Playgrounds
Every playground is a self-contained session: a defined role, level and format, a question bank written for it, and a feedback report at the end.
16 playgrounds match your filters
A hands-on platform interview covering pipeline design, infrastructure as code and how you behave in the first minutes of an incident.
Design a multi-region delivery and rollback strategy, then defend the operational cost of your choices.
A friendly first-round call: fundamentals of pipelines, containers and Linux, plus how you learn on the job.
API design, testing strategy and performance debugging, grounded in code you have actually shipped.
Decompose a product requirement into services, data ownership and contracts, then defend the boundaries you drew.
Structured behavioural interview on technical leadership, disagreement, delivery pressure and mentoring.
Account structure, networking, workload identity and how you keep secrets out of your applications.
Design for zone failure with a five-minute recovery objective, then justify the bill you just created.
A full architecture conversation: framing requirements, integrating legacy systems and defending cost to non-technical stakeholders.
Architecture decision records, governance, and the human side of getting a design approved and adopted.
Model threats for a sensitive web application, then handle a live cloud credential-abuse alert end to end.
Fundamentals of secure defaults, common vulnerability classes and working with engineering teams rather than against them.
Warehouse modelling, data-quality contracts and a query-performance investigation on a very large table.
Design a near-real-time pipeline, argue when streaming is the wrong answer, and make silent failures impossible.
Ship a retrieval assistant responsibly: baseline first, measure honestly, and put real guardrails around tool use.
Design the platform layer: evaluation harnesses, prompt versioning, safety controls and cost governance at scale.