GCP Data Engineer Prep 2026

The Professional Data Engineer exam asks you to think like the person who owns the pipeline — which sink, which windowing, which BigQuery layout, and why. Certisimo trains exactly that judgment, one exam-style question at a time. WHAT'S INSIDE • 200 exam-style questions across 4 practice sets, written for the Google Cloud Professional Data Engineer exam • Covers what the exam covers: BigQuery, Dataflow, Pub/Sub, Dataproc, Bigtable, Cloud Composer and more TRAIN, THEN TEST Training mode gives you instant feedback as you answer. Test mode runs like the real thing: a countdown clock, no hints, a score at the end, and a review of everything you skipped or missed. STOP GUESSING WHETHER YOU ARE READY Your readiness score is computed from your own answers, so you always know how close you are — and what to do next. EVERYTHING IN YOUR POCKET • Save the questions that matter and annotate them with notes • Search the entire bank instantly • A complete history of every session you have run • 100% offline, iPhone and iPad, light and dark — and no sign-up, ever ALREADY BOUGHT THIS APP? Premium is yours — free, forever. It unlocks by itself the first time you open this update: nothing to buy, nothing to restore, no account to create. Your saved questions, your notes and your full history are all still here. GO FURTHER WITH PREMIUM Certisimo Premium unlocks the full explanation behind every answer — why the right choice wins, not just which letter it was — plus unlimited exam simulations, the complete Insights breakdown (weak, hard, new and strong questions) and an ad-free experience. • Weekly $5.99 · Yearly $34.99 with a 14-day free trial · Lifetime $79.99 one-time purchase Download Certisimo and walk into the Data Engineer exam already knowing how it feels. Certisimo is an independent study aid and is not affiliated with, endorsed by, or sponsored by Google LLC. Weekly and Yearly Premium are auto-renewable subscriptions; Lifetime is a one-time purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account, and you can manage or cancel your subscription in your App Store account settings at any time. Terms of Use: https://certisimo-app.web.app/terms Privacy Policy: https://certisimo-app.web.app/privacy