DataDriven
Practice real data engineering interviews, for free.
What it does
DataDriven.io is the free web platform for data engineering interview prep. Your day job does not prepare you for what they actually ask in the interview, so we simulate all four rounds: live SQL against a real database, Python with live execution, data modeling, and pipeline architecture. AI mock interviews run clarifying questions, coding, follow-up discussion, and a hire/no-hire verdict. Real company-specific questions with adaptive difficulty adjust to your skill level.
Does a similar job
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Hi HN, We're Luke and Phillip, and we're building Spice.ai OSS - a lightweight, portable runtime, built in Rust and powered by Apache DataFusion to locally materialize, accelerate, and query data tables sourced from any database, data warehouse or data lake. Phillip and I first introduced Spice on Show HN in September 2021. Since then, we’ve been schooled and humbled in every way building 100TB+ data and ML systems for the https://spice.ai cloud platform. Along with our customers, we struggled with getting fast, low-latency, high-concurrency SQL query within a budget, accessing and…
DataEngPrep.techMar 2026 · dataengprep.tech1863 data engineering interview questions with expert answer
More life & fun this month
the category →- TL
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Photosynthesis fires two of your iPhone
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Your multimedia mentor that takes you from mid to great
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Launched alongside, April 2026
the whole month →
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Thought the resources for GPU arch were lacking, so here we are
Life & fun · Apr 2026 · jaso1024.com
- IB
Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.
AI · Apr 2026 · github.com
- BC
Life & fun · Apr 2026 · sam-burns.com
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With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.
AI · Apr 2026 · text.blogosphere.app