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Top 50 json parsing Interview Questions

The most frequently asked json parsing questions across all roles and companies, ranked by real interview frequency. Updated daily.

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CodingStart here. 47 questions + 1 drill · ~864 min
Flatten Nested JSON to CSVHard
Practice

Flatten nested JSON objects into dot-notated CSV rows while preserving array positions and consistent columns.

json parsingData WranglingpythonQuest GlobalPaveAlten Calsoft Labs
Parse and Count Error CodesMedium
Practice
Recently asked

Extract error codes from log lines, count frequencies with a hash table, and return a sorted formatted summary.

json parsingStringsData StructuresAppleGoogle
Flatten Deeply Nested JSONMedium
Practice
Recently asked

Use recursive traversal to flatten nested JSON objects and arrays into path-based key-value pairs.

Recursionjson parsingData WranglingMcKinsey &
Flatten Nested DictionariesEasy
Practice
Recently asked

Flatten nested Patreon metadata into dot-separated keys using iterative depth-first traversal.

RecursionHash Tablesjson parsingPatreonZscaler
Parse and Clean Nested JSONHard
Practice

Recursively extract and normalize nested TetraScience assay measurements while preserving inherited experiment and sample context.

data cleaningjson parsingProgrammingTetraScienceBridgestone Americas
Ingest Nested JSON to DeltaHard
Practice
Recently asked

Recursively flatten nested JSON logs and group normalized records by a partition field for Delta ingestion.

Codingclean codedata persistenceDatabricks
Transform JSON Logs to TablesMedium
Practice
Recently asked

Recursively flatten nested JSON logs into consistently shaped tabular rows with deterministic columns.

json parsingData StructurespythonAmazon Web Services
Parse Ticket Inventory JSONEasy
Practice
Recently asked

Parse ticket inventory JSON and aggregate available seat counts by section.

Hash TablesaggregationArraysAxs
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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More topics3 questions · ~54 min
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
SQL and Python Data WorkMedium
Practice
Practice drill

Use a CTE, join, and conditional aggregation to summarize valid monthly user activity.

JoinsData ManipulationsqlAdobe
Clean Missing and Corrupted DataHard
Practice
Recently asked
Practice drill

Identify missing and corrupted measurement records across distributed sources using PostgreSQL joins and conditional validation.

missing valuesdatabase managementdata handlingAccenture
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