Can I try Datakaru before committing?

Absolutely. We offer a 14-day free trial with no credit card required. That's enough time to create your first assignment, send it to a candidate, and see results.

Who is behind Datakaru?

Datakaru was built by Kristjan and Deniss — two hiring managers who spent years assessing data engineers and couldn't find a simple, affordable tool to do it well. We built it for ourselves first, and now it's here for you.

What's with the $2.50 per extra candidate?

As a bootstrapped company, we keep costs lean. If you regularly need more than 80 candidates per month, reach out to us and we'll work something out.

Which SQL dialects are supported?

Datakaru supports PostgreSQL, MySQL, and Microsoft SQL Server. We also support Python assessments.

How does the anti-cheating system work?

We use automated detection measures to protect assessment integrity. Candidates work in a secure, sandboxed IDE, and suspicious behavior can be flagged for review.

Is Datakaru a DB Recruiter alternative?

Yes. Datakaru can be used as a DB Recruiter alternative for SQL hiring assessments. Datakaru also supports Python assessments, Microsoft SQL Server, custom business-context assignments, and AI-assisted scoring.

Datakaru

Hire data engineers with real-world SQL & Python take-home tests.

Create custom SQL and Python take-home assignments that match your business context. AI scores submissions automatically so you can screen candidates faster — before the technical interview.

Start free trial See pricing

No credit card required · 14-day free trial

Datakaru SQL assessment IDE showing a timed coding challenge with syntax-highlighted query editor and results table

SQL take-home assignments for PostgreSQL, MySQL, SQL Server & Python

PostgreSQL

MySQL

SQL Server

Python

Generic data engineering tests don't work.

Pre-made question banks test memorization, not real competence. Datakaru gives you affordable SQL assignments that reveal real hiring signal.

Generic test libraries

Same recycled questions every candidate has seen
No connection to your actual business data
Expensive platforms with features you'll never use
Candidates game the system with memorized answers
Manual scoring eats up your technical team's time

Datakaru custom assignments

Assignments tailored to your real business context
Multiple SQL dialects and Python in one platform
Transparent, affordable pricing — no bloat
AI scoring to screen candidates before interviews
Real work-sample assessments that reveal true skill

Everything you need to assess technical talent.

A focused toolset for hiring managers who want real signal — not feature bloat.

Create SQL take-home assignments

Build realistic SQL tasks with your own tables, business context, and expected answers.

AI-powered scoring

Let AI automatically score candidate submissions to save hours of manual review. Screen candidates faster before technical interviews — manual scoring is always available too.

Multi-dialect SQL + Python

Choose between Postgres, MySQL, and Microsoft SQL Server. Need Python assessments? We support that too.

Time-limited tests

Set deadlines for each assignment to simulate real-world performance pressure and ensure consistency.

Anti-cheating measures

Built-in detection to protect the integrity of every assessment and give you reliable results.

Secure online IDE

Candidates work in a professional IDE built on the same technology as VS Code — no local setup needed.

Transparent pricing

No hidden costs, no bloated feature bundles. Simple plans that scale with your hiring volume.

Simple, no-frills process.

From task creation to candidate scoring in five straightforward steps.

Step 1

Create a task

Pick the SQL dialect, create tables, and write instructions. Python tasks are supported too.

Step 2

Combine tasks into an assignment

Group tasks together and set the overall time limit for the assignment.

Step 3

Send to the candidate

Share the assignment link. Candidates can start at a time that works for them.

Step 4

Receive results

Candidates solve challenges within your time limits using a secure online IDE.

Step 5

Review and score

AI automatically scores submissions so you can screen candidates at a glance. Review solutions in the IDE and adjust scores manually whenever you need to.

Built for trust and integrity.

Every assessment is secure, timed, and designed to give you reliable signal.

Anti-cheating detection

Automated safeguards protect assessment integrity so you can trust the results.

Timed assessments

Every assignment has a countdown timer that ensures fair, consistent conditions for all candidates.

Secure online IDE

Candidates write and run code in a sandboxed environment — no external tools, no shortcuts.

Realistic testing environment

Work-sample tasks mirror the actual job, so you see how candidates perform in context.

"We created Datakaru to help companies like us who are not satisfied with pre-made test libraries. We didn't want to pay huge sums for functionality that should cost no more than a couple of coffees."