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Updated weekly · Last refresh Oct 17

Eliassen Group Software Engineer Interview Questions

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

37questions
~6htotal time
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1
CodingStart here. 9 questions · ~82 min
Linked List ReversalEasy
Practice

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

RecursionLinked ListsArraysEliassen Group
Processes vs Threads DifferencesEasy

Explain how processes and threads differ in memory, isolation, communication, and scheduling trade-offs.

Eliassen Group
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2
Execution9 questions · ~82 min
Design External Partner API ApproachMedium

Explain how you would design an external partner API while balancing usability, security, reliability, and long-term maintainability.

Launch PlanningTrade-offsScope ManagementEliassen Group
Escalate and Contain Critical BugEasy

Describe how you handled a critical bug by assessing risk, aligning stakeholders, defining severity, and driving containment to resolution.

Success CriteriaRisk AssessmentQualityEliassen Group
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3
System Design6 questions · ~55 min
Integrating Legacy with Modern C++Medium

Assesses your approach to risk, compatibility, and architecture when bridging legacy and modern codebases.

legacy systemsc++integrationEliassen Group
Distributed Networking and SyncHard

Evaluates your approach to concurrency control and correctness in distributed networking systems.

Networkingdistributed systemsarchitectureEliassen Group
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4
Behavioral & Leadership11 questions · ~100 min
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5
More topics2 questions · ~18 min
Diagnosing Memory LeaksHard

Tests your approach to identifying and resolving memory leaks in production software.

memory leakDebuggingEliassen Group
Optimize Slow SQL QueriesMedium

Tests your SQL performance tuning approach and ability to reason about query plans and indexing.

SubqueriesJoinsAggregationsEliassen Group
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Optimizing Slow SQL QueriesMedium
Practice
Practice drill

Optimize a customer order aggregation query while preserving date, status, join, and spending filters.

Window Functionsdatabase optimizationJoinsLam ResearchPublicis SapientAtlanticus Services
SQL Window Functions for Rolling MetricsHard
Practice
Practice drill

Calculate each user's 7-day activity average and rank users within their cohort using PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationTredenceEchostarEliassen Group
Detect Consecutive Losing StreaksMedium
Practice
Practice drill

Identify bet365 users with consecutive losing bets above a risk threshold using ordered streak grouping.

abuse trackingData Manipulationsql querybet365
The finish line: interview-readyComplete all 37 questions plus 3 hands-on drills to finish this plan.