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Updated weekly · Last refresh Aug 30

Launch Potato Software Engineer Interview Questions

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

18questions
~2htotal time
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1
CodingStart here. 4 questions + 2 drills · ~52 min
Data Structures and Memory ImpactMedium

Tests your ability to reason about memory costs and choose appropriate data structures.

memory managementCodingData StructuresLaunch Potato
Time Complexity of Implemented AlgorithmMedium

Tests your ability to analyze algorithm efficiency and reason about performance at scale.

Codingtime complexityLaunch Potato
LeetCode Hard SQLHard
Practice
Practice drill

Use PostgreSQL CTEs and lateral joins to find text positions containing every required keyword exactly once.

CodingKpitKaiser Permanente
SQL Coding Question CountMedium
Practice
Practice drill

Count 0 and 1 sensor readings by Bosch building using a CTE, LEFT JOIN, and conditional aggregation.

CodingpythonBosch Building Technologies
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2
Execution5 questions · ~41 min
Scaling a Web App for TrafficHard

Tests your ability to design for load, reliability, and performance as traffic grows.

performancescalabilityLaunch Potato
Scalable and Secure CodeMedium

Tests your engineering practices for scalability, security, and maintainability in production systems.

code qualityscalabilitySecurityLaunch Potato
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3
Behavioral & Leadership3 questions · ~24 min
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4
More topics6 questions · ~49 min
Design a REST API for E-CommerceHard

Tests your API design skills including resources, endpoints, and request/response modeling.

system designapi designLaunch Potato
Caching for Frequently Accessed DataHard

Tests your approach to caching design, invalidation, and performance tradeoffs for web services.

performance optimizationcachingLaunch Potato
Optimize a Slow Database QueryMedium

Tests your performance debugging skills using query plans, indexing, and schema considerations.

Performance Tuningdatabase managementquery optimizationLaunch Potato
SQL Joins and UsageMedium

Tests your SQL fundamentals and ability to choose correct joins for data accuracy.

database optimizationLaunch Potato
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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
SQL Queries for RankingMedium
Practice
Practice drill

Rank active HSBC employees by division and return every employee tied for the highest or second-highest salary.

javasqlHsbc
The finish line: interview-readyComplete all 18 questions plus 3 hands-on drills to finish this plan.