Hey PH I'm the solo developer of DataDriven.io Every time I interviewed for a data engineer role, I had to guess what mattered to that specific company. And I was wrong a lot. I'd cram random LeetCode problems and walk in unprepared for what they actually asked. The only way to figure out how to pass the interview was to fail a few first. That felt broken. So I built the thing I wish I'd had. DataDriven.io simulates the five rounds data engineers actually face, SQL, Spark, Python, data modeling, and pipeline architecture, with questions asked in real data engineering interviews at each seniority level. Real SQL execution, real Python sandbox, AI mock interviews that probe your architecture reasoning and give you a hire/no-hire verdict. It is completely free. No paywall, no trial, no credit card. I am not trying to monetize candidates who are already stressed about a job search, the goal is to get the offer. Two things I would love from this community: If you've interviewed for DE roles recently, what question blindsided you? I want to make sure I've got it covered? I'll be in the comments all day.

DataDriven

Practice real data engineering interviews, for free.

Practice real data engineering interviews, for free.