Principal Software Engineer, Enterprise Scalability at Klaviyo · LumiJobs

Qualification

ExperienceTechnical expertiseAI tools & automationCross‐org influenceAI fluencyScale scorecardHigh‐impact winsAI‐assisted scale engineeringSuccess in 6–12 MonthsCompany‐wide scale scorecard in placeMassachusetts Applicants

Required

Experience: 12+ years scaling multi‐tenant SaaS with a reputation for removing major bottlenecks and proving impact with data.
Technical expertise: Performance engineering, capacity planning, sharding/partitioning, caching/back‐pressure, multi‐region readiness, and high‐volume migrations; you turn hotspots into robust patterns.
AI tools & automation: You apply AI to scale work—profiling assistance, workload modeling, synthetic traffic generation, anomaly detection, and runbook copilots—always with explicit guardrails and observability.
Cross‐org influence: You align teams through fitness functions, scorecards, and readiness gates that accelerate—not block—delivery; you communicate tradeoffs crisply to execs and engineers.
AI fluency: Curious, adaptable, and proactive in exploring AI that responsibly improves scale outcomes.

Preferred

Scale scorecard: Company‐wide fitness functions (latency/throughput/error rates) are adopted and reviewed regularly.
High‐impact wins: 2–3 bottlenecks removed with documented, reproducible testbeds; pXX latencies and error rates improve on top enterprise workloads; repeat P0s trend down.
AI‐assisted scale engineering: AI‐driven anomaly detection reduces alert noise while improving signal; generative load testing and copilot runbooks are used in release/readiness checks for the top critical services; time‐to‐isolate regressions drops 20–30%.
Success in 6–12 Months
Company‐wide scale scorecard in place; 2–3 high‐impact bottlenecks removed; top enterprise workloads show improved pXX latencies and error rates; fewer repeat P0s.
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Massachusetts Applicants:

Principal Software Engineer, Enterprise Scalability

Responsibilities

Qualification

Required

Preferred

Benefits

Company

Klaviyo

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