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Prep plan
Updated weekly · Last refresh Oct 17

a Day & Zimmermann Software Engineer Interview Questions

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

28questions
~4htotal time
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1
CodingStart here. 9 questions · ~85 min
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysa Day & Zimmermann
Big O Notation ExamplesMedium
Practice

Define Big O notation and classify common examples like O(1), O(n), O(n^2), and O(log n).

CodingMathArraysa Day & Zimmermann
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2
Execution3 questions · ~28 min
Adapting to Changing RequirementsEasy

Describe how you adapted when project requirements or the expected format changed midstream.

Trade-offsRisk AssessmentScope Managementa Day & Zimmermann
From Concept to DeliveryMedium

Tests end-to-end execution, prioritization, and delivery discipline in real software work.

Launch PlanningSuccess CriteriaRoadmappinga Day & Zimmermann
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3
System Design3 questions · ~28 min
Design for Millions of RequestsHard

Tests scalability, architecture choices, and reliability planning under high traffic.

InfrastructureFeature StoreModel Servinga Day & Zimmermann
System Design Tools and FrameworksEasy

Tests your practical approach to designing systems and your ability to justify tooling choices.

InfrastructureToolsData Modelinga Day & Zimmermann
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4
Behavioral & Leadership11 questions · ~104 min
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5
More topics2 questions · ~19 min
Salesforce Apex, LWC, SOQLMedium

Assesses your ability to build and query Salesforce features using Apex, LWC, and SOQL.

salesforcea Day & Zimmermann
Database Design ApproachMedium

Tests your ability to design reliable, scalable database schemas for engineering and operations workloads.

JoinsData WranglingAggregationsa Day & Zimmermann
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.