Google New Grad R1: Nested Dictionary JSON Serializer and BQ

Role: Software Engineer, New Grad
Result: Not disclosed
Report time: December 2025
Application: Applied online

Coding: JSON serializer

Given a dictionary, return its JSON-serialized string.

Dictionary keys are strings. Values may be strings, lists, or nested dictionaries. The source used an example equivalent to {"a":"b", "c":"d"} and expected the same structure as a JSON string.

The report did not define escaping rules or behavior for numbers, booleans, null values, or invalid input.

Practice: Serialize a Nested Dictionary to JSON

Behavioral interview

Questions included:

• The candidate's favorite project
• Working with people from different backgrounds
• Responding when someone takes disproportionate credit
• The three qualities they value most in a company