01 · 20 QUESTIONS · 10 MINUTES
SQL
Checks whether candidates can write the queries the job needs, not just read them.
- Queries & filtering
- Joins & relationships
- Working with databases
Hire your next Data Engineer with clearer evidence.
A ready-made selection of tests for Data Engineer candidates. See how they approach the skills that matter, then focus your interviews on the results.
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AM
Alex Morgan
CompletedData Engineer assessment
A CLEARER VIEW OF THEIR SKILLS
More than one score.
SQL82%
Python74%
PostgreSQL68%
Docker64%
Problem Solving78%
Linux70%
Compare strengths. Explore the detail. Ask better questions.
Illustrative results · Fictional candidate
WHAT THE ASSESSMENT EXPLORES
A clearer view of data and analytical skills.
The Data Engineer template combines SQL, Python, PostgreSQL, Docker, Problem Solving, Linux. Review the selection against the work your vacancy involves.
6tests60minutes91questions in total
02 · 18 QUESTIONS · 10 MINUTES
Python
Checks Python knowledge for building applications, scripts and data work.
- Language fundamentals
- Data structures
- Functions & objects
03 · 15 QUESTIONS · 10 MINUTES
PostgreSQL
Checks PostgreSQL knowledge for querying, indexing and maintaining a database.
- Queries & joins
- Database structure
- Working with data
04 · 15 QUESTIONS · 10 MINUTES
Docker
Checks knowledge of containers, images and how they are built and run.
- Images & containers
- Container configuration
- Deployment concepts
05 · 8 QUESTIONS · 10 MINUTES
Problem Solving
Shows how candidates break down a workplace problem and choose between options.
- Understanding problems
- Considering solutions
- Choosing a response
06 · 15 QUESTIONS · 10 MINUTES
Linux
Checks the command line and system knowledge needed to run Linux servers.
- Commands & files
- System administration
- Permissions & processes
A COMPLETE SKILLS PICTURE
One assessment. Different strengths.
Explore data accuracy, analysis and clear conclusions.
You receive a result for each included test: SQL, Python, PostgreSQL, Docker, Problem Solving, Linux. Compare the relevant areas separately and use a follow-up task based on checking a data query and validating the output.
Keep the recommended selection or adjust it before inviting candidates.
A MULTILINGUAL TEST SUITE
English, plus 13 languages.
Assess candidates in the language they work in.
- English
- Chinese (simplified)
- Japanese
- Korean
- Thai
- Vietnamese
- Indonesian
- French
- German
- Spanish
- Portuguese
- Italian
- Dutch
- Arabic
Languages across our wider suite. Availability varies by test and level; check each test when preparing your assessment.
TRY AN EXAMPLE QUESTION
Try an example question.
Explore an example in the context of checking a data query and validating the output. It gives you a way to discuss the reasoning behind a candidate’s answer, alongside the Data Engineer assessment results.
Data Engineer: checking a data query and validating the outputWorkplace example
In this Data Engineer example, checking a data query and validating the output is part of the work. A report must use one consistent date range for every comparison. One source covers a different date range from the other sources.
A PRACTICAL GUIDE
Using the Data Engineer assessment.
What does the full assessment tell you?
This template combines multiple-choice questions in SQL, Python, PostgreSQL, Docker, Linux; workplace situations in Problem Solving. It brings together evidence about data accuracy, analysis and clear conclusions, giving you areas to explore when checking a data query and validating the output.
How can you use the results?
Review each result against your vacancy’s responsibilities. Use a short task based on checking a data query and validating the output to explore practical application. Ask them to explain filtering and joins, check edge cases and verify the output against the brief.
Which results matter for your vacancy?
- SQLAsk how they would filter records, join related tables and verify a query result.
- PythonExplore data structures and functions, then ask them to explain and test a short solution.
- PostgreSQLExplore queries, relationships and the checks needed to validate a database result.
- DockerExplore the relationship between images, containers, configuration and persistent data.
- Problem SolvingAsk them to break down a problem, compare options and explain their next step.
- LinuxDiscuss permissions, processes and the checks they would use to diagnose a service issue.
SEE THE RESULTS FOR YOURSELF
See the person behind the score.
Explore a complete sample report, from test results and candidate comparisons to focused interview questions.
BEFORE YOU START
Your questions, answered.
Can I tailor this assessment to my Data Engineer vacancy?
Yes. Start with SQL, Python, PostgreSQL, Docker, Problem Solving, Linux, then keep the tests that match your responsibilities. For example, use SQL to explore queries & filtering. You can add or remove tests before inviting candidates.
Does this assess practical Data Engineer work?
Candidates answer multiple-choice questions in SQL, Python, PostgreSQL, Docker, Linux; workplace situations in Problem Solving online. They do not complete your day-to-day work inside your own systems. Add a short work sample based on checking a data query and validating the output to explore application alongside the test results.
Why is SQL included?
Checks whether candidates can write the queries the job needs, not just read them. Ask how they would filter records, join related tables and verify a query result. Review whether this area reflects the responsibilities of your vacancy before retaining it.
How long does this Data Engineer assessment take?
The recommended selection contains 6 tests and allows 60 minutes across its timed tests. Adding or removing tests, or adjusting time allowances, can change the total.
Will I see a separate result for each test?
Yes. Review SQL, Python, PostgreSQL, Docker, Problem Solving, Linux separately so a strength in one area does not hide a gap in another. Use the detail to focus interviews and relevant work samples. View the sample report.
Can I try this assessment with real candidates for free?
After signup, your Data Engineer selection is prepared for review. Adjust it, invite candidates and see your first 5 candidate results free. No credit card is required. See pricing for further results.
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