Dataford
Dataford
Top 50
Prep plan
Updated weekly · Last refresh Oct 17

Amazon Web Services Software Engineer Interview Questions

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

50questions
~10htotal time
Track your progressSign up free to work through all 50 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 14 questions · ~174 min
Valid Parenthesis StringMedium
Practice

Check whether a string with '(', ')' and '*' can form a valid parenthesis sequence.

coding challengeBasic AlgorithmsAlgorithmsAmazon Web Services
Find Most Common Array ElementEasy
Practice
Recently asked

Use frequency counting to return the most common array element, breaking ties by earliest first occurrence.

ArraysArray ManipulationAlgorithmsAmazon Web Services
More Coding questions with a free account
2
System Design13 questions · ~161 min
EC2 Instance Retrieval SystemHard

Design a low-latency, memory-efficient system to retrieve available EC2 instances from a large pool.

latencycloud architecturedistributed systemsAmazon Web Services
Scheduler API DesignHard

Design a Scheduler API that creates timers and reliably fires callbacks at scale with low latency.

latencydistributed systemsAPI interactionAmazon Web Services
More System Design questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
Execution4 questions · ~50 min
Tell Me About a Time You Missed a DeadlineMedium
Recently asked

Explain why you missed a deadline, how you managed stakeholders, and what you changed to prevent a recurrence.

system designCodingExecutionAmazon Web Services
More Execution questions with a free account
4
Security & Infrastructure14 questions · ~174 min
Explain Setup and Hold TimingHard
Recently asked

Evaluates deep understanding of timing paths and hardware-level reasoning.

Amazon Web Services
Disk Full and Unix BasicsMedium
Recently asked

Assesses operational troubleshooting and Unix fundamentals relevant to AWS environments.

Amazon Web Services
More Security & Infrastructure questions with a free account
5
Behavioral & Leadership4 questions · ~50 min
More Behavioral & Leadership questions with a free account
6
More topics1 question · ~12 min
Parse Logs for Slowest ServiceMedium
Recently asked

Evaluates your data parsing and aggregation skills on log data.

log parsingData AnalysisAmazon Web Services
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Optimize Large SQL QueryHard
Practice
Recently asked
Practice drill

Optimize a billion-row AWS query by reducing scanned data, pre-aggregating requests, and preserving daily performance metrics.

Performance Tuningdatabase optimizationdata processingAmazon Web Services
Second and Nth Highest ValuesMedium
Practice
Recently asked
Practice drill

Find the second highest distinct salary and adapt the query to retrieve any requested salary rank.

Data Manipulationsqldatabase queryingSnowflake ComputingKKGISLSBS
Weekly Signup Cohort RetentionHard
Practice
Recently asked
Practice drill

Calculate weekly retention by signup cohort using CTEs, joins, date truncation, and distinct user counts.

Window FunctionsDate FunctionsAggregationsBrexPostmaneToro
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.