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Dayforce Software Engineer Interview Questions

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

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1
CodingStart here. 23 questions · ~208 min
Palindrome and String ReversalEasy
Practice
Recently asked

Determine whether a string is a palindrome and return its reversed form using two-pointer string processing.

string manipulationDayforce
Palindrome Without LoopsEasy
Practice

Check whether a Dayforce employee identifier is a normalized palindrome using recursion and two pointers, without loops.

Dayforce
First Unique Character IndexEasy
Practice

Return the index of the first non-repeating character in a string using frequency counting in linear time.

Hash TablesArraysStringsDayforce
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2
SQL & Data Manipulation15 questions + 3 drills · ~166 min
Optimize a Slow SQL QueryHard
Recently asked

Tests your performance troubleshooting skills for SQL queries and databases.

Performance TuningDayforce
Normalization Impact on PerformanceMedium
Recently asked

Tests your understanding of schema design tradeoffs affecting query performance.

normalizationdata integrityDayforce
SQL Orders Count Per CustomerEasy
Practice
Practice drill

Count every Dayforce customer's orders, including customers with none, using a LEFT JOIN and GROUP BY.

aggregationGroup BysqlDayforceCATERPILLAR
SQL Query for Above-Average SalaryEasy
Practice
Practice drill

Use an aggregate subquery and LEFT JOIN to find Dayforce employees paid above the company-wide average salary.

aggregationsqlsalaryDayforceC5iAAdecco Italia
Top Users by EngagementMedium
Practice
Practice drill

Rank Dayforce users by quarterly engagement and return the top 10% using aggregation and NTILE().

sql queryEngagement MetricsDayforceLatticeCondé Nast
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3
System Design5 questions · ~45 min
React and Frontend ArchitectureMedium

Evaluates your knowledge of frontend architecture and component communication.

FrameworksDayforce
API Architecture on a WhiteboardHard

Evaluates system design thinking and tradeoffs in API architecture.

system designDayforce
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4
Behavioral & Leadership6 questions · ~54 min
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5
More topics1 question · ~9 min
Articulating JavaScript ClosuresHard

Evaluates your understanding of JavaScript fundamentals relevant to interactive UI work.

javascripttechnical conceptsDayforce
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.