access order, operations, and common use cases in linear data structures.

StackQueueArraysOokla
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2
Execution18 questions · ~182 min
Prioritize Multiple Urgent IssuesEasy

Explain how you would prioritize competing urgent issues while balancing delivery risk, stakeholder expectations, and near-term commitments.

Trade-offsRisk AssessmentScope ManagementOokla
Learning New Tech Under DeadlineEasy

Describe how you learned an unfamiliar technology quickly enough to deliver a high-stakes engineering project without missing the deadline.

Launch PlanningRisk AssessmentScope ManagementOokla
Prioritize Conflicting Engineering DeadlinesMedium

Explain how you would prioritize competing engineering deadlines when stakeholders, business impact, and delivery risk are all in tension.

Trade-offsRoadmappingRisk AssessmentOokla
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3
More topics4 questions · ~40 min
SQL Query OptimizationMedium
Practice

Optimize a slow PostgreSQL query that aggregates completed transactions while preserving customers with no matching activity.

Performance Tuningdatabase optimizationindexesOokla
Purpose of Database IndexingEasy

Tests understanding of indexing tradeoffs and how it impacts query performance and write overhead.

JoinsData WranglingAggregationsOokla
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 31 questions plus 2 hands-on drills to finish this plan.