Dataford
Top 28
Prep plan
Updated weekly · Last refresh Nov 12

Esper Software Engineer Interview Questions

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

28questions
~5htotal time
Track your progressSign up free to work through all 28 questions and resume where you left off.
Start practicing free →
1
CodingStart here. 8 questions · ~80 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsEsper
More Coding questions with a free account
2
Security & Infrastructure4 questions · ~40 min
Secure System Design and Attack MitigationHard

Assesses your secure system design thinking and threat-aware decision making.

system designSecurityEsper
More Security & Infrastructure questions with a free account
3
Behavioral & Leadership9 questions · ~90 min
More Behavioral & Leadership questions with a free account
4
More topics7 questions · ~70 min
Design Real-Time Sensor Event PipelineHard

Design a real-time pipeline for sensor events that transforms data and feeds a UI with low latency.

Stream ProcessingOrchestrationDependenciesEsper
Design for Low Network ConditionsMedium

Evaluates your ability to design resilient client behavior under poor connectivity.

Esper
SQL and Data Engineering FundamentalsMedium

Tests your SQL proficiency and ability to reason about data system architecture.

data engineeringsqlEsper
REST vs GraphQLEasy

Tests API design knowledge and ability to reason about trade-offs for client-server communication.

Stakeholder ManagementCommunicationEsper
Scale to Millions of UsersHard

Tests system design skills for high-scale, reliable services supporting Esper’s device management platform.

Trade-offsRoadmappingRisk AssessmentEsper
Describe Prior System ArchitectureMedium

Tests ability to explain system structure, tradeoffs, and engineering decisions.

CommunicationOwnershipEsper
More 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
Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Unique Elements and Top-K FrequenciesMedium
Practice
Practice drill

Return the first row for each unique value, then rank the k most frequent values.

large datasetsData Structurescomplex queriesEverlaw
Filter Clean Events with SQLMedium
Practice
Practice drill

Filter invalid game events and normalize event names using PostgreSQL string and null handling.

missing valuesdata cleaningnull handlingQuantiumScopelyCarvana
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.