Principal Engineer, Core Infrastructure is open at Klaviyo in Boston. The posting gives no salary; similar roles in the United States advertise a median of $235K. Posted on Jan 8, 2026, and still on Klaviyo’s careers page when we last checked, on Nov 14, 2026.
About the role
Architect and evolve the Kubernetes platform, service mesh, networking, storage, and CI/CD pipelines; ship golden paths and IaC modules. - Define platform SLOs; use error budgets to guide reliability vs. velocity trade‑offs; drive incident learning and readiness reviews. - Improve developer velocity (build/deploy times, flaky tests, local dev ergonomics) with measurable results. - Lead capacity planning and…
The opening lines of the posting. The rest is on Klaviyo’s careers page.
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