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Calsoft Software Engineer Interview Questions

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

50questions
~9htotal time
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1
CodingStart here. 30 questions + 1 drill · ~327 min
Reverse String In PlaceEasy
Practice
Recently asked

Reverse a string using a two-pointer approach by converting it to a mutable character list in Python.

CodingStringsProgrammingCalsoft
Max Occurring CharacterEasy
Practice

Find the most frequent character with earliest-occurrence tie-breaking using a frequency map.

string manipulationCalsoft
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
Security & Infrastructure8 questions · ~85 min
DevOps Tools and UsageMedium

Evaluates DevOps tooling knowledge and practical application.

ToolsDevOpsCalsoft
OWASP and Web VulnerabilitiesHard

Evaluates secure application knowledge and mitigation understanding.

SecurityCalsoft
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3
Behavioral & Leadership8 questions · ~85 min
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4
More topics4 questions · ~42 min
Pandas DataFrame ManipulationMedium

Assesses data manipulation skills with pandas.

pandasData ManipulationCalsoft
DevOps and Big Data ToolsMedium

Evaluates familiarity with data processing tools used in enterprise pipelines.

hadoopCalsoft
System Design for a Desired SystemMedium

Evaluates your system design thinking and ability to structure a solution.

designCalsoft
SQL Basics, Normalization, and QueriesMedium

Evaluates SQL fundamentals and data modeling understanding.

javaCodingsqlCalsoft
Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 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
SQL Bookstore Schema PracticeEasy
Practice
Practice drill

Use a CTE, joins, and distinct aggregates to calculate Meta Logistics bookstore payment metrics.

sql queriessqlpythonMeta Logistics
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.