NPBlue has spent years writing the guides engineers search for. These are the tools built on top of that — practical, narrow, and aimed at the moments that actually matter in a career: the interview, the certification, the hire.
Available now & on the way
AI mock interviews for data & cloud roles
Practice realistic technical interviews with an AI coach that asks, listens, and tells you exactly where you fell short — across SQL, AWS, Python, data engineering, and behavioural tracks.
Explore Interview Coach Pro →Practice exams for AWS, GCP, Azure & Snowflake
Timed mock exams with domain-level scoring, spaced repetition on your weak areas, and every question linked back to the NPBlue guide that explains it.
Auto-graded take-homes for hiring teams
Send candidates a real Spark, SQL, or dbt exercise and get a scored report back — built for data roles that generic coding-screen tools handle badly.
They run on the same engine. Questions, grading, progress tracking, and usage metering are shared infrastructure — what changes between products is the question bank and who is paying. That's why a solo team can credibly ship all three, and why the second and third cost a fraction of what the first did.
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