Hi Product Hunt! 👋 I'm Cedric, and I built *Shuffleet*, the gym for data engineers. Most data engineering practice happens in toy editors on made-up tables. Real interviews and real jobs look different. You write SQL against an actual engine, you reason about Spark, and you're judged on edge cases you didn't see coming. So in Shuffleet, you train on the real thing: 🏋️ *Real engines.* Your SQL runs on Trino and your PySpark runs on Spark, in an isolated sandbox. ✅ *Hidden test cases.* Submissions are graded like in an interview, not only on the sample. 🤖 *An AI coach.* It gives hints when you're stuck and reviews your solution once you pass. 📈 *Guided plans and skill tracking.* Follow a plan at your own pace and see where you're getting stronger. ⏱️ *Interview mode.* Timed sessions so you can rehearse under pressure. The core is free. *Pro* adds more coach help, PySpark, full history and premium problems and plans. It's built for people preparing for a data engineering interview, and for anyone who wants to keep their SQL and Spark skills in shape. I'd love your feedback: which problem should we add next, and what would make you come back every week? I'll be here all day answering. 🙌 👉 htts://shuffleet.com

Shuffleet

The gym for data engineers: train on real SQL & Spark

The gym for data engineers: train on real SQL & Spark