Cobalt 1: define the contract before building the model
Advanced analytics engineering · Choose model grain, validate source changes and reconcile metrics before writing an incremental loader.
Explore & practiseThe practice & career studioTurn what you know
Turn what you know
into work you can explain.
Investigate a mistake. Solve a small challenge. Build a case you can defend. Original resources that help you move from reading to doing.
Find your next activity ↓A useful place to begin
Choose a small win.
Advanced / Rehearse reliable AI releases ↗Advanced / Evaluate AI evidence and retrieval ↗Advanced / Reason about cause and effect ↗Advanced / Evaluate useful forecasts ↗Advanced / Build reliable analytics models ↗Advanced / Start the Meridian evaluation labs ↗15 min / Solve a SQL challenge ↗15 min / Diagnose a misleading total ↗45 min / Prepare an honest résumé ↗
Explore your companion library
Supporter offline project desk ↗Advanced analytics engineering
4 resources available. No sign-up required.
154 resources
Advanced analytics engineering
Contracts, replay-safe incremental models, historical joins and evidence-based model reviews.
Cobalt 2: make incremental changes replay safely
Advanced engineering lab · Handle late arrivals, stale updates, deletion tombstones and rollback without hiding source conflicts.
Explore & practiseCobalt 3: join history at the right point in time
Advanced warehouse modelling · Test interval boundaries, overlaps and missing dimension records before trusting historical attribution.
Explore & practiseCobalt 4: review a model change like an analytics engineer
Advanced portfolio and interview exercise · Turn tests, lineage and reconciliations into a defensible model-change review.
Explore & practiseResume guidance and examples are for learning and preparation only. They do not guarantee interviews, a job offer or employment.
These original companion activities are free. Advanced offline packs are separate supporter extras; companion activities do not change saved course progress.
Learner dashboard ↗ · Ask a question ↗