Klaviyo · 8 hours ago
Principal Engineer, Enterprise Scalability
United States
Full-time
Remote
Lead/Staff
$248K/yr - $372K/yr
12+ years expKlaviyo is a company that empowers creators to own their destiny by making first-party data accessible and actionable. They are seeking a Principal Engineer for Enterprise Scalability who will lead performance, reliability, and large-tenant readiness while driving platform-wide architectural changes and optimizing systems.
AdvertisingAnalyticsE-CommerceMarketing AutomationSoftware
Responsibilities
Define enterprise scalability fitness functions (latency/throughput/error rates) and a scorecard; align teams to SLOs and budgets
Design/implement sharding and partitioning strategies, caching/back‑pressure, multi‑region readiness, and high‑volume migration paths
Build lightweight enablement: benchmarks, profiling harnesses, reproducible testbeds; pair with teams to land fixes
Lead scalability reviews and readiness gates that accelerate—not block—delivery; drive incident deep dives tied to systemic fixes
Communicate clearly to execs and engineers, tying technical work to business impact and customer outcomes
Integrate AI into scale and resiliency work—from proactive anomaly detection to synthetic load and guided runbooks—so performance improvements stick and incidents don’t repeat
Qualification
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%
Benefits
Participation in the company’s annual cash bonus plan
Variable compensation (OTE) for sales and customer success roles
Equity
Sign-on payments
A comprehensive range of health, welfare, and wellbeing benefits based on eligibility
Company
Klaviyo
Klaviyo is an automation and email platform designed to help grow businesses.
1001-5000 employees
H1B Sponsorship
Klaviyo has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (47)
2024 (29)
2023 (24)
2022 (27)
2021 (21)
2020 (8)
Funding
Current Stage
Public CompanyTotal Funding
$1.35BKey Investors
ShopifySands Capital VenturesAccel
2025-08-13Post Ipo Secondary· $195.06M
2025-05-14Post Ipo Secondary· $372.95M
2023-09-20IPO
Leadership Team
Andrew Bialecki
CEO
Ed Hallen
Co-Founder, Chief Strategy Officer, Board Member
Recent News
Investing.com
2026-01-03
2025-12-17
Company data provided by crunchbase