Principal Engineer, Core Infrastructure

Benefits

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Family-building benefits

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Salary

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401(k) match

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Weekend work

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Application

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About this role

Principal Engineer, Core Infrastructure Boston, MA At Klaviyo, we value the unique backgrounds, experiences and perspectives each Klaviyo (we call ourselves Klaviyos) brings to our workplace each and every day. We believe everyone deserves a fair shot at success and appreciate the experiences each person brings beyond the traditional job requirements. If you're a close but not exact match with the description, we hope you'll still consider applying. Want to learn more about life at Klaviyo? Visit klaviyo.com/careers to see how we empower creators to own their own destiny. As a hands‑on principal for compute, networking, storage, runtimes (e.g., Kubernetes), CI/CD, and observability, you'll architect the service platform that lets teams ship fast and safely. IC role-no direct reports-you lead via design, code, and incident excellence, setting technical standards and SLOs for platform services. What You'll Do - 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 commitments; build guardrails for cost, security, and compliance with Security/FinOps partners. - Write high‑impact code, automation, and tooling; mentor across teams and raise the bar on operational excellence - Embed AI in the developer experience-from code generation to observability and incident response-so teams ship faster and safer by default. Who You Are - Experience: 10+

Read the full description at www.klaviyo.com. FewerJobs shows a source-linked preview and links to the original posting.