AWS, GCP, and Azure work fine. What's usually broken is what sits on top of them. We rebuild that part.
Managed services until the cost or constraint forces otherwise. The cloud bill is part of the architecture.
Everything in code, everything reviewable, everything rebuildable from scratch in an afternoon.
If a system is in production it has metrics, logs, traces, and a runbook before it has features.
A product is live but the pager is loud. We take the noise down without slowing the team.
Dev, staging, prod, and the customer-specific environments somebody promised. We design the platform that keeps them all sane.
A bill that doubled without an obvious reason. We model it, fix it, and leave a dashboard that keeps it honest.