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ADP Software Engineer Interview Questions

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

BFS vs DFS TraversalEasy

Compare BFS and DFS graph traversal, including order, data structures, and when each is preferred.

RecursionQueueGraphs
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Sorting Algorithm Complexity Comparison
Easy

Explain and compare the time and space complexities of common sorting algorithms and when each is appropriate.

MathArraysSorting
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Clustered vs Non-Clustered IndexesMedium

Explain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.

JoinsData Wrangling
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Second Highest Trader Salary
Easy

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSorting
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Migrate Legacy to Microservices
Medium

Assesses experience and strategy for modernizing systems into microservices.

microservices
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Approach an Automated Retriever
Medium

Evaluates problem-solving approach and ability to plan an automation solution.

Problem SolvingAutomation
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Design a Hotel System
Hard

Tests system design skills for building a modular, end-to-end service.

system designProject Management
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Multistage Docker and Pipeline
Hard

Evaluates containerization and pipeline design with attention to best practices.

best practicesdocker
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