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Platform engineers build the internal infrastructure other teams ship on: compute platforms, CI/CD, service meshes, observability, and the paved roads that make the org faster. Interviews weight distributed-systems fundamentals, infrastructure primitives, and operational judgment over product coding. This path sequences the infra-heavy question categories, reliability-minded coding, and the system-design primitives a platform loop drills into.
Platform loops go deep on the substrate: operating systems, networking, containers/orchestration, and IaC. This is the knowledge base the design and debugging rounds build on.
Platform coding screens favor solid fundamentals and stateful data-structure design (rate limiters, caches, schedulers) over exotic algorithms.
Platform engineers are expected to design and reason about the building blocks themselves - load balancers, DNS, API gateways, queues, caches, storage, and the observability plane that watches them all.
Platform teams own reliability for everyone else, so loops probe incident ownership, blameless retro instincts, and acting under ambiguity.
Container orchestration, infrastructure as code, and the distributed-systems patterns that platform teams are expected to have opinions about.
The two Kubernetes certifications map closely to platform-engineering interview ground, and Terraform Associate covers the IaC half.
21 role-targeted paths are live, from new-grad and backend through SRE, security, data and engineering management. If you have a role you want covered, let us know.
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