Adastra Group QA Engineer Interview Questions

The questions to prepare for a Adastra Group QA Engineer interview. Questions from real interview reports rank first. Updated daily.

5questions

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JoinsStart here. 2 questions + 2 drills · ~36 min

Explain how JOIN combines columns across related tables while UNION stacks rows from compatible queries in analytics workflows.

SQL Joins and Set OperationsMedium

Evaluates your understanding of SQL join behavior and set operations for correct query results.

JoinssqlAAdastra Group

Use a PostgreSQL self join for reporting relationships and compare two binary trees by structure and node values.

Transform comma-separated employee tags, join employees to managers, and aggregate active direct reports by manager and tag.

string manipulation1 question · ~8 min

Assesses your practical knowledge of SQL string functions for data preparation and reporting.

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test planning1 question · ~8 min

SQL Test PlanningMedium

Assesses your ability to define a structured approach to validating software quality.

test planningAAdastra Group

sql query1 question · ~8 min

Duplicate Records QueryMedium

Tests SQL skills for data quality checks and deduplication logic.

sql querydata integrityAAdastra Group

Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min

Use LAG and LEAD to analyze Carvana vehicle detail page actions within completed web sessions.

The finish line: interview-readyComplete all 5 questions plus 3 hands-on drills to finish this plan.